Damage to Ozone layer Gets Worse

　 In the middle of winter, when snow is falling in many parts of the United States, scientists have sounded a warning to people who plan to spend many hours in the sun this summer. The warning is: The sun’s summertime rays are more dangerous than once thought.

　 A team of scientists from 80 nations recently reported to the United Nations that a layer of ozone (臭氧层) in the atmosphere, which protects humans from harmful levels of ultraviolet（紫外线） radiation, will be thinner over the United States this summer. The thinner layer allows more ultraviolet rays from the sun to reach Earth. The extra amount of ultraviolet radiation could cause an increase in the number of cases of skin cancer.

　 Scientists first became concerned about the ozone layer in the mid-1980s when a hole was discovered in the layer above Antarctica during the winter. The hole was caused by chemicals used in refrigerators and air conditioners. When these chemicals are sent out into the atmosphere, they produce gases that destroy the ozone.

　 Concern about the protective ozone layer rose more recently when data(数据) from satellites and ground stations showed that ozone levels were dropping over areas other than Antarctica. Low ozone levels were recorded in the spring and summer over the United States and over other populated areas in the world.

　 Although many countries have already begun stopping the use of ozone destroying chemicals, the new findings are expected to advance the timetable for a total ban(禁止) of the chemicals.

1.The scientists have observed the ozone layer_____.

A. since 1980　　　　　　 B. since last winter　　　

C for about 20 years　　　 D. for about one year

2. The ozone layer in the atmosphere can _____.

A.    do a lot of good to human beings in many ways.

B.    protect humans from diseases caused by bad weather.

C.    do a lot of harm to human beings in the summer-time.

D.    protect humans from harmful levels of ultraviolet radiation.

3. Scientists first found that there was a hole in the ozone layer_____.

A.       above Arctic during the winter in the mid-1980s

B.       above Antarctica during the winter in the mid-1980s

C.       over somewhere in the north of the equator in 1980

D.       over the U.S.A in the summertime in the mid-1980s

4.The damage to the ozone layer was caused by_____.

A.       the changeable weather

B.       ozone-destroying chemicals

C.       chemicals from refrigerators

D.       chemicals from air conditioners

In peace，too，the Red Cross is expected to send help　　　　 there is human suffering.?

A.whoever　　　　 B.however?　　　　 C.whatever　　　 D.wherever

----I think he is taking an active part in social work.

　 ----I agree with you_____.

A. in a way　　　 B. on the way　　 C by the way　　　 D. in the way

假如你是李明, 昨天下午你们的班长组织全班同学就“春节燃放鞭炮的利与弊”进行了讨论, 结果看法不一。请你就下面所提供的信息, 给某报社编辑写封信, 说明你们就此问题的讨论情况并征求报社编辑的意见。

　 一些同学认为：燃放鞭炮是中国的文化传统, 它可以除邪并增加节日的欢乐气氛。

　 另一些同学认为：燃放鞭炮不仅造成噪声和环境污染, 而且还可能对人身及财产造成危害。

注意：

　 1. 信的开头已写好, 不计入总词数。

　 2. 词数在120左右。

　 3. 参考词汇：燃放鞭炮set off firecrackers;

　 传统tradition; 邪恶 evil; 财产property。

Dear Editor,

　 Yesterday afternoon our class had a discussion on. . .

_______________________________________________________________________________________________________________________________________________________

与众人所认为的相反，澳大利亚全然不是一个乏味的地方。（contrary to）

Mike lost the pen___________ he paid 10 yuan.

A. to which　　 B. which　　　　 C. for that　　　 D. for which

A few days after the interview．I received a letter 　　　me admission to the university.

A．offering　 　　　　　　　　　　 B．offered　 　

C．having offered 　　　　　　　　 D．to be offered

The meeting ______ tomorrow afternoon is about _______ rid of pollution.

A. held, to get 　 B. to be held; getting

C. to hold; to get 　 D. being held; getting