高考英语一轮复习练习题 Unit 2 The Olympic Games(含解析)新人教版必修2

1 The Olympic Games

李仕才

【阅读理解插花】

Vitamin B could help reduce the effects of the most dangerous type of air

pollution, according to a new study published on Monday. In the first study of its

kind, a team of international researchers looked into the damage caused by one of

the pollutants that have the severest impact on health—PM 2. 5.

They found that Vitamin B supplement could effectively reduce the impact of the

tiny particles(颗粒)on the human body, although they stressed that the research was

in its early stages. According to the WHO, 92% of the world’s people are living

in places where the PM 2. 5 level goes beyond the recommended level. So it’s urgent

to find a solution to the problem.

According to this study, published in the PNAS, 10 volunteers were initially

exposed to clean air and given a placebo(安慰剂)to check their baseline responses.

The group then kept on taking placebos for four weeks before being exposed to heavily

polluted air from downtown Toronto, where an estimated 1, 000 cars passed every hour.

The bad air was delivered to the volunteers through an “oxygen type” face mask.

The experiment was then repeated, with each volunteer taking a Vitamin B supplement

daily, made up of 2. 5 mg of folic acid, 50 mg of Vitamin B6, and 1 mg of Vitamin

B12.

Vitamin B6 can be found in liver, chicken, nuts and other things, and Vitamin

B12 in fish, meat, eggs, milk and some cereals. The researchers found that four weeks

of Vitamin B supplements reduced the damage of PM 2. 5 effects by 28-76%. The results

emphasized how prevention at an individual level could be used to fight against the

damage of PM 2. 5, the researchers said.

【文章大意】本文主要通过一些实验告诉我们维生素B对减轻PM 2. 5对身体的伤害有什么样的功效。

1. What’s the newly discovered effect of Vitamin B in Paragraph 1?

A. It can be used to replace other vitamins in our daily life.

B. It can help lower the air pollution level in the open air. 2 C. It can reduce the impact of PM 2. 5 on human bodies.

D. It can get rid of the pollutants remaining in our bodies.

【解析】选C。细节理解题。根据第一段“Vitamin B could help reduce the effects of

the most dangerous type of air pollution, according to a new study published on

Monday. ”, 可知维生素B可以减少造成空气污染的危险物质的影响, 而后一句又提到了对健康危害最大的危险物质是PM 2. 5, 故选C。

2. What can be learned from the second paragraph?

A. Further study about the effect of Vitamin B needs to be done.

B. Vitamin B is the most important to human’s health.

C. The tiny particles in the air are made up of PM 2. 5.

D. 92% of the world’s people are affected by PM 2. 5.

【解析】选A。细节理解题。根据第二段“. . . although they stressed that the research

was in its early stages. ”可知关于维生素B的功效的研究还处于初期阶段, 所以仍需进一步的研究探索。

3. How did researchers draw the new conclusion about Vitamin B?

A. By referring to a journal.

B. By performing experiments.

C. By interviewing scientists.

D. By comparing vitamins.

【解析】选B。推理判断题。根据倒数第二段“The experiment was then repeated, with

each volunteer taking a Vitamin B supplement daily, made up of 2. 5 mg of folic acid,

50 mg of Vitamin B6, and 1 mg of Vitamin B12. ”, 中的experiment表明研究者是通过做实验得出新的结论的。

4. You may read the passage on a website about ________.

A. environment B. medicine

C. education D. health

【解析】选D。推理判断题。本文主要通过一系列实验告诉我们维生素B可以减轻PM 2. 5对我们身体的伤害, 主题围绕着健康展开, 故选D。

Ⅰ 教材与语法填空 3 根据教材课文内容，在空白处填入1个适当的单词或括号内单词的正确形式。

Pausanias and Li Yan are talking about the similarities and 1. (different)

between the ancient and modern Olympics. The ancient Olympic Games were first held

in Athens, in which only men from the Greece had the honour 2. (compete). Now

great changes

3. (take) place to the Games. There’re two main sets of Olympic

Games 4. (hold) on a regular basis. Only athletes 5. have reached the

agreed standard will 6. (admit) as competitors. Nowadays any country can take

part in the Games. Women play a very important role 7. the Games. Countries

compete with each other 8. (host) the Games. 9. is a great responsibility

and honour to be chosen. Even the olive wreath has been replaced. The motto of the

Games is “10. (swift), Higher and Stronger”．

答案：1.differences 2.to compete 3.have taken 4.held

5．who 6.be admitted 7.in 8.to host 9.It 10.Swifter

Ⅱ 教材与话题写作

(Ⅰ)用本单元所学知识完成下列句子。

1．奥运五环旗中的五环代表地球上的五大洲。(stand for; continent)

答案：The five rings on the Olympic flag stand for the five continents on the earth.

2．任何国家都可以参加奥运会。(take part in)

答案：Any country can take part in the Olympic Games.

3．只有达到他们各自统一的标准的运动员才会被接受为竞赛选手。(admit; athlete;

competitor)

答案：Only athletes who have reached the agreed standard for their event will be

admitted as competitors.

4．除了运动员，也有一些志愿者。(apart from; volunteer; as well )