任务型阅读

       Most of us are worried about global warming(全球变暖).It is a very serious problem all over

the world. People began to keep the temperature records in 1850. 2009 was the fifth warmest year

since 1850.ln the May of 2009, India experienced a heat wave. In the June of 2009, north China also

experienced a heat wave. Warmer weather happens more often than before around the world. There

are natural reasons and human reasons for global warming. Most scientists believe that global warming

is mainly because of human activities. The use of fuel（燃料）is one of the human reasons. Cutting

down trees is another big reason.We should try to stop global warming. In order to do that, we should

plant more trees and try to use fewer cars.When we go out, we can take a bus or ride a bike. If there

are fewer cars, fuel use will be less. Everyone in the world should do their best to improve the

environment.

1. When did the keeping of temperature records begin?

2. Was 2009 the warmest year since people began to keep the temperature records?

3. Which country experienced a heat wave in the June of 2009?

4. What do most scientists think are the main reasons for global warming?

5. What should we do to stop global warming besides planting more trees?