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问答题The worst pollution threat is concentrated in and near large cities. There the people-made pollutants increasingly surpass the ability of air and water to dilute (冲淡；稀释) the contaminants (污染物) to safe levels. The natural ecological cycle depends on plants, which absorb some pollutants and release oxygen to the air. But near large cities, natural vegetation becomes scarce, and introduced trees, ornamental shrubs and gardens are far from adequate in absorbing motor vehicle and industrial air pollutants. Finally, some pollutants, most notably atomic waste, may continue to contaminate air, land, and water for thousands of years. Therefore, ecocrisis—ecocatastrophe or ecocide—has been for some time one of the major concerns of not only the ecoactivists and environmentalists, but of many scientists of other fields and the government authorities of many countries as well.
单选题The total of such areas gets divided _______ between the total number of flats per floor: the larger the number of flats per floor, the lesser is this area _______ gets added to the area of the flat.Asufficiently; whereBproportionately; thatCequally; asDadequately; when
单选题Tom: Hi, Ken. How’s it going? Ken: OK. How are things with you? Tom: Not too bad. In fact, pretty good. Did I tell you that I got a new job? Ken: No. you didn’t. Tom: ______ I heard about a job opening in another company. I applied and had an interview. Three days later someone called to tell me that I got it. Ken: ______ How do you like the job? Tom: I like it. The salary’s a bit higher than on my last job and the benefits are very good.AYou know that I was in the hospital yesterday. I’m glad to see you.BI was temporarily employed last year. ; It’s natural to hear that.CI got a promotion last week. ; How lucky you are!DWell, I was laid off last month. ; That’s good news.
问答题At the end of a banquet 10 people shake hands with each other. How many handshakes will there be in total?
问答题If you think American cooking means opening a package and tossing the contents into the microwave, think again. On the one hand, it's true that Americans thrive on cold cereal for breakfast, sandwiches for lunch and instant dinners. From busy homemakers to professional people, many Americans enjoy the convenience of prepackaged meals that can be ready to serve in 10 minutes or less. On the other hand, many Americans recognize the value of cooking skills. Most Americans will admit that there's nothing better than a good home-cooked meal.
问答题In this section, you are asked to write a composition on “Competition in a Modern Society” with no less than 140 words. Your composition should be based on the following outline given in English. 1．Some people believe that it is very necessary to encourage competition in a modern society. 2．Other people think that it is not necessary, especially in our society. 3．Your comments on these two views, and give examples to support your opinion.