Desertification is a growing world problem, and nowadays the United Nations and its member countries hard to combat it． A．are working B．has worked C．work D．worked 题目和参考答案——青夏教育精英家教网—

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Desertification is a growing world problem, and nowadays the United Nations and its member countries _________hard to combat it．

A．are working B．has worked C．work D．worked

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60．Which country is the writer most possibly from?

A．Japan. B．Canada. C． China. D． America.．

61．Which of the following statements is NOT true according to the passage?

A．Australia has enough laws to fight against pollution.

B．Perth is the biggest city in Australia.

C．Most of the wild flowers in Perth are different from what the author sees in his/her country.

D．The author enjoyed his/her visit in the country.

62．The underlined word “exhibition” in the third paragraph means___.

A．a public flower show for people to visit

B．a market where you can buy all kinds of flowers

C．a place where all kinds of flowers are grown

D．a field where there are flowers and animal

63．According to the passage, when we talk about Australia, we will think of_____.

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A．to B．for C．with D．of

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A．Observed B．Observing

C．Having observed D．Having been observed

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A．deadly B．surprising C．disappointing D．frightening

65．What’s the purpose of the research led by Christ Thomas?

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B．To call on people to control greenhouse gases．

C．To warn us of the extinction of many animals and plants．

D．To study the effects of global warming on animals and plants．

66．Why did species living in mountainous areas have a better chance of survival?

A．Mountains helped keep them out of more heating．

B．Global warming had no effect on mountainous areas．

C．There were no greenhouse gases in mountainous areas．

D．There were more water in mountains than in deserts．

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A．It is certain that many plants and animals will die out．

B．Half of the Australian butterflies would die out．

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B．Extinct animals in the world

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