1、　　Many people use wood stoves and fireplaces to heat their homes.Scientists have become worried about the smoke that they give off.Harmful chemicals are in the smoke.The smoke is causing air pollution.The pieces of pollution, called soot, are floating in the air.They are too tiny to see.Scientists must use a microscope to see them.

　　Small amounts of soot are safe, but large amounts can be dangerous.The govenment wants to limit this kind of pollution.It may stop people from using their fireplaces.

　　The air is tested every day.When soot levels are high, more than 65 micrograms of soot per cubic meter, factories must stop making smoke.The government thinks that limit should be much lower.

　　Factories produce the most smoke and soot.But the government thinks that all types of burning should be limited.The soot levels from factories and homes could be limited.Home owners may have to install new wood stoves that they comply with the new law.Or, they may not be able to bum on days when the air quality is bad.

　　Residents of some towns are fined if they violate the burning ban.Scientists hope these new regulations will make the air cleaner and less harmful to breathe.

　　[單選題]Why is it dangerous to burn too much wood?

　　A.The fire could burn yo

　　B.It's not healthy to be too war

　　C.Harmful chemicals are released in the so

　　D.The smoke is filled with see able tiny piece

　　[答案]C

　　[解析]第一段。燃燒木材，排放出煙。煙中存有肉眼看不見的顆粒。這些顆粒是有害的化學(xué)物質(zhì)。燃燒越多的木材，產(chǎn)生的煙就越多，釋放的有害化學(xué)物質(zhì)的顆粒也就越多。所以，燃燒過多的木材是危險(xiǎn)的。

　　[單選題]What could home owners do to comply with the new regulation?

　　A.Write a letter

　　B.Ask for permission

　　C.Use more electricity

　　D.Install new low-soot fireplaces

　　[答案]D

　　[解析]第二、三、四段。政府認(rèn)為應(yīng)當(dāng)限制煤煙的排放量，以減少空氣中的污染顆粒。工廠是排放煤煙最多的地方，應(yīng)當(dāng)加以限制。但政府認(rèn)為，住宅也應(yīng)受此限制，減少煤煙的排放。新的法律規(guī)定住宅必須安裝新型的低煙壁爐，否則，在污染比較嚴(yán)重的時(shí)期，這些住戶是不能使用他們的壁爐的。

　　[單選題]What happens to some residents who bum too much wood?

　　A.They could lose their homes

　　B.They pay for the punishment

　　C.They get sick from the smoke

　　D.The fire could get out of control

　　[答案]B

　　[解析]見第五段。在有些城鎮(zhèn)，如果居民違反燃燒法規(guī)是會(huì)受到罰款的。

　　[單選題]Why is the air quality tested every day?

　　A.Just in case someone ask

　　B.Scientists like to take test

　　C.Scientists are not very bus

　　D.To keep track of pollution level

　　[答案]D

　　[解析]見第三、四段�？茖W(xué)家每天檢測，空氣中這種有害顆粒的密度。如果密度高于65毫克/立方米(科學(xué)家認(rèn)為這個(gè)標(biāo)準(zhǔn)還應(yīng)下調(diào))，工廠應(yīng)停止排煙，住宅應(yīng)停止燃燒壁爐，如果住宅沒有安裝新型低煙壁爐的話。

　　2、

　　At the first sight the planet Mars does not appear very welcome to any kind of life.It has very little oxygen and water, the temperature at night is below -50~Cand winds of 100 miles per hour cause severe dust storms.However, the surface of the planet seems to show that water flowed across it some time in the past, and it is believed that there is enough ice at the poles to cover the planet with water if it melts.Although there is no life on the Mars now, some scientists think that there may have been some form of life long time ago.At that time, the planet had active volcanoes; the atmosphere was thicker and warmer; and there was water.In fact, in some ways the Mars may have been similar to the Earth, where life exists.

　　Some people believe that the Mars could support life in the future if the right conditions were produced.The first step would be to warm the planet using certain gases which trap the Sun's heat in the planet's atmosphere.With warmth, water and carbon dioxide (二氧化碳), simple plants could begin to grow.These plants could slowly make the Mars more suitable for living.It is estimated that the whole process might take between 100,000 and 200,000 years.In the meantime, people could begin to live on the planet in special closed environments.They would provide a lot of useful information about conditions on the Mars and the problems connected with living there.

　　[單選題]Some scientists think there may have been life on the Mars in the past because __.

　　A.there is no life there now

　　B.there is a large amount of water at the poles

　　C.the Mars may be able to support life in the future

　　D.conditions may have been similar to those on the Earth

　　[答案]D

　　[解析]第一段大意是：人們最初對(duì)火星的印象是火星上不可能有生命。因?yàn)閹缀鯖]有氧氣和水，并且夜間溫度低于-50°C，同時(shí)還有每小時(shí)100英里的風(fēng)速引起的嚴(yán)重的沙塵暴。然而星球的表面卻告訴我們，過去的某個(gè)時(shí)段水曾經(jīng)從這里流過。人們相信極地有足夠的冰，一旦融化便可覆蓋整個(gè)星球。雖然現(xiàn)在火星上沒有生命，但在過去很久很久以前，生命很有可能存在過。由此可看出，生命所需的條件——水和氧——在火星上和在地球上是相似的。所以選項(xiàng)D正確。而選項(xiàng)B說火星上有水是不對(duì)的。火星的極地有冰，只有當(dāng)冰融化后才能使整個(gè)星球有水。

　　[單選題]There could be life on the Mars in the future if

　　A.it supported life in the past

　　B.certain gases are used to cool the planet

　　C.the atmosphere can be heated enough to grow simple plants

　　D.the planet's volcanoes become as active as they were in the past

　　[答案]C

　　[解析]第二段大意是：如果要想改變火星的條件使之適合居住，首先要提高星球的溫度，其方法是用某些氣體收集太陽的熱能。有了溫度、水和二氧化碳，一些植物便可生長。慢慢地使星球適合生存。選項(xiàng)C，“人們可以以提高環(huán)境的溫度的方式來使一些植物生長”是正確的。

　　[單選題]The author's attitude towards the possibility of life on the Mars in the future is __.

　　A.doubtful

　　B.positive

　　C.negative

　　D.uninterested

　　[答案]B

　　[解析]根據(jù)全文可以判斷，作者對(duì)人類在火星上生存的可能性抱著積極、樂觀的態(tài)度。

　　[單選題]Which is the best title for this passage?

　　A.The Possibility of Life on the Mars

　　B.Future Conditions on the Mars

　　C.The Mars and the Earth

　　D.A Study of the Climate of the Mars

　　[答案]A

　　[解析]文章的標(biāo)題就是文章的中心。作者從火星上曾經(jīng)有過生命的證明談到未來通過提高溫度而使火星適合生存的設(shè)想，表明文章的中心是：火星具有生命存在可能性。

　　3、

　　Laura was married for 6 months.Her husband was using drugs.She didn't want her son or her unborn baby to live that way, but she was afraid to ask her husband to leave.She left him a note instead.After reading the note, Laura's husband waited for her to come home and then beat her and her son.

　　Laura had little education and she never had a good paying job.She was ashamed to ask for help from the police, courts or women's shelters.Sometimes her husband was very nice to her.She decided to try harder so her children could have a home and a father.Laura joined a church and told a priest about her problem.

　　But her husband kept using drugs and hurting the family.Finally, she told her husband she loved him, but they should live apart for a while.He beat her again.The priest came over to talk to her.He asked the husband to go out for a while.Laura packed up her things and left home with her son.The next day she lost the baby.Her husband went to jail.

　　Laura got a lot of help from groups that help women who have been beaten.Now she is in college, has her own apartment and works on special projects at a women's shelter."We got out, and it changed life for me and my child.You can do it.You can break the cycle," Laura said.

　　[單選題]The message Laura left her husband was most likely “__ ”.

　　A.Do not beat the kid any more

　　B.Learn to take care of the family

　　C.Leave me and my children

　　D.Be a good father

　　[答案]C

　　[解析]見這篇短文涉及家庭暴力的問題。第一段講到Laura結(jié)婚六個(gè)月了。她丈夫吸毒。她不希望自己的兒子或者未出世的孩子過這樣生活。她很害怕她的丈夫，不敢直接攆她的丈夫出門，只好給她的丈夫留了一張字條。由此判斷，字條上寫的是要求她的丈夫離開這個(gè)家。

　　[單選題]Which of the following statements is TRUE?

　　A.Laura has two children

　　B.Laura never got any joy

　　C.Laura's husband got punished

　　D.Laura got little help from the society

　　[答案]C

　　[解析]第三段提到她在遭到丈夫的毆打之后失去了還未出生的孩子。因此她只有一個(gè)孩子。選項(xiàng)A錯(cuò)誤。第二段提及她沒有得到過高工資的工作，并不意味著她沒有工作。選項(xiàng)B錯(cuò)誤。第三段提到她失去孩子之后，她的丈夫進(jìn)了監(jiān)獄。因此，選項(xiàng)C正確。最后一段提到她得到了社會(huì)上的很多幫助，還進(jìn)了大學(xué)。所以，選項(xiàng)D錯(cuò)誤。

　　[單選題]Laura didn't go to the police or courts because __.

　　A.she was afraid of being laughed at

　　B.the priest asked her not to do so

　　C.her husband was a nice guy

　　D.she was not well-educated

　　[答案]A

　　[解析]從第二段可知，她沒有受過什么教育，也從來沒有過像樣的工作。她的思想還是比較封閉的。因此她認(rèn)為向警察、法院以及婦女避難所尋求幫助是件羞恥的事。

　　[單選題]Which of the following would be the best title for the passage?

　　A.Husband-Wife Relationship

　　B.Women's Rights

　　C.Laura's Marriage

　　D.Family Violence

　　[答案]D

　　[解析]整篇文章講的是丈夫吸毒并對(duì)妻子、孩子使用暴力。因此，“家庭暴力”應(yīng)是最合適的標(biāo)題。

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