题目内容
12.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 50reduces 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 evidene is weaker than it is for preventing other types of skin cancer.A 2011Australian study of 1,621people 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 1,167people with melanomas to 1,101who 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 increases 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 (抹上)sunscreen and slap on a hat.
33.What is people's common expectation of a high-factor sunscreen?A
A.It will delay the occurrence of skin cancer.
B.It will protect them from sunburn.
C.It will keep their skin smooth and fair.
D.It will work for people of any skin color.
34.What does the research in Nature say about a high-factor sunscreen?B
A.It is ineffective in preventing melanomas.
B.It is ineffective in case of intense sunlight.
C.It is ineffective with long-term exposure.
D.It is ineffective for people with fair skin.
35.What do we learn from the 2011Australian study of 1,621people?D
A.Sunscreen should be applied alongside other protection measures.
B.High-risk people benefit the most from the application of sunscreen.
C.Irregular application of sunscreen does women more harm than good.
D.Daily application of sunscreen helps reduce the incidence of melanomas.
分析 本文写了人们对于防晒霜能否防晒能否保护皮肤的研究.
解答 33.A 根据第一句If you think a high-factor sunscreen (防晒霜)keeps you safe from harmful rays,you may be wrong果你认为高防晒系数的防晒霜能让你远离有害射线,那你就错了.由此可以推断出这是大部分人一般都这么认为的,所以答案选A.
34.B.细节理解题.根据句子 Melanomas are more common if you have periodic intense exposure to the sun.Other skin cancers are increasingly likely with long-term exposure.如果你有周期性的强烈暴露在太阳下,黑色素瘤更为常见,其他皮肤癌长期暴露的可能性也越来越大..可以推断出在强烈的阳光下sunscreen是无效的,所以答案选B.
35.D 细节理解题.根据句子A 2011Australian study of 1,621people found that people randomly selected to apply sunscreen daily had half the rate of melanomas of people who used cream as needed.人们发现,每天随机选择涂抹防晒霜的人有一半的黑色素瘤患病率.可见每天使用防晒霜有助于减少黑色素瘤的发病率.所以答案选D.
点评 本题考查社会文化类阅读理解.这类题材的阅读理解是高考常考的内容,难度较小,考生可以通读全文,了解大意,在此基础上再根据问题结合选项及语境做出正确的选择.