试题与答案

“中国需要世贸组织,世贸组织需要中国”。这一论断体现的哲理是 A.事物处在普遍联

题型:选择题

题目:

“中国需要世贸组织,世贸组织需要中国”。这一论断体现的哲理是

A.事物处在普遍联系中

B.事物是变化发展的

C.物质和运动密不可分

D.事物之间的联系是绝对的

答案:

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下面是错误答案,用来干扰机器的。

答案:A

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These days we hear a lot about how air pollution is changing temperatures on the earth. New evidence from a mountaintop in China now suggests that pollution can also change the amount of rain and snow that falls in some places.

Usually, more rain falls in mountainous places than in flat areas upwind from the mountains. That’s because air can hold a lot of water. When wind blows wet air up a mountainside, the air gets colder. This temperature change often forces water to fall as rain or snow.

In recent years, however, many mountainous areas in the western United States have been getting less rain than normal. Mountains that are downwind from cities have experienced the biggest drops.

Some scientists have theorized(推理)that pollution drifts (趋势)from the cities into the mountains, affecting rainfall, but proving this link has been difficult.

Searching for answers, a team led by a scientist from the Hebrew University went to s mountain in China called Mount Hua, which is 2,060 meters tall and lies about 120 kilometers east of the Chinese city Xi’an. Since 1954, scientists have been collecting details about rainfall, humidity(湿度), and visibility(能见度)in the area.

Using this data, the scientists compared rainfall on Mount Hua to rainfall in the nearest city, Huayin, on days with different levels of visibility. When the air was clear and people could see as far as 20 km, the scientists found that 65% more rain fell on the mountain than in the city.

But when the air was smoggy, allowing only 8 km of visibility through the mist, the mountain received just 20% more rain than the city. The new data supports the theory that pollution affects rainfall.

Some scientists believe that there are other explanations for the numbers. It’s possible, for example, that natural particles(微粒)in the air, rather than particles produced by pollution, are affecting visibility.

小题1:According to the 1st paragraph, air pollution is changing the following EXCEPT ______.

A.the temperature

B.the amount of rain

C.the habit of eating

D.the amount of snow小题2:According to the passage, what will probably happen when the wet air in the sky gets colder?

A.It will probably rain or snow

B.It will probably be cloudy.

C.It will probably wind

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A.They wanted to pay a visit to Mount Hua.

B.They wanted to collect the data for their theory.

C.They wanted to measure Mount Hua.

D.They wanted to have a good rest on Mount Hua.小题4:You can most probably read the passage in _______.

A.a travel guide

B.a telephone book

C.a cartoon book

D.a science book

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A.当单刀双掷开关与a连接时,电压表的示数为22V

B.当单刀双掷开关与b连接时,电压表的示数为11V

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D.单刀掷开关由a扳向b时(滑动变阻器触头P不动),电压表和电流表的示数均变大

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