题干

(2009·江苏盐城调研考试)改革开放以来,特别是近年来,中国金融业发生了历史性的变化,中国工商银行、建设银行、农业银行等一批大型国有金融企业完成股份制改造,并在境内外成功上市。对国有金融企业实行股份制改造                                                                      (   )
①有利于实现投资主体的多元化 ②可以确保企业经济效益不断提高 ③说明公有制的实现形式是可以多种多样的 ④ 能够使公有资产在社会总资产中的比重不断提高

A:①②③

B:②③④

C:①③

D:②④

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答案(点此获取答案解析)

A

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阅读下面短文, 从每小题所给的A、B、C、D四个选项中, 选出最近选项并在答题卡上将该项涂黑。

    April 22 is Earth Day. Everyone on Earth should care about and protect the earth!

The earth has warmed by about 1°F (华氏度) over the past 100 years, but why and how? Well, scientists are not quite sure. Maybe the earth gets warmer and warmer on its own. But many scientists say that people are doing many things which make the earth warmer. First, greenhouse effect (温室效应) is a very important reason for the change of the earth. People give out too much energy into the air every year. It makes the earth warmer. Climate (气候) change is another important reason. Sometimes it becomes too hot and sometimes too cold. Sometimes there is too much rain and sometimes too little. The change of the climate makes the earth warmer. In turn, the warmth of the earth changes the climate, too.

When the earth becomes warmer, there may be more rain and a rise in sea level. It will affect the growth of plants, animals and people. On a Pacific island, 100 people have to move to higher ground because the sea is rising. These people can no longer live on the coast. Before that, two islands without people went underwater in 1999. Scientists say that the seas can rise by nearly one meter by 2100.

People can affect the earth's air, land and water. As for us, we can do many things to protect the earth. For example, we can use fridges less. We can tell more people about protecting the earth.