Question

Our factories and homes burn coal and oil. Every year we have forest fires somewhere. Many scientists believe that the climate is changing.

The earth will perhaps be warmer by about 7 degrees centigrade. At the South Pole and the North Pole, the ice will melt (融化). The sea level (海平面) will rise by about 7meters. As a result, water will cover cities like London, Tokyo and New York. Some ports and towns along the coasts will disappear under water.

Some other scientists think that the dust, smoke and pollution from coal, wood and oil fires will block out the sunrays(紫外线). Then the earth will become colder and great sheets of ice will cover Europe and North America.

When chemicals in the air mix with rain, we have acid (酸) rain. Acid rain can bring us great harm. It destroys forests and kills life in lakes and rivers.

People are beginning to see how serious the problem is. They find it important to work with nature instead of against it. They are trying to save the earth in many different ways. But one of the most important things to do is to make people understand that saving the earth is saving ourselves.

1.Some scientists believe that         .               

A. the earth is growing warmer

B. we can find oil in our forests

C. we have to burn down the forests every year

2.Ice at the poles will         if the earth gets warmer.

A. cover cities like London and Tokyo

B. raise the sea level by 7 degrees

C. become water and make the sea level rise                

3.Acid rain         .

A. brings great changes in our climate

B. kills pests in lakes and forests

C. kills the fish in rivers and lakes                        

4.What can we learn from the third paragraph?

A. The dust together with pollution from coal, wood and oil fires will bring us more heat from the sun.

B. The sunrays will come more because of the dust and pollution from fires.

C. As a result of the dust and pollution from coal, wood and oil fires, the earth will become colder.                                                                  

5.Which statement is TRUE?

A. People have come to know the importance of working with nature.                

B. All the scientists agree that our earth is sure to become warmer and warmer.

C. The sea level will rise if the earth gets colder.

Answer

1.A

2.C

3.C

4.C

5.A

【解析】

试题分析：有些科学家认为石油，煤炭等的燃烧将会使地球变暖，导致两极冰川融化，海平面上升，有的城市将被淹没。而另一些科学家则认为燃烧产生的气体会伤害大气层，导致地球变冷。不论怎样，人类都已经意识到问题的严重性，已经知道了跟自然和谐相处的重要性。呼吁大家为我们自己的生存保护地球。

1.根据原文Many scientists believe that the climate is changing.The earth will perhaps be warmer.可知科学家认为地球将变暖。故选A。

2.根据原文At the South Pole and the North Pole, the ice will melt (融化). The sea level will rise by about 7meters.可知南北极的冰雪融化导致海平面上升。故选C。

3.根据原文Acid rain can bring us great harm. It destroys forests and kills life in lakes and rivers.可知酸雨能摧毁森林，杀害湖泊里的生命。故选C。

4.根据原文Some other scientists think that the dust, smoke and pollution from coal, wood and oil fires will block out the sunrays.Then the earth will become colder可知科学家认为来自燃烧煤炭，石油等产生的灰尘和烟雾会破坏大气层，地球将会变冷。故选C。

5.根据原文They find it important to work with nature instead of against it.可知人们已经意识到跟自然和谐共处的重要性了。故选A。

考点：科普环保类短文阅读。