题目内容
9.A new study has found no evidence that sunscreen,commonly used to reduce the risk of skin cancer,actually increases the risk.Researchers from the University of Iowa based their findings on a review of 18earlier studies that looked at the association between sunscreen use and melanoma.They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma.
Most health experts believe that by protecting the skin form the harmful effects of the sun,sunscreen helps prevent skin cancer,which is increasing in incidence faster than any other cancer in the United States.
But question have been raise about sunscreen and whether it may have the opposite effect,perhaps by allowing people to remain exposed to the sun longer without burning.
The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer---people with fair skin and freckles,for example-are more likely to use sunscreen.As a result,it may appear that sunscreen users get cancer more often.
The studies,which generally relied on volunteers to recall their use,were also unable to prove how well the products had been applied,said the new study.
13.The underlined word"flaws"in the 2nd paragraph most probably meansC.
A.evidences B.facts C.faults D.failures
14.We can learn from the passage thatD.
A.sunscreen users get skin cancer more often
B.the volunteers have proved the effects of sunscreen
C.the new study was based on the experiences of volunteers
D.the number of skin caner patients is increasing in America
15.Which of the following can be the best title for this passage?A
A.Sunscreen to Prevent Skin Cancer
B.Sunscreen to Increase Skin Cancer
C.Skin Cancer Caused by Sunscreen
D.Skin Cancer Caused by Freckles.
分析 本文主要写了防晒霜对于皮肤的作用,
解答 13.C 词义猜测题.从第一段A new study has found no evidence that sunscreen,…,actually increase the risk.一项新的研究发现没有证据表明防晒霜实际上增加了风险.得出…in studies that had reported associations between sunscreen use and higher risk of melanoma.防晒霜使用与黑色素瘤风险增高的关系,存在"过错".所以答案是C.
14.D 推理判断题.从第三段…which is increasing in incidence faster than any other cancer in the United States.在美国发病率比其他任何癌症都要快.可以推断答案是D.
15.A 主旨大意题.文章主要谈论防晒霜与皮服癌,并从最新的研究中证明sunscreen helps prevent skin cancer.防晒霜有助于预防皮肤癌.所以答案选A.
点评 阅读理解题测试考生在阅读基础上的逻辑推理能力,要求考生根据文章所述事件的逻辑关系,对未说明的趋势或结局作出合理的推断;或根据作者所阐述的观点理论,对文章未涉及的现象、事例给以解释.考生首先要仔细阅读短文,完整了解信息,准确把握作者观点.
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