问题补充：
The Earth has warmed by about half a degree（0.50℃）over the last 100 years. It could be getting warmer on its own, but many scientists think that people are making the Earth warmer by making a greenhouse effect. The greenhouse effect is important. Without it, the Earth would not be warm enough for us to live on. But just a little warmer than it is now could cause problems for humans, plants and animals.
Many of the things we do every day can change the Earth’s temperature by sending greenhouse gases into the air. We send greenhouse gases into the air when we watch TV, turn on lights, dry hair, play video games, wash or dry our clothes or drive cars. The rubbish from factories and homes also produces greenhouse gases.
Even a small change in temperature can affect our weather. This can cause changes in the sea levels, the air, flooding, and our fresh water.
The change in the temperature can also cause changes in the living places for animals and plants, endangering many animals.
Global warming is a big problem, and every little bit we do can help. We can save electricity. We can save energy in other ways such as by taking buses or walking rather than driving cars. We can recycle to reduce the rubbish and save natural resources such as trees, oil and metals. We can buy products that don’t do bad to the environment and we can turn to solar energy. Remember the little bit that you do will bring a better world.
【小题1】 Which of the following does not send greenhouse gases into the air?A．Watching TV.B．Turning on a light. C．Driving a car.D．Walking to school.【小题2】 In this passage, the scientists are mainly trying to make the readers realize .A．the greenhouse effect is important B．humans are making the earth warmerC．the earth is getting warmer in 100 yearsD．the earth could be getting warmer by itself【小题3】 Without the greenhouse effect，we would .A．be safer B．not be able to liveC．have a cleaner earthD．have a better world【小题4】 The writer gives us advice on how to save energy in .A．Paragraph 2B．Paragraph 3C．Paragraph 4D．Paragraph 5【小题5】 Global warming is a big problem but .A．we can do anything to helpB．we don need to do anythingC．we can do something to helpD．we can do something to stop itD
答案：
(答案→)D
解析：本文主要讲述人们通过温室效应使地球更温暖。在我们的日常生活中如当我们看电视、开灯、吹干头发、玩电子游戏、洗或甩干我们的衣服或者是开车的时候，我们把二氧化碳输送到大气中。全球变暖是一个大问题，一定要引起我们人类的重视。
【小题1】细节理解题。根据We send greenhouse gases into the air when we watch TV, turn on lights, dry hair, play video games, wash or dry our clothes or drive cars（当我们看电视、开灯、吹干头发、玩电子游戏、洗或甩干我们的衣服或者是开车的时候，我们把二氧化碳输送到大气中。）可知，本题选D。
【小题2】细节理解题。根据people are making the Earth warmer by making a greenhouse effect（人们通过温室效应来时地球更温暖）可知，本题选B。
【小题3】细节理解题。根据Without it, the Earth would not be warm enough for us to live on（没有它，地球将不够温暖以致我们不能居住）可知，本题选B。
【小题4】细节理解题。根据We can save energy in other ways such as by taking buses or walking rather than driving cars（我们可以用其他方式来节约能量，例如坐公共汽车或者步行，而不是开汽车）可知，本题选D。
【小题5】细节理解题。根据Global warming is a big problem, and every little bit we do can help（全球变暖是一个大问题，我们做的每一点可以帮助）可知，本题选C。
