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2018高二英语外研版选修六习题:单元卷五 含答案

单元质量检测(五)

(时间:100分钟满分:120分)

Ⅰ.阅读理解(共15小题;每小题2分,满分30分)

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

A

A test to tell if you are at risk from Alzheimer's disease (阿尔茨海默氏病) and dozens of other conditions goes on sale in Britain today costing £125.

The test uses a saliva sample to provide more than 100 pieces of genetic information including whether users are more likely than normal to suffer Parkinson's disease (帕金森病), some cancers or baldness.

It can also predict whether they like coffee or hate Brussels sprouts (甘蓝), which type of exercise is likely to suit them best and give information about a person's ancestry (家族).

The test, already available in the US, is being marketed online by 23andMe, a firm part-funded by Google.A customer spits into a tube, seals it and sends it back to 23andMe's labs for analysis. Four to six weeks later, they receive a detailed report in the post written in everyday language.

It will tell them, for example, whether their risk of Alzheimer's disease is higher or lower than average. 23andMe — run by Anne Wojcicki, wife of Google co-founder Sergey Brin —says its mission is to ensure that individuals can personally access, understand and benefit from the human genome (基因组).It says that armed with the information, people can take better care of their

health. For instance, the print-out may give someone the impetus (动力) they need to give up smoking or it could mean they receive regular health checks so that an illness can be caught — and treated early.

Genetic tests are already available in Britain but generally provide less information and are more expensive.

1.A test to tell if you are at risk from some diseases ________.

A.costs £125 every day

B.costs about £125

C.is of little use

D.can help sick people recover

2.What does the test make use of to provide genetic information?

A.The blood in a person's brain.

B.The liquid produced in a person's mouth.

C.The skin in a person's breast.

D.A person's hair.

3.Which of the following is TRUE according to the passage?

A.23andMe depends on Google financially.

B.23andMe is run by Sergey Brin and his wife.

C.Sergey Brin founded Google on his own.

D.23andMe is popular now.

B

There are three reasons why I don't think that we are ready for cloning.

Firstly, we don't know exactly what the consequences of cloning would be. For example, if scientists cloned a man, they might know what he would look like, but they wouldn't know his quality. What would happen if scientists cloned another Hitler or others like him? Do you really think we would survive if this became a reality?

Secondly, cloning raises many ethical questions. Look back at the cloned man that has been presented and ask yourself these questions:

“Do you really think that he would be a man?”

“Who would be responsible for him?”

“Do you think he should have the same rights as we have?”

I don't think that we can answer these questions now.

Lastly, we don't know exactly what the meaning of life is. In my opinion, creating life is the duty of nature, and we must not interfere (干预) with that task because we can't understand the extremely complicated relationships among lives that are defined by nature. Usually these relationships are extremely complex. Sometimes, they seem to be so untouchable that they cannot be changed. From my point of view, we have to look at the natural environment around us. We can see that an ecosystem (生态系统) is made up of a lot of different kinds of life, and each life has its own function within the system. If we disturb that, I think it could lead to our extinction (灭绝).

Even though cloning may have a lot of benefits for humans, I think we should stop cloning because we do not understand it and can't control all of its effects.