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.
小題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.
小題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 warmer
C．the earth is getting warmer in 100 years
D．the earth could be getting warmer by itself
小題3: Without the greenhouse effect，we would _____________ .
A．be safer B．not be able to live
C．have a cleaner earthD．have a better world
小題4: The writer gives us advice on how to save energy in __________ .
A．Paragraph 2B．Paragraph 3
C．Paragraph 4D．Paragraph 5
小題5: Global warming is a big problem but ___________ .
A．we can't do anything to helpB．we don't need to do anything
C．we can do something to helpD．we can do something to stop it

小題1:D
小題2:B
小題3:B
小題4:D
小題5:C

試題分析：本文主要講述人們通過溫室效應(yīng)使地球更溫暖。在我們的日常生活中如當(dāng)我們看電視、開燈、吹干頭發(fā)、玩電子游戲、洗或甩干我們的衣服或者是開車的時(shí)候，我們把二氧化碳輸送到大氣中。全球變暖是一個(gè)大問題，一定要引起我們?nèi)祟惖闹匾暋?br />小題1:細(xì)節(jié)理解題。根據(jù)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（當(dāng)我們看電視、開燈、吹干頭發(fā)、玩電子游戲、洗或甩干我們的衣服或者是開車的時(shí)候，我們把二氧化碳輸送到大氣中。）可知，本題選D。
小題2:細(xì)節(jié)理解題。根據(jù)people are making the Earth warmer by making a greenhouse effect（人們通過溫室效應(yīng)來(lái)時(shí)地球更溫暖）可知，本題選B。
小題3:細(xì)節(jié)理解題。根據(jù)Without it, the Earth would not be warm enough for us to live on（沒有它，地球?qū)⒉粔驕嘏灾挛覀儾荒芫幼。┛芍�，本題選B。
小題4:細(xì)節(jié)理解題。根據(jù)We can save energy in other ways such as by taking buses or walking rather than driving cars（我們可以用其他方式來(lái)節(jié)約能量，例如坐公共汽車或者步行，而不是開汽車）可知，本題選D。
小題5:細(xì)節(jié)理解題。根據(jù)Global warming is a big problem, and every little bit we do can help（全球變暖是一個(gè)大問題，我們做的每一點(diǎn)可以幫助）可知，本題選C。
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