Ⅰ.阅读理解
Global warming can lead to rising sea levels, extreme weather events and changes in precipitation (降雨量)．Global warming can also affect agriculture and glacier melt and can facilitate (促进) the spread of disease and the extinctions of species.So, it is necessary to prevent global warming.But how to do it?
Many countries have been working to reduce greenhouse gas emission (排放) to prevent global warming.Driving an energyefficient car can help to prevent global warming because hybrid cars can run on gas and electricity.The average hybrid can save 16,000 pounds of carbon dioxide a year! Also, do not use hot water if we do not need to, like when doing laundry.And take care with our appliances.Unplug them when we do not use them.In order to prevent global warming, we should get energysaving light bulbs.And we can help to prevent global warming if we buy recycled products, also try donating or selling instead of throwing away.Besides, we can try buying products with less packaging.Buying in bulk can mean less packaging and less money being spent.What is more, we can plant trees.Not only do they suck up carbon dioxide, but also they provide cleaner air and save 2,000 pounds of CO2 a year.
Students showed that manmade influences are adding to cycle considerably.So, how to prevent global warming? Many ways are also being pushed upon society.Turn the lights off, turn the TV off, walk to the shop, and buy a green car.But can all these little things actually add up to make a difference? Or do we need to put pressure on the corporations.This is where the real emissions are coming from.Yes of course we need to do all the little things ourselves.
Once again, how to prevent it? We need our government to implement (落实) emergency laws, use the power of media to influence those who are not awake or are too stubborn or selfish to do anything about it.We need to take a stand now.
In a word, there are many ways to prevent global warming and we can stop global warming if we take action on it.
文章大意： 本文主要告诉我们，我们应该做点什么来防止地球变暖。
1．It can be concluded from the first paragraph that__D__.
A．sea levels will rise when earth temperature is up to 50 ℃
B．the extinctions of species are mainly due to human's activities
C．extreme weathers and glacier melts are all natural events
D．global warming can bring about many bad influences
解析：推理判断题。由第一段中“Global warming can lead to rising sea levels, extreme weather events and changes in precipitation (降雨量)．Global warming can also affect agriculture and glacier melt and can facilitate the spread of disease and the extinctions of species.”可知，全球变暖会造成很多糟糕的影响和后果。故选D正确。
2．Which is not the behavior to help to prevent global warming？__D__
A．Drive an energyefficient or hybrid car.
B．Buy recyclable things with less packaging
C．Unplug appliances when they aren't being used.
D．Avoid using energysaving light bulbs.
解析：事实细节题。根据第二段的“In order to prevent global warming, we should get energysaving light bulbs.”可知D项与之相反。故选D。
3．We can infer from the passage that__B__.
A．global warming can be stopped by selfless students
B．the human has an increasing impact on the environment
C．the real emissions are from human's activities at night
D．some people are too stubborn to be persuaded to take action
解析：推理判断题。根据第三段首句“Students showed that manmade influences are adding to cycle considerably.”可推断出B项正确。其他选项均与原文不符。
4．In writing this passage, the author mainly intends to__A__.
A．appeal to us to take action at once to prevent global warming
B．ask us to plant trees which can give fresh air and absorb CO2
C．require us to pay more attention to the changes in weather
D．expect us to work hard to reduce greenhouse gas emission
解析：推理判断题。根据文章最后一段“In a word, there are many ways to prevent global warming and we can stop global warming if we take action on it.”可推断出A。
5．Which of the following can be the best title for the passage？__C__
A．It is necessary to prevent global warming.
B．Doing little things can make a difference.
C．How to prevent global warming.
D．How to stop the rising sea levels.
解析：标题归纳题。第一段的最后两句“So, it is necessary to prevent global warming.But how to do it？”便是主题句。把两个句子综合起来就是答案C。
