Global warming happens when greenhouse gases trap heat and light from the sun in the earth’s atmosphere, which increases the temperature. This is like when heat is trapped in a car. On a hot day, the car gets hotter when it is out in the parking lot. This is because the heat and light from the sun can get into the car, by going through the windows，but it can’t get back out. This is what the greenhouse effect does to the earth .The heat and light can get through the atmosphere, but it can’t get out As a result，the temperature rises.
Sometimes the temperature can change in a way that helps us. The greenhouse effect makes the earth appropriate for people to live on Without it，the earth would be freezing，or it would be burning hot. It would be freezing at night because we would not get the sun’s heat and light .During the day, especially during the summer, it would be burning because the sun would be up with no atmosphere to filter(過濾)it，so people，plants，and animals would be exposed to all the light and heat.
Although the greenhouse effect makes the earth able to have people living on it，if there gets to be too many gases，the each can get unusually warmer, and many plants，animals．a(chǎn)nd people will die. Plants would die because they would not be able to take the heat .This would cause us to have less food to eat, and it would also limit the food that animals have. With less food for the animals that we need to survive we would even have less food. Gradually, people，plants，and animals would all die of hunger．
People are doing many things to try to stop global warming .One thing is carpooling—driving with someone to a place that you are both going to. Another thing is being more careful about leaving electrical devices turned on. Now, more people are even riding buses or bikes to lower the amount of greenhouse gases in the air .Although adults do many things to help stop global warming, kids call do just as much.
【小題1】By the example given in Paragraph l, the author wants to__________.

A．explain how global warming happens
B．show his feeling in a car in hot summer
C．tell us cars are causes of greenhouse gases
D．say that I there are greenhouse gases in every car
【小題2】The underlined word ‘it” in Paragraph 2 refers to__________.
A．lightB．greenhouse effectC．temperatureD．heat
【小題3】What is the effect of atmosphere?
A．IT only traps the heat of the sun.
B．It does great harm to humans.
C．It makes the earth neither to hot nor too cold.
D．It prevents all the light from the sun shining on the earth.
【小題4】What is the main idea of the third paragraph?
A．lf there is greenhouse effect．a(chǎn)ll the plants will die
B．Human beings are likely to disappear from the earth
C．Crops can ′t take in the heat lf there is greenhouse effect
D．Although greenhouse effect is necessary．Too much of it will cause us to die.
【小題5】What will the author most probably discuss in the paragraph that follows?
A．What kids can do to help stop global warming.
B．Who should be responsible for the environmental problems.
C．What global warming is doing to the environment.
D．Why cars and buses pollute the air a lot


【小題1】A
【小題2】B
【小題3】C
【小題4】D
【小題5】A

解析試題分析：文章大意：文章主要講述溫室效應(yīng)產(chǎn)生的原因以及溫室效應(yīng)對(duì)人類的利和弊。
【小題1】細(xì)節(jié)理解題。根據(jù)文章第一段作者給出淺顯易懂的例子，其目的是給讀者解釋全球變暖的原因。故A正確。
【小題2】詞義推測(cè)題。根據(jù)文章第二段it的前一句The greenhouse effect makes the earth appropriate for people to live on可知此處的it代指greenhouse。故B正確。
【小題3】細(xì)節(jié)理解題。根據(jù)文章第二段Without it，the earth would be freezing，or it would be burning hot.可知大氣使得地球不熱也不冷。故C正確。
【小題4】主旨大意題。根據(jù)文章第三段首句Although the greenhouse effect makes the earth able to have people living on it，if there gets to be too many gases，the each can get unusually warmer, and many plants，animals．a(chǎn)nd people will die.可以得出答案。故D正確。
【小題5】推理判斷題。根據(jù)文章最后一段的最后一句Although adults do many things to help stop global warming, kids call do just as much.可以推測(cè)出下一段要寫的內(nèi)容。故A正確。
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科目：高中英語 來源： 題型：閱讀理解

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Vocabulary
1.revise          改變
2.fabric          結(jié)構(gòu)
3.catalyze          催化，加速
4.sort out          把……分門別類，揀選
5.omnibus          公共汽車/馬車
6.trolley          （美）有軌電車，（英）無軌電車
7.periphery       周圍，邊緣
8.sprawl          建筑物無計(jì)劃延伸，蔓延，四面八方散開
9.lot          小片土地
10.underscore       強(qiáng)調(diào)，在下面劃?rùn)M線
11.transit lines       運(yùn)輸線路
12.subdivision       （出售的）小塊土地，再劃分小區(qū)

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A．man are smarter then women
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科目：高中英語 來源： 題型：閱讀理解

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C．Concentrated.D．Puzzled.
【小題3】The underlined word renders in Paragraph 1 probably means ________.
A．preventsB．causes
C．protectsD．sharpens
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科目：高中英語 來源： 題型：閱讀理解

Have you ever wondered why birds sing? Maybe you thought that they were just happy．After all，you probably sing or whistle when you are happy．
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【小題1】Some scientists believe that most of the time birds’singing is actually   ．

A．a(chǎn) way of warning B．a(chǎn)n expression of happiness
C．a(chǎn)n expression of anger D．a(chǎn) way of greeting
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【小題3】Why do birds keep on singing at nesting season?
A．Because they want to invite more friends
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C．Because their singing helps frighten outsiders away．
D．Because their singing helps get rid of their fears．
【小題4】How does the writer explain birds’ singing?
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