题目内容

【题目】In spite of all the efforts __________ these endangered species, many of them have died out over the years.

A. to protect B. protecting

C. protected D. having protected

【答案】A

【解析】句意:尽管为保护这些濒危物种做出了努力,但是,多年来仍有许多物种灭绝了。efforts to do sth. 为做某事而做出努力,不定式作定语

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【题目】

Is running a marathon in under two hours possible? Will a human ever be able to run that fast? Currently, the world record for the 42.195 km (26.219 miles) distance is held by Kenyan Dennis Kimetto. His time of 2:02:57 hours was achieved at the Berlin Marathon of 2014.

For many years, long-distance runners have been trying to get nearer and nearer to the magical mark of two hours. Studies published in the past by medical and athletic experts have come to the conclusion that running a marathon in under 2 hours can be done. They even see a time of around 1:57 as the fastest a human can ever run. However, we will have to wait at least a decade or longer for this to happen.

Many things must fit together to deliver an under two-hour marathon. An athlete would have to have the perfect body size and weight, the right running strategy and of course, the right nutrition. Today's most perfect runners come from Kenya and Ethiopia, countries that have dominated (统治) long-distance races for decades. East African athletes have long legs and lungs that can take in lots of oxygen. Training at high altitudes gives them a strong heart and a very large blood volume (容量).

Ideal weather conditions with cool temperatures and almost no wind will also be needed to attempt such a quick time. An ultra-fast marathon would only be possible on flat city courses, like Berlin or London, with few curves (弯道).

Since the beginning of the modern Olympic Games in 1896, athletes have tried to run long-distance races as fast as possible. In 1900, the marathon world record was around 3 hours. In the following 30 years, men were able to reach a mark of 2:30. As time went on achieving faster times became more and more difficult. In the last 15 years, for example, the world record has improved by only 3 minutes.

On the other hand, some experts think that such fast performances will only be possible with the help of illegal drugs or substances (物质). In the past years, several East African runners have been tested positive and many of them banned.

1What are Paragraphs 3 & 4 mainly about?

A.The benefits of running a marathon.

B.The conditions for an under two-hour marathon.

C.The development of modern long-distance races.

D.Perfect runners who can compete in a marathon.

2Which of the following does the author agree with?

A.East Africans are born to be long-distance runners.

B.It's impossible to beat the marathon world record again.

C.More and more athletes are losing their interest in marathons.

D.It's easier to achieve a marathon world record in Berlin than in London.

3What's the author's attitude towards running a marathon in under 2 hours?

A.Hopeful.B.Doubtful.

C.Uncertain.D.Uninterested.

4What's the main purpose of the text?

A.To inform.B.To discuss.

C.To educate.D.To persuade.

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