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题型:阅读选择 题类:常考题 难易度:普通

江西省奉新县奉新二中2019-2020九年级下学期英语4月月考试英语试卷

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Every day, people may touch thousands of chemicals(化学药品).These chemicals are said to be harmless to humanhealth. In fact, the chemicals are considered so safe that we may wash with them.We put them on our bodies and even our faces. Other chemical products are used aroundour homes. Each chemical seems harmless on its own. But when connected with otherchemicals,they may become deadly. That is the finding of a two-year studyby a high-profile (高调的) task force of scientists. The taskforce was told to find the cancer-causing(致癌)possibilityof chemical mixtures.

Linda Gulliver was one of the 174 scientists on the task force. Theirjob was to study the cancer-causing possibility of 85 chemicals. All 85 are saidto be common in the environment.

Ms. Gulliver explains that chemicals have the possibility or abilityto form dangerous mixtures. Even simple minerals(矿物) can become dangerous when mixed with chemicals found in plastics orbeauty products.

She says the latest way to find whether(是否) chemicals cause cancer is to test them one ata time. This method leads to a long list of "safe" chemicals. She alsosays, "We need some researches to find out what mixtures of chemicals wouldbe more harmful than others; what groups of chemicals, when together, would producemore harmful effects(影响). But at the moment, that is notknown."

(1)、What may happen if one single(单一的) chemical have on us according to the text?
A、It may make us ill. B、It may not be dangerous to us. C、It may let us have cancer easily. D、It may let our body make a change.
(2)、What can we learn about Ms Gullivers research?
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.
(3)、What does the underlined word "they" refer to?
A、One simple chemical. B、Other chemicals. C、Mixtures of chemicals. D、All chemicals
(4)、What is the best title for the text?
A、Mixtures of Safe Chemicals May Cause Cancer B、Being Exposed to One Chemical Is Dangerous C、How Do Mixtures of Safe Chemicals Develop? D、What Is the Real Reason for Cancer?
举一反三
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