Question

12．Every day，people come into contact with thousands of chemicals．These chemicals are said to be harmless to human health．In fact，the chemicals are considered so safe that we wash with them．We put them on our bodies and even our faces．Other chemical products are used throughout our homes．
By the time you walk out of your front door，you have already been exposed to thousands of chemicals．
On its own，each chemical seems harmless．But in combination with other chemicals，they may become deadly．That is the finding of a two-year study by a high-profile（高調(diào)的）task force of scientists．The task force was told to investigate the cancer-causing possibility of chemical mixtures．
Linda Gulliver was one of the 174 scientists on the task force．Their job was to study the cancer-causing potential of 85 chemicals．All 85 are said to be common in the environment．
Ms．Gulliver explains that chemicals have the potential or ability to form dangerous mixtures．Even simple minerals can become dangerous when mixed with chemicals found in plastics or beauty products．
Working in groups，the scientists explored how different chemical mixtures could lead to cancer．Ms．Gulliver's team looked at the ability of different combinations to support the increase of malignant（惡性的）human cells．
She says the current way to identify whether chemicals cause cancer is to test them one at a time．This method leads，she adds，to a long list of supposedly"safe"chemicals．She and her team say that approach needs to change．
"We definitely need certain research…to find out what mixtures of chemicals would be more harmful than others； what groups of chemicals，when together，would produce more harmful effects．And at the moment，that is not known．"
An estimated one in five cancers has been linked to chemical exposure．It may turn out that the cancer-causing villain（惡棍）is not a single chemical at all．

32．What effect may one single chemical have on us according to the text？B
A．It may destroy our body．
B．It may not cause danger to us．
C．It may let us suffer from cancer．
D．It may let our body make a change．
33．What can we learn about Ms．Gulliver's research？D
A．She has found 85 cancer-causing chemicals．
B．She has found reasons for five kinds of cancers．
C．She has found that only one chemical can cause cancer．
D．She is not sure what mixtures of chemicals are more harmful．
34．According to the text，we can infer that the studyB．
A．is just wasting time and money
B．is still in need of great efforts
C．will cause panic in public
D．will be resisted by the public
35．What is the best title for the text？A
A．Mixtures of Safe Chemicals May Cause Cancer
B．Being Exposed to One Chemicals Is Dangerous
C．How Mixtures of Safe Chemicals Come into Being？
D．What Is the Real Cause For Cancer？

Answer 1

分析 短文主要講了單一的化學(xué)物品可能對(duì)我們是無(wú)害的，但是如果與其他的化學(xué)物品混合在一起就可以導(dǎo)致癌癥．

解答 32．B，細(xì)節(jié)理解題，根據(jù)句子 On its own，each chemical seems harmless可知單一的化學(xué)物品是對(duì)我們無(wú)害的，故答案為B．
33．D，推理判斷題，根據(jù)句子what groups of chemicals，when together，would produce more harmful effects可知她不知道哪些化學(xué)物品混合在一起會(huì)更有害，故答案為D．
34．B，推理判斷題，根據(jù)科學(xué)家所說(shuō)的話(huà)And at the moment，that is not known．可知這個(gè)研究還需付出很大的努力，故答案為B．
35．A，主旨大意題，短文主要講了單一的化學(xué)物品可能對(duì)我們是無(wú)害的，但是如果與其他的化學(xué)物品混合在一起就可以導(dǎo)致癌癥，故最好的標(biāo)題是"安全化學(xué)物品的混合可能會(huì)導(dǎo)致癌癥"．

點(diǎn)評(píng) 解答任務(wù)型閱讀理解題，首先對(duì)原文材料迅速瀏覽，掌握全文的主旨大意．因?yàn)殚喿x理解題一般沒(méi)有標(biāo)題，所以，速讀全文，抓住中心主旨很有必要，在速讀的過(guò)程中，應(yīng)盡可能多地捕獲信息材料．其次，細(xì)讀題材，各個(gè)擊破．掌握全文的大意之后，細(xì)細(xì)閱讀每篇材料后的問(wèn)題，弄清每題要求后，帶著問(wèn)題，再回到原文中去尋找、捕獲有關(guān)信息．最后，要善于抓住每段的主題句，閱讀時(shí)，要有較強(qiáng)的針對(duì)性．對(duì)于捕獲到的信息，要做認(rèn)真分析，仔細(xì)推敲，理解透徹，只有這樣，針對(duì)題目要求，才能做到穩(wěn)、準(zhǔn)．