2015年6月英语四级真题第2套 Part III Section C (1)
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2015年6月英语四级真题第2套 Part III Section C (1)

说明文 · 阅读理解(四选一) · 真题文章逐层精读

本页是 2015年6月英语四级真题第2套 Part III Section C (1) 文章的精读视角页——这篇说明文全文 340 词、4 段,CEFR 难度 C1(C1 级在英语四级文章中占 32%),作者立场为「客观中立」;英文原文之外,本篇已有的 11 项精读维度逐项展开,其中能迁移到其他英语四级真题文章的判断方法(篇章结构、修辞、言外之意、作者态度、体裁速判)随各维度一并讲透。

精读最佳实践

本页解析里的段号(P1)都可以点——点一下,原文在顶部翻开并定位到该段,解析引用的原文同步标亮;合上原文,你还停在刚才读到的位置。点 P1 试试。

PASSAGE · 文章原文

4 段英文原文

以下为2015年6月英语四级真题第2套 Part III Section C (1) 的阅读理解(四选一)原文,共 4 段。左侧 P1–P4 是段落编号——本页全部解析(结构、逐段、修辞、自检题)都以它为坐标回指原文,点击解析里的段号,原文即在顶部翻开并定位到该段、引用的原文同步标亮;合上原文仍停在当前阅读位置。原文保持卷面形态,不带翻译与标注。

If you think a high-factor sunscreen(防晒霜) keeps you safe from harmful rays, you may be wrong. Research in this week's Nature shows that while factor 50 reduces the number of melanomas(黑瘤) and delays their occurrence, it can't prevent them. Melanomas are the most aggressive skin cancers. You have a higher risk if you have red or blond hair, fair skin, blue or green eyes, or sunburn easily, or if a close relative has had one. Melanomas are more common if you have periodic intense exposure to the sun. Other skin cancers are increasingly likely with long-term exposure.

There is continuing debate as to how effective sunscreen is in reducing melanomas—the evidence is weaker than it is for preventing other types of skin cancer. A 2011 Australian study of 1,621 people found that people randomly selected to apply sunscreen daily had half the rate of melanomas of people who used cream as needed. A second study, comparing 1,167 people with melanomas to 1,101 who didn't have the cancer, found that using sunscreen routinely, alongside other protection such as hats, long sleeves or staying in the shade, did give some protection. This study said other forms of sun protection—not sunscreen—seemed most beneficial. The study relied on people remembering what they had done over each decade of their lives, so it's not entirely reliable. But it seems reasonable to think sunscreen gives people a false sense of security in the sun.

Many people also don't use sunscreen properly—applying insufficient amounts, failing to reapply after a couple of hours and staying in the sun too long. It is sunburn that is most worrying—recent research shows five episodes of sunburn in the teenage years increase the risk of all skin cancers.

The good news is that a combination of sunscreen and covering up can reduce melanoma rates, as shown by Australian figures from their slip-slop-slap campaign. So if there is a heat wave this summer, it would be best for us, too, to slip on a shirt, slop on(补上) sunscreen and slap on a hat.

PARAGRAPHS · 逐段精读

4 段逐段主旨与解读

逐段拆解2015年6月英语四级真题第2套 的这篇原文——每段给出英文段落主旨、段落标题与中文解读,并提炼一条「这段为什么这样读」的具体方法。

  1. P1

    The Limits of High-Factor Sunscreen

    High-factor sunscreen cannot fully prevent melanoma, whose risk is shaped by personal factors and sun exposure.

    本段承担全文的problem-raising功能:它先挑战“high-factor sunscreen equals complete safety”的直觉,并用research和risk factors建立问题的严重性。这样一来,后文讨论sunscreen effectiveness、misuse和combined protection就有了明确的逻辑起点。

    抓转折和限制词
  2. P2

    Limited Evidence and False Security

    Sunscreen provides limited protection against melanoma and may create false security, while other protective measures are often more effective.

    本段是全文的evidence-development部分,它通过研究数据避免文章沦为主观劝告,同时又通过研究局限和段末判断说明不能迷信sunscreen。它有力支撑了文章主旨中“防晒霜可能带来虚假安全感”和“需要其他措施”的两层内容。

    统摄多项研究证据
  3. P3

    Improper Use and the Danger of Sunburn

    Improper sunscreen use and repeated sunburn greatly increase the risk of skin cancer.

    本段补充说明了防晒霜不能完全保护人的现实原因,即使用者往往misuse它,并因此暴露于sunburn风险。它将第二段的false sense of security具体化,也为末段提出正确且综合的防晒行动创造了必要性。

    串联误用与晒伤后果
  4. P4

    Combined Protection Against Melanoma

    A combination of sunscreen, protective clothing, and hats can effectively reduce melanoma risk.

    本段完成全文的solution-response功能,直接回应首段提出的“高倍防晒霜无法完全预防”这一问题。它把前文关于limited protection、false security和improper use的警示,最终落实为可执行的combined protection建议,从而完整闭合文章逻辑。

    从口号提炼综合方案
SELF CHECK · 段落自检题

4 道逐段细节自检题

针对2015年6月英语四级真题第2套这篇原文,每段配 1 道细节题( 1 个正确项 + 5 个干扰项 ,由懒笔记精读引擎基于本段命制,非试卷原题)。 选项默认中性;点「显示答案与解析」展开正确项、解析与最快解法,现代浏览器会同步高亮正确选项。

  1. 第 1 段 定位词 factor 50 sunscreen research

    What does the research indicate about factor 50 sunscreen?

    • A It completely prevents melanomas in people with fair skin.
    • B It is ineffective in reducing the number of melanomas.
    • C It reduces melanoma cases and delays their occurrence but cannot prevent them completely.
    • D It mainly protects people from other skin cancers caused by long-term exposure.
    • E It delays melanoma occurrence only in people with blue or green eyes.
    • F It works only when exposure to the sun is periodic and intense.
    显示答案与解析 收起答案与解析

    正确答案:C

    正确项完整保留了研究结论的两个有效作用,即 reduces 和 delays,同时保留 can't prevent 所限定的边界。它没有把 high-factor sunscreen 描述成无效,也没有把相对效果升级为 complete prevention。命题障碍在于把三个动作拆开考:考生若只记住 factor 50 很强,容易被含 completely 或 eliminate 的绝对表述误导。

    三动词验边界 时间紧张时,直接用题干中的 factor 50 锁定 第1段,不必从段首顺读。随后采用“动词三色法”:在定位句中只圈出表示结果的 reduce、delay 和表示边界的 prevent,再检查正确项是否同时覆盖前两类积极效果并保留否定边界。这个方法比逐项翻译更快,因为它只核验科学结论的动作与程度。

  2. 第 2 段 定位词 second study reliability

    What weakened the reliability of the second study?

    • A It included too few people with melanomas.
    • B It failed to compare sunscreen users with people who did not have cancer.
    • C It examined only the effects of hats and long sleeves.
    • D It depended on participants recalling their sun-protection behavior over many decades.
    • E It randomly assigned participants to use sunscreen every day.
    • F It proved that sunscreen gave people a false sense of security.
    显示答案与解析 收起答案与解析

    正确答案:D

    正确项准确复现了研究的资料来源缺陷:participants 需要 remembering what they had done over each decade of their lives。长期回忆容易产生 recall bias,因此作者才认为研究 not entirely reliable。障碍在于选项没有机械复述所有原词,而是将 people remembering 和 over each decade 概括为 recalling behavior over many decades,属于四级常见的同义改写。

    判词逆推缺陷 可先以 second study 定到 第2段,再跳过该研究的结论句,直接扫描其后所有带负面评价的词,如 not entirely reliable。接着只问一个问题:这个评价前面的 so 指向哪种 data collection 方式?正确项应当复述该方式,而不是复述研究发现或样本数字。这种“先找作者判词,再逆推原因”的逆向阅读,效率高于从研究开头逐句精读。

  3. 第 3 段 定位词 sunburn teenage years

    What does recent research suggest about sunburn during the teenage years?

    • A A single episode of sunburn guarantees the development of melanoma.
    • B Repeated sunburn affects only people with red or blond hair.
    • C Sunburn is less dangerous than long-term exposure to the sun.
    • D Reapplying sunscreen after two hours eliminates the risk caused by sunburn.
    • E Five episodes of sunburn can increase the risk of all types of skin cancer.
    • F Teenagers are unlikely to develop any form of skin cancer after sunburn.
    显示答案与解析 收起答案与解析

    正确答案:E

    正确项保留了 three 个不可缺少的事实锚点:five episodes、increase the risk 和 all skin cancers。它把原文的 teenage years 所限定的背景融入题干,因此选项集中呈现研究结果。命题障碍在于 increase the risk 并不等于 cause cancer,也不等于只与 melanoma 有关;考生必须识别医学表述的概率性和范围性。

    三锚点筛选 紧张时,先用 teenage years 锁到 第3段,因为它比 sunburn 更具区分度;随后不翻译整句,只画出“数字-箭头-范围”:five、increase、all skin cancers。正确项必须同时保住这三个锚点。任何选项只要改动一个锚点,例如 single、guarantees 或 only melanoma,即可快速淘汰。

  4. 第 4 段 定位词 heat wave protective approach

    What is the best protective approach during a summer heat wave?

    • A Apply a high-factor sunscreen and stay outdoors as long as possible.
    • B Rely on a hat alone because it offers the greatest benefit.
    • C Use sunscreen only after experiencing sunburn.
    • D Avoid sunscreen and depend entirely on staying in the shade.
    • E Wait until melanoma rates rise before taking protective measures.
    • F Use sunscreen together with protective clothing and a hat.
    显示答案与解析 收起答案与解析

    正确答案:F

    正确项抓住 combination 的核心逻辑:sunscreen 必须与 covering up 配合,而 shirt 和 hat 是后文给出的具体做法。它与 Australian campaign 的 slip、slop、slap 三步形成对应。设置障碍在于选项不机械照抄口号,而是把 shirt 和 hat 概括为 protective clothing and a hat,考查考生识别“概括与例证”的关系。

    口号还原组合 直接用 heat wave 跳至 第4段,优先读 So if 之后的祈使动词,不必回读全文。然后使用“口号还原法”:把连续的动作短语还原为三类行为,衣物遮挡、sunscreen、hat,再看正确项是否涵盖这一组合。这样可在数秒内排除所有只给单一措施或反向建议的选项。

STRUCTURE · 篇章结构

4 个意群的说明文骨架

按说明文 的行文骨架切分意群,每个意群标注它覆盖的段落与对主旨的作用——逐段读完后回到这里俯瞰全篇,能看清作者为什么按这个顺序行文。

  1. 防晒霜的局限性与黑色素瘤风险

    这个 opening paragraph 通过 misconception 引入了 central issue,指出 high-factor sunscreen 虽然能 reduce melanomas 的 number 和 delay 它们的 occurrence,但 cannot prevent them completely。接着介绍了 melanomas 是最 aggressive 的 skin cancers,并列举了 risk factors 包括 hair color、skin type、eye color 以及 sun exposure patterns,为后文的 discussion 奠定 medical background。

    作为 expository article 的 introduction,这个 paragraph 使用了 myth-busting approach 来 engage readers,directly challenges 人们对 sunscreen effectiveness 的 common belief,为整篇文章的 argumentative line 建立起 foundation,让读者意识到需要 rethink 他们的 sun protection strategy。

    揭示防晒霜不能完全预防黑色素瘤
  2. 防晒霜有效性的研究证据与争议

    这个 evidence paragraph 深入探讨了 ongoing debate 关于 sunscreen effectiveness。通过 presenting 两个 Australian studies 的 contradictory findings,展示了 research complexity:第一个 study 显示 daily sunscreen use 能 halve melanoma rates,第二个 study 则 suggests 其他 protection forms 比 sunscreen 更 beneficial。最后提出 critical point,即 sunscreen 可能给人们 false sense of security,这个 conclusion 直接 echoes 文章的 main thesis。

    作为 expository text 的 evidence section,这个 paragraph 通过 cite specific research 来 support 开篇的 claim。它运用了 compare-and-contrast structure 来 present 不同的 study results,增强了 argument 的 credibility,同时 acknowledges research limitations(memory-based data),体现了 balanced analysis。最终引出 false security 这个 key concept,为下一段关于 improper use 的 discussion 做 logical transition。

    证明防晒霜效果存在争议且可能产生误导
  3. 防晒霜使用不当的实际问题

    这个 problem-focused paragraph 从 theoretical debate 转向 practical issues。它 identifies 三个 specific misuse patterns:applying insufficient amounts、failing to reapply、和 staying too long in sun。然后 highlights 一个 alarming finding,即 teenage sunburn episodes 显著 increase 所有 skin cancers 的 risk。这段 bridges 前面的 research discussion 和后面的 solution recommendations,揭示了 implementation gap between knowing and doing。

    在 expository structure 中,这个 paragraph 扮演 problem elaboration 的 role。它从 why sunscreen fails in theory(前段)过渡到 why it fails in practice(本段),通过 enumerate specific behavioral problems 使 abstract concern 变得 concrete and relatable。Special emphasis 放在 teenage sunburn 这个 critical risk factor 上,为最后一段的 comprehensive protection strategy 提供 strong justification,strengthen 整体 argument 的 persuasiveness。

    说明防晒霜常被误用且晒伤危害严重
  4. 综合防护策略与行动建议

    这个 concluding paragraph 提供了 positive resolution。它 cites Australian campaign 的 success 作为 evidence,证明 combination approach(sunscreen plus covering up)能 effectively reduce melanoma rates。然后用 practical recommendation 结尾,采用 memorable 'slip-slop-slap' formula 来 encourage readers to adopt comprehensive protection。The optimistic tone('good news')和 actionable advice 为整篇 expository article 画上 constructive ending。

    作为 expository writing 的 conclusion,这段完成了 critical synthesizing function。它不仅 resolves 前面 paragraphs 建立起的 tension(sunscreen limitations 和 usage problems),还通过 successful case study(Australian campaign)提供 concrete proof that combined approach works。Final recommendation 用 conditional structure('if there is a heat wave')让 advice 显得 timely and relevant,而 tripartite formula 则 makes 整个 message memorable and actionable,完美 echoes 文章 thesis about combining measures。

    提出防晒霜需配合其他措施的解决方案
MAIN IDEA · 速判主旨

5 步定位这篇文章的主旨

不读完全篇也能锁定主旨——以下 5 步按2015年6月英语四级真题第2套 这篇原文的实际行文顺序给出,每步说明看哪里、看出什么,可直接迁移到其他英语四级文章。

  1. 首尾句对比 P1

    说明文的 first paragraph 通常会 introduce the main topic,而 opening sentence 往往直接点出 subject matter,比如这里的 high-factor sunscreen 和 harmful rays。Last sentence 常常会 reveal 作者的 initial stance 或 hint at complexity,像这里的 'it can't prevent them' 就暗示了 limitation

  2. 证据冲突呈现 P2

    说明文依赖 factual evidence 来 support claims。这篇文章的 second paragraph 用 Australian studies 和 conflicting findings 来说明 effectiveness 的 uncertainty。当 multiple studies 被引用且 show mixed results 时,main idea 往往是关于 complexity 或 need for caution 而非 simple conclusion

  3. 使用误区列举 P3

    Third paragraph 详细说明 people's improper use('don't use sunscreen properly'、'applying insufficient amounts'、'failing to reapply')。这种 elaboration on problems 强化了 main idea 中关于 sunscreen alone 不够的观点,因为 implementation gap 是 key factor

  4. 综合方案推荐 P4

    Final paragraph 用 'good news' 引入 solution:'combination of sunscreen and covering up',并用 Australian campaign 作为 proof。Specific recommendations('slip on shirt'、'slop on sunscreen'、'slap on hat')体现了 multi-measure approach,directly 对应 main idea 中的 'combining sunscreen with other measures'

  5. 局限加综合 P1 P2 P3 P4

    Main idea 是各段 key points 的 synthesis:P1 说 sunscreen 'can't prevent',P2 说 evidence 'weaker' 且给 'false security',P3 说 misuse 问题,P4 提出 'combination' solution。这些 collectively point to:单一措施 insufficient,需要 integrated protection

主旨信号词 can't prevent P1 false sense of security P2 don't use properly P3 combination P4 weaker P2 alongside P2

MAIN IDEA · 主旨

这篇文章在说什么

高倍数防晒霜本身无法完全预防黑色素瘤,尽管能减少其发生。有效的防晒需要将防晒霜与防护服和遮阳等其他措施结合使用,因为防晒霜可能产生虚假安全感且常被不当使用。
High-factor sunscreen alone cannot fully prevent melanomas, despite reducing their occurrence. Effective sun protection requires combining sunscreen with other measures like protective clothing and shade, as sunscreen may create false security and is often misapplied.
WORD INFERENCE · 生词推断

4 个生词的上下文推断

不查词典,只用文中线索推出词义——每个词给出推断出的释义与 完整推理链。已收录进英语四级高频真题词集的单词可点击进入词条页。

  • aggressive 恶性的;侵袭性强的;危险程度高的

    现在让我们把三条线索串联起来。首先,most 这个最高级告诉我们 melanomas 在所有 skin cancers 中具有某种极端特性。其次,通过与 other skin cancers 的对比,我们发现 melanomas 只需 periodic intense exposure 就能发生,而不需要 long-term exposure,说明它更容易被触发,更危险。最后,从 aggressive 的构词法来看,ag-gress 这个 go forward 的词根,在医学 context 中暗示一种难以控制、快速发展的特性。将这三条线索整合:最高级 + 更易触发 + 主动进攻的词根,我们可以推断 aggressive 在这里描述的是 melanomas 的高度危险性、恶性程度或快速发展的特性。

    句法-对比-构词三层推断法
  • intense 强烈的;剧烈的;高强度的

    让我们整合三条线索。第一,通过与 long-term 的对比,我们知道 intense 描述的不是时间维度,而是强度维度。第二,从词源角度,in-tendere 的 stretched to limit 概念支持这是一个描述程度或强度的词。第三,第3段 中的 sunburn 作为 intense exposure 的具体 manifestation,证实了 intense exposure 意味着超出正常承受范围的强烈 exposure。三条线索共同指向:intense 描述的是 sun exposure 的强度、剧烈程度或浓度,是一个表示程度极高的形容词。

    对比定位-词源验证-实例确认法
  • routinely 常规地;例行地;有规律地

    整合三条线索:首先,routinely 与 daily 在类似 context 中并行使用,暗示它们描述相似的 frequency pattern。其次,从构词法看,routine + ly 表示以某种方式进行,而这种方式与 as needed 相对。最后,两个 studies 的对比实验都显示 regular use pattern 比 occasional use 更有效,routinely 正是描述这种 regular pattern。综合来看,routinely 描述的是一种有规律的、固定的、持续的行为方式,类似于 daily 但可能不强调具体是每天,而是强调 regularity 和 consistency。

    并行-对比-结果三角定位法
  • insufficient 不足的;不充分的;不够的

    让我们把三条线索结合起来。首先,insufficient amounts 出现在 improper use 的 list 中,与 failing to reapply 和 staying too long 并列,都是 negative behaviors。其次,词的结构 in-suffici-ent 中,in- 前缀表示否定,暗示这是一个表示缺乏或不够的形容词。最后,从 第3段 的逻辑来看,improper use 会导致 sunburn,而 applying insufficient amounts 要导致这个后果,必然是指涂抹的量不够。三条线索共同指向:insufficient 是一个否定意义的形容词,描述数量、程度或质量上的不足、不够、不充分。

    结构-功能-后果三层分析法
RHETORIC · 修辞手法

7 处修辞手法与仿写

每处修辞给出它在本文的具体用法、同类信号词清单与一份可直接套用的 写作仿写建议——读完能认,也能写。

  • 列数字

    P2 P3

    文章在 第2段 中引用了 Australian study 的 data:1,621 people 和 daily sunscreen 使用者的 melanoma rate 减半,以及第二个 study 对比了 1,167 melanoma patients 和 1,101 healthy individuals。这些 specific numbers 直接 support 了主旨中 sunscreen 效果有限的 argument,通过 quantitative evidence 增强了 credibility,让读者看到即使有 research data,protection 依然 incomplete。数字的 precision 也暗示了 scientific rigor,但同时文中指出 study 的 limitation(rely on memory),这种 balanced presentation 防止读者 over-interpret 数据,reinforcing 主旨中需要 combined measures 的观点。

    信号词 1,621 people 1,167 people 1,101 half the rate 2011 five episodes factor 50 a couple of hours

    仿写: 在写 expository essay 时,想想你的 claim 能否用 statistics 或 measurements 来 support?比如讨论 air pollution,与其说 'serious problem',不如写 'PM2.5 levels reached 150 μg/m³, three times the WHO standard'。仿写模版:【主题陈述】+ According to/A study of + 【具体数字+研究对象】+ found/showed that + 【数字化的结果】+ 【对结果的interpretation】。例如:'Screen time concerns parents. A 2023 survey of 2,340 families found that children spending over 4 hours daily on devices showed 60% higher attention difficulties, suggesting digital habits significantly impact cognitive development.'

  • 举例子

    P1 P2 P3

    第1段 举出了 high-risk characteristics 的 examples:red or blond hair, fair skin, blue or green eyes。第2段 列举了 other sun protection forms:hats, long sleeves, staying in the shade。第3段 给出 improper sunscreen use 的 instances:applying insufficient amounts, failing to reapply, staying too long。这些 concrete examples 让 abstract concepts like 'risk factors' 和 'sun protection' 变得 tangible and relatable。它们 support 主旨中 'combining measures' 的必要性,因为 examples 展示了 sunscreen 单独使用的 inadequacy 和需要 complementary actions。Specific instances 也帮助 readers self-assess their situations,增强文章的 practical value。

    信号词 such as if you have including for example like alongside other forms

    仿写: 写 expository text 时,每当提出一个 general statement,问自己 'like what?'。找 2-3 个 specific instances 来 flesh out your point。注意 examples 应该 progressive(从简单到复杂)或 diverse(covering different aspects)。仿写模版:【概括性陈述】+ such as/including/for example + 【例子1】,【例子2】, or 【例子3】+ 【例子的共同点或影响】。例如:'Effective time management requires eliminating distractions such as turning off phone notifications, using website blockers, or designating a quiet workspace, all of which help maintain sustained focus.'

  • 作比较

    P2

    第2段 进行了 direct comparison:randomly selected people applying sunscreen daily vs. people using cream as needed,结果是前者的 melanoma rate 是后者的 half。还有 1,167 melanoma patients vs. 1,101 non-cancer individuals 的 comparison。这种 comparative structure 凸显了 sunscreen use 的 differential effects,directly support 主旨中 'reduces but cannot prevent' 的 nuanced claim。通过 juxtapose 不同 groups 的 outcomes,comparison 让 readers 看到 variables 的 impact,同时也揭示了即使 with protection,risk 仍然 exists。这种 contrast 增强了文章对 'false sense of security' 的 warning。

    信号词 compared to comparing versus while other than half the rate alongside

    仿写: 在构建 argument 时,identify 可以 contrast 的 elements:different approaches, groups, time periods, or conditions。使用 comparative structures 来 structure your analysis。仿写模版:【A组/方法】+ compared to/versus + 【B组/方法】+ showed/had/demonstrated + 【差异性结果】+ suggesting/indicating that + 【解读】。或者:While 【A】+ 【特征/结果】,【B】+ 【对比特征/结果】+ 【implication】。例如:'Students who reviewed material through active recall had 40% better retention compared to those who simply reread notes, suggesting retrieval practice strengthens memory encoding more effectively than passive review.'

  • 下定义

    P1

    第1段 对 melanomas 进行了 definition:'the most aggressive skin cancers'。这个 precise definition 立即 establish 了 topic 的 seriousness 和 article 的 focus。通过 define melanomas as 'aggressive',作者 set the stakes high,making 主旨中 'cannot prevent' 的 warning 更加 urgent。Definition 也区分了 melanomas 和 'other skin cancers',这个 distinction 贯穿全文,支持了需要 specific attention 和 multiple protective measures 的论点。Clear definition 在 expository writing 的开头 crucial,因为它 anchors readers' understanding 并 frames subsequent discussion。

    信号词 are is refers to means defined as known as called

    仿写: 在 introduce key terms 时,especially 如果它们是 technical, unfamiliar, or central to your argument,provide a clear definition early。使用 copula verb 'is/are' 或 appositive structure(term + comma + definition)。仿写模版:【术语】+ is/are + 【broader category】+ that/which + 【distinguishing characteristics】。或者:【术语】+ (定语从句/同位语) + 【关键特征】。例如:'Cognitive load refers to the total mental effort required in working memory, which increases when learners must process multiple information streams simultaneously.' 或 'Phishing, a cybercrime technique that uses deceptive emails to steal personal information, has become increasingly sophisticated.'

  • 分类别

    P1 P2

    文章在多处 categorize information:第1段 区分了 melanomas 和 'other skin cancers',并 categorize risk factors(physical traits vs. exposure patterns:'periodic intense exposure' vs. 'long-term exposure')。第2段 将 sun protection 分为 sunscreen 和 'other forms'(hats, sleeves, shade)。这种 classification 支持主旨的 core argument:sunscreen 只是 one category of protection,必须与 other categories combined。通过 establish distinct types,作者能够 analyze 每个 category 的 specific effectiveness,revealing sunscreen alone 的 insufficiency。Categorization 也帮助 organize complex information,making the comparison between different protection methods 更加 systematic 和 persuasive。

    信号词 other types forms kinds categories classified into divided into include

    仿写: 当面对 complex topic with multiple dimensions 时,考虑 break it down into logical categories。Identify the classification basis(按什么标准分?)并 ensure categories are exhaustive and distinct。仿写模版:【总体主题】+ can be classified/divided into + 【category A】+ and + 【category B】+ 【补充说明各类特征】。或者:There are 【number】+ types/forms/kinds of + 【主题】:【type 1】+ 【特征】,【type 2】+ 【特征】。例如:'Learning strategies can be classified into cognitive strategies, which involve direct manipulation of material like summarizing and elaborating, and metacognitive strategies, which involve planning and monitoring one's own learning process.' Classification 后要 follow with analysis of each category。

  • 引资料

    P1 P2 P3

    第2段 extensively cites research:'A 2011 Australian study', 'A second study',并 reference 'this week's Nature' in 第1段。这些 citations 为文章的 claims 提供 authoritative backing,transform personal opinions into evidence-based arguments。引用 Nature(顶级 scientific journal)immediately elevate credibility。Australian studies 的 specific details(sample sizes, methodologies)让 argument 更 rigorous。但文章也 critically evaluate sources,指出 'it's not entirely reliable' due to reliance on memory,这种 balanced approach 增强了作者的 trustworthiness。Citations support 主旨中关于 sunscreen 局限性的 nuanced claim,showing it's based on scientific consensus rather than speculation。

    信号词 study research according to shows found Nature evidence A second study recent research

    仿写: 在 make important claims 时,ask 'what evidence supports this?'。寻找 reputable sources(peer-reviewed studies, authoritative organizations, expert opinions)。Integrate sources smoothly:don't just drop quotes,而是 introduce source, present key finding, then explain its significance to your argument。仿写模版:According to + 【来源+时间/出处】+ 【研究发现/观点】+ 【你的解读或链接到论点】。或者:【研究类型】+ of + 【sample描述】+ found/showed/revealed that + 【发现】+ 【implication】。例如:'According to a 2024 MIT study published in Science, AI-assisted coding reduced debugging time by 35% among professional developers, suggesting that human-AI collaboration significantly enhances programming efficiency.' 记得 evaluate source reliability when relevant。

  • 作诠释

    P2 P3

    第2段 对 study limitations 进行 explanation:'The study relied on people remembering what they had done over each decade of their lives, so it's not entirely reliable.' 这个 interpretation clarifies 为什么 evidence 'is weaker'。第3段 解释 sunburn 的 significance:'It is sunburn that is most worrying' 然后 elaborate 为什么(increases risk)。这些 explanatory passages 帮助 readers understand 不仅 what(facts),还有 why(reasons)和 how(mechanisms)。Interpretation 支持主旨中 'false sense of security' 的观点,因为它 reveals underlying problems with both sunscreen effectiveness 和 people's usage patterns。通过 explain rather than just assert,文章增强 persuasiveness 并帮助 readers make informed decisions。

    信号词 so this means that is in other words therefore thus indicating suggesting because

    仿写: After presenting a fact, statistic, or claim,不要 assume readers automatically grasp its significance。Add an explanatory sentence that spells out 'so what?'。用 causal or elaborative connectives 来 signal you're interpreting。仿写模版:【陈述事实/数据】+ This means/suggests/indicates that + 【解释含义或影响】。或者:【现象/发现】+ 【原因/机制解释】+ so/therefore + 【推论】。例如:'Only 23% of users enable two-factor authentication. This means the vast majority of accounts remain vulnerable to password breaches, indicating a critical gap between available security tools and actual protection.' 或 'The algorithm prioritizes recency over relevance, so newer but less useful content often appears first, frustrating users seeking high-quality information.'

IMPLIED MEANING · 言外之意

6 处话里有话

作者没有明说、但靠信号词传递出来的态度与暗示——每处给出原文片段、信号词类型与解读。

  • 高倍防晒霜的保护作用存在局限性

    P1
    If you think a high-factor sunscreen keeps you safe from harmful rays, you may be wrong.

    委婉表达 may be wrong might not be could be mistaken seem to appear to tend to suggest that

    这个 opening statement 的 implied meaning 是:大众对 high-factor sunscreen 的 protective power 存在 significant overestimation。虽然用了 'may be wrong' 这种 tentative language,但结合后面 'it can't prevent them' 这个 definitive statement,我们可以看出 author 其实是在 firmly state 一个 fact:防晒霜不能完全 prevent melanomas。这个 implication 对 article thesis 的 role 非常关键,它在 opening 就 establish 了整篇文章的 argumentative foundation:需要 debunk 关于 sunscreen efficacy 的 misconception,并 advocate for comprehensive protection measures。这种 rhetorical strategy 既能 grab attention 又能 set the tone for critical analysis。

  • 防晒霜预防黑色素瘤的证据不够充分

    P2
    There is continuing debate as to how effective sunscreen is in reducing melanomas—the evidence is weaker than it is for preventing other types of skin cancer.

    对比类 weaker than less effective than not as strong as inferior to less convincing than more limited than pales in comparison to

    这个 comparison 的 real implication 是:防晒霜在 preventing melanomas 方面的 effectiveness 是 questionable 和 controversial 的。通过说 evidence is 'weaker',author 不只是在 state a fact,更是在 cast doubt on 依赖 sunscreen alone 的 protection strategy。这个 implied message 对 thesis 的 contribution 在于它 provides scientific grounding for 文章的 main argument:既然 evidence 本身就 weak,那么 relying solely on sunscreen 就更加 problematic。它还 paves the way for 后面 introduce alternative protection methods,因为既然 sunscreen 的 evidence base 有 limitations,naturally 就需要 comprehensive approach。

  • 其他防护措施比防晒霜更有效

    P2
    This study said other forms of sun protection—not sunscreen—seemed most beneficial.

    否定强调类 not sunscreen not... but not A—B instead rather than instead of far from anything but

    这个 negative emphasis 的 implied meaning 非常 clear:防晒霜不应该是 primary reliance,physical protection measures 才是 most effective approach。通过 explicitly state 'not sunscreen',author 在 directly challenge 人们对 sunscreen 的 over-reliance,并 shift priority 到 hats、long sleeves、shade 这些 alternatives。这个 implication 对 thesis 极为 important,因为它 provides empirical basis for 提倡 combination approach。它也 reinforces 第一段的 opening claim 关于 sunscreen alone being insufficient,并为最后一段的 'slip-slop-slap' multi-measure strategy 做了 crucial groundwork。这种 evidence-based negation 让 argument 更有 persuasiveness。

  • 研究可靠性存在方法学缺陷

    P2
    The study relied on people remembering what they had done over each decade of their lives, so it's not entirely reliable.

    模糊限制语 not entirely reliable not completely accurate somewhat questionable to some extent not fully partially relatively

    这个 hedging statement 的 deeper implication 是:这个 study 的 findings 不应该被 taken at face value,而且 methodology 的 weaknesses 让 conclusions become questionable。但 clever 的是 author 紧接着说 'But it seems reasonable to think sunscreen gives people a false sense of security',这就表明虽然 study 本身 unreliable,但它 suggested 的 conclusion(false sense of security)其实 makes logical sense 并且可以 independently supported。这个 implication 对 thesis 的 value 在于它 demonstrates critical thinking:既 acknowledge evidence limitations 又不 completely dismiss 有 merit 的 insights。这种 nuanced approach 让整个 argument 更 credible 和 sophisticated。

  • 防晒霜给人虚假的安全感

    P2
    But it seems reasonable to think sunscreen gives people a false sense of security in the sun.

    转折+情态词组合 But it seems reasonable to think However, it appears likely that Yet it is plausible that Nevertheless, one might conclude Still, it seems probable that But it would be logical to assume However, it is fair to say

    这个 statement 的 real implication 是 author 确信 sunscreen 确实 creates false sense of security,这不是一个 tentative guess 而是基于 logical reasoning 的 firm conclusion。通过说 'reasonable to think',author 在 invite readers 去 accept 这个 viewpoint as common sense 而不是 controversial claim。这个 implied certainty 对 thesis 非常 critical,因为 'false sense of security' 正是 explains 为什么 people over-rely on sunscreen 并 neglect other protection measures。它 connects 前面关于 evidence weakness 的 discussion 和后面关于 improper use 的 observations,形成一个 coherent causal chain:weak evidence → but creates false security → leads to misuse and over-reliance → therefore need comprehensive protection。

  • 防晒霜使用不当的问题普遍存在

    P3
    Many people also don't use sunscreen properly—applying insufficient amounts, failing to reapply after a couple of hours and staying in the sun too long.

    递进类 also furthermore moreover in addition additionally besides what's more

    这个 'also' 引出的 point 的 implied significance 是:防晒霜的 problem 不仅在于 product itself 的 limitations,更在于 people's improper use 让 already limited protection 变得 even less effective。通过 enumerate 三个 specific misuse behaviors,author 暗示这些 mistakes 是 common patterns 而不是 isolated cases。这个 implication 对 thesis 的 role 是 reinforce 为什么 comprehensive approach 如此 necessary:既然 product 本身 has limits 而且 people typically misuse it,单靠 sunscreen 就 doubly inadequate。这为最后一段的 combination strategy(slip-slop-slap)提供了 strong justification,因为 multiple measures 既能 compensate for product limitations 又能 reduce 对 proper sunscreen application 的 complete dependence。

AUTHOR ATTITUDE · 作者态度

作者态度:客观中立

结论先行:本文作者态度为客观中立( cautiously objective (critical of over-reliance, but constructive in the end))。下面是按步骤还原的判断过程与文中的态度信号词。

  1. 开篇纠偏句定调 P1

    说明文虽然以陈述fact和research结果为主,但作者常常通过开篇的provocative statement来暗示自己对某个common belief(比如'sunscreen绝对安全')的质疑,这是判断attitude的第一手线索。

  2. 证据可信度评价词提取 P2 P3

    说明文的核心是呈现data和study结果,但作者对evidence strength的评价(比如某个study'不reliable')恰恰暴露了他对话题的真实stance,这比单纯罗列数字更能反映attitude。

  3. 结尾情感转折定调 P4

    说明文常常在结尾给出summary或recommendation,这里的positive词汇往往标志着作者态度从质疑转向constructive,是整体attitude的最终定音。

  4. 三段式态度整合 P1 P2 P3 P4

    说明文的attitude往往不是单一维度的positive或negative,而是像本文这样呈现一个演进过程——从质疑common misconception,到承认evidence有limitation,最后给出practical solution,这种层层递进正是说明文常见的论证结构。

文中的态度信号词

  • you may be wrong P1

    这个短语直接point out了reader常见的misconception,说明作者不是单纯陈述fact,而是带着corrective意图引导读者reconsider自己的认知。

    同类词 contrary to popular belief it turns out that in fact

  • debate P2

    'debate'一词表明作者承认这个topic在学术界还存在disagreement,暗示作者不会给出absolute positive或negative的结论,而是保持一种cautious的立场。

    同类词 controversy mixed evidence inconclusive uncertain

  • false sense of security P2

    这个短语明确critical地指出sunscreen可能带来的negative side effect,即让人过度依赖而放松警惕,是作者对over-reliance on sunscreen的直接warning。

    同类词 misleading overconfidence give people the impression

  • not entirely reliable P2

    作者在这里直接对study的methodology提出质疑(依赖people's memory),说明作者对evidence的态度是critical而非uncritical acceptance。

    同类词 limitations of the study should be interpreted with caution the data is imperfect

  • most worrying P3

    这个词组强调了sunburn带来的risk,是作者在warning读者哪个行为最危险,属于negative evaluative language。

    同类词 alarming of great concern particularly risky

  • good news P4

    'good news'是全文唯一明确的positive信号,标志着作者态度从质疑与警示转向constructive肯定,说明combined protection是有效的solution。

    同类词 fortunately encouragingly on the bright side

GENRE · 速判体裁

30 秒判定这是一篇说明文

体裁决定读法与出题套路。以下判断步骤与标志词全部以本文为例,可直接迁移到其他英语四级 真题文章。

如何快速判断这是一篇说明文?

  1. 首句的信息呈现方式 P1

    第1段 开头就 presents the topic of sunscreen effectiveness,用 'Research in this week's Nature shows' 来 introduce findings,这是典型的 expository writing pattern。议论文会先抛出 controversial statement 或 author's position,新闻报道会用 lead paragraph 强调 who/what/when/where 的时效性 facts。

  2. 段落的主题分块方式 P2 P3

    第2段 和 第3段 分别 explain 'debate on effectiveness' 和 'improper usage',每段都在 elaborate on specific facets of the topic。议论文的 body paragraphs 会层层递进地 support a thesis,新闻报道会按 inverted pyramid 排列 decreasing importance 的 facts。

  3. 作者的立场表达强度 P1 P2 P3 P4

    全文作者在 presenting both sides of the debate('sunscreen gives false security' vs. 'combination can reduce rates'),maintain informative tone 而非 persuasive tone。议论文作者会用 'must', 'should', 'clearly' 等 forceful language 来 advocate。

  4. 结尾的功能导向 P4

    第4段 用 'So if there is a heat wave' 来 provide actionable advice based on 前文 explained evidence,这是 expository conclusion 的 typical move。议论文会 end with call to action 或 reaffirm thesis,新闻会用 final quotes 或 future implications。

  5. 文体特征的完整闭环 P1 P2 P3 P4

    四个 identifying markers 同时出现时,基本确定是 expository writing:开篇的 topic presentation,主体的 aspect elaboration,全程的 objective stance,结尾的 practical synthesis。议论文会在这四处都 show persuasive intent,新闻会 show journalistic conventions(timeliness, attribution, inverted pyramid)。

哪些词暴露了说明文体裁?

  • melanomas P1 说明对象定义解释词 sunscreen skin cancers factor 50 harmful rays aggressive skin cancers
  • research shows P1 事实陈述与研究引证词 evidence is study found Australian figures
  • You have a higher risk if P1 条件说明与分类描述词 if you have periodic if a close relative if there is a heat wave
  • there is continuing debate P2 客观现状呈现词 the evidence is it seems reasonable It is sunburn that is the good news is
  • how effective P2 说明顺序与程度解析词 what they had done what is most worrying most beneficial most aggressive
  • Many people also don't use P3 现象描述与行为模式词 Many people people randomly selected people who used people remembering
  • So if there is P4 逻辑总结与实践应用词 So if it would be best as shown by the good news is that
SENTENCE INSIGHTS · 句子精讲

2 句真题句逐层精讲

下列真题句各有独立的句子解析页——中文翻译、结构树逐层拆解、成分与时态、考点讲解与真题高频词。点击句子进入完整解析。

FAQ · 常见问题

关于 2015年6月英语四级真题第2套 Part III Section C (1) 的常见问题

2015年6月英语四级真题第2套 Part III Section C (1) 文章的主旨是什么?
高倍数防晒霜本身无法完全预防黑色素瘤,尽管能减少其发生。有效的防晒需要将防晒霜与防护服和遮阳等其他措施结合使用,因为防晒霜可能产生虚假安全感且常被不当使用。(英文表述:High-factor sunscreen alone cannot fully prevent melanomas, despite reducing their occurrence. Effective sun protection requires combining sunscreen with other measures like protective clothing and shade, as sunscreen may create false security and is often misapplied.)
2015年6月英语四级真题第2套 Part III Section C (1) 文章是什么体裁?难度如何?
体裁为说明文,作者立场是客观中立(cautiously objective (critical of over-reliance, but constructive in the end))。CEFR 难度 C1,全文 340 词、4 段;在英语四级全部 511 篇真题文章中,C1 级共 163 篇(占 32%)。
2015年6月英语四级真题第2套 Part III Section C (1) 文章的篇章结构是怎样的?
全文 4 段按说明文骨架分为 4 个意群:第1段——防晒霜的局限性与黑色素瘤风险;第2段——防晒霜有效性的研究证据与争议;第3段——防晒霜使用不当的实际问题;第4段——综合防护策略与行动建议。
2015年6月英语四级真题第2套 Part III Section C (1) 文章的作者态度是什么?
作者态度是客观中立(cautiously objective (critical of over-reliance, but constructive in the end))。判断路径:开篇纠偏句定调 → 证据可信度评价词提取 → 结尾情感转折定调 → 三段式态度整合;文中的态度信号词包括 you may be wrong(第1段)、debate(第2段)、false sense of security(第2段)、not entirely reliable(第2段)、most worrying(第3段)、good news(第4段)。
2015年6月英语四级真题第2套 Part III Section C (1) 文章中有哪些值得积累的生词?
按文中出现顺序共 4 个:aggressive(恶性的;侵袭性强的;危险程度高的)、intense(强烈的;剧烈的;高强度的)、routinely(常规地;例行地;有规律地)、insufficient(不足的;不充分的;不够的),每个词的词义都可以由文中上下文线索推断得出。

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