题目内容

Since the first Earth Day in 1970, Americans have gotten a lot “greener” toward the environment. “We didn’t know at that time that there even was an environment, especially we didn’t know that there was a problem with it,” says Bruce Anderson, president of Earth Day USA.

But what began as nothing important in public affairs (公共事件) has grown into a social movement. Business people, political leaders, university professors, and especially millions of grass-roots (草根) Americans are taking part in the movement. “The understanding has increased many, many times,” says Gaylord Nelson, the former governor from Wisconsin, who thought up the first Earth Day.

According to US government reports, emissions from cars and trucks have dropped from 10.3 million tons a year to 5.5 million tons. The number of cities producing CO beyond the standard has been reduced (减少) from 40 to 9. Although serious problems still remain and need to be dealt with, the world is a safer and healthier place. A kind of “green thinking” has become part of practices.

Great improvement has been achieved. In 1988 there were only 600 recycling programs; today in 1995 there are about 6,600. Advanced lights, motors, and building designs have helped save a lot of energy and therefore prevented pollution.

Twenty-five years ago, there were hardly any education programs for environment. Today, it’s hard to find a public school, university, or law school that does not have such a kind of program. “Until we do that, nothing else will change!” says Bruce Anderson.

1.According to Anderson, before 1970. Americans had little idea about ________.

A.the social movement B.recycling techniques

C.environmental problems D.the importance of Earth Day

2.Where does the support for environmental protection mainly come from?

A.The business men. B.Common people.

C.Government officials. D.University professors.

3.What have Americans achieved in environmental protection?

A.They have cut car emissions to the lowest.

B.They have solved their environmental problems.

C.They have lowered their CO levels in forty cities.

D.They have reduced pollution by taking active actions.

4.What does the underlined word “emissions” mean in the passage?

A.热量 B.尾气 C.燃油 D.污染

5.What is especially important for environmental protection according to the last paragraph?

A.Education. B.Planning. C.Green living. D.Green thinking.

练习册系列答案
相关题目

From red apples and yellow lemons to blueberries and green melons, fruit comes in many different colors. 1..

According to Lu Wei from the Chinese Academy of Sciences, fruit colors actually come from their different pigments(色素).These pigments appear differently, depending on the fruit's environment. 2..

To find out how environment influences fruit colors, Chinese scientists studied more than 280 different fruit colors. They found that red fruit usually grow in cooler places. And instead of just growing in one place, you can find them growing in many places around the world. 3.. These fruits grow a lot in just one certain area. The scientists also found that the closer the fruit is to the equator(赤道), the darker its color will be.

4.. Animals eat fruit and drop the seeds(种子)in other places later. This helps the fruit spread and grow in different places. Therefore, in order to attract animals, some fruit develop colors that are easy for animals to see.

However, animals see colors in a different way.5.. For example, birds can see red more easily than humans can. Therefore, there is more red fruit in areas where birds live. The lemurs(狐猴)of Madagascar are red-green color-blind. Many yellow fruit can be found there, as they can easily see this color.

阅读短文,把A~E五个句子填入文中空缺处,使短文内容完整。

A. Blue and purple fruit mostly grows in warm places.

B. Fruit needs to develop colors that are suited to animals' visual(视觉的)abilities.

C. Why do different kinds of fruit have so many colors?

D. Animals have also had an influence on fruit colors.

E. This causes the fruit to turn a certain color.

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网