单选题{{B}}Text 2{{/B}} There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automobile traffic. At present, we realize that although these are the areas with the worst air pollution, the problem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the east of the United States and brought health warnings in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be infected by air pollution. Some scientists consider that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels (coal and oil)is creating a "greenhouse effect"--conserving heat reflected from the earth and raising the world's average temperature. If this view is correct and the world's temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be in water. Another view, less widely held, is that increasing particular matter in the atmosphere is blocking sunlight and lowering the earth's temperature--a result that would be equally disastrous. A drop of just a few degrees could Create something close to a new ice age, and would make agriculture difficult or impossible in many of our top farming areas. Today we do not know for sure that either of these conditions will happen (though one recent government report drafted by experts in the field concluded that the greenhouse effect is very possible). Perhaps, if we are lucky enough, the two tendencies will {{U}}offset{{/U}} each other and the world's temperature will stay about the same as it is now. Driven by economic profit, people neglect the damage on our environment caused by the "advanced civilization". Maybe the air pollution is the price the human beings have to pay for their development. But is it really worthwhile?

单选题[Al be said [B] was said [C] is being said [D] had been said

单选题IQuestions 18～21 are based on the following dialogue./I

单选题{{B}}Text 3{{/B}} You may come into an empty office after you are told that the school principal is expecting you in her office; you may be called at the last minute to come to class after you were told that the class is cancelled for the teacher's illness; you may even be given a loving letter, and then find out later it is written by some of your best friends, what is wrong? Nothing, it's just April 1st. We all know April 1st can also be called April fool's Day. But do you know where it came from? Do you know this day used to be a nation's New Year? This is the case in France in sixteenth-century, which, when you think about it, may make more sense, for April is the time when spring returns. And the idea of beginning a year with spring would so easily be understood. The celebration for the New Year is pretty much the same as it is today. People hold and join all sorts of parties, singing and dancing into the late night. Then in 1562, a new calendar was introduced by Pope Gregory for the Christian world. And the New Year began to be celebrated on January first. For any nation, the celebration of New Year is something that can not be replaced by other occasions. And the change of the New Year's date would not be accepted in an easy way. That's also why some people chose not to believe it when hearing the news. So they insist to celebrate New Year on April first, others played tricks on them and called them April fools. Americans play small tricks on friends and strangers in a similar way on the first of April. One commonly-played trick is pointing down to a friend's shoe and saying, your shoelace is untied. And the examples we mentioned at the beginning of our passage is among the limitless ways for children to play tricks on their classmates, friends and so on. Most April fool jokes are in good fun and not meant to harm anyone. The cleverest April fool joke is the one where everyone laughs, especially the person upon whom the joke is played.

单选题Questions 14-17 are based on the following dialogue.

单选题Whyisthebiologicalprojectintrouble?A.Itistoodifficult.B.Itmustn'tbeawin-winsituation.C.Themanandhiscolleaguehavedifferentideas.D.Thewomandoesn'twanttocompromise.

单选题What does "them" refer to in the sentence "It sent them streaming westward into the wilderness after their predecessors to raise still more children who wanted still more land" ?

单选题

单选题Whatdoesthepassagesayaboutthesecondhandsmoke?

单选题The Government has almost doubled its spending on computer education in schools. Mr. William Shelton, junior Education Minister, announced that the Microelectronics education Programm (MEP) is to run for two more years with additional funding of at least ￡ 9 million. The programme began in 1980, was originally due to end next year, and had a budget of ￡ 9 million. This has been raised in bits and pieces over the past year to ￡ 11 million. The programme will now run until March 1986, at a provisional cost of around ￡ 20 million. MEP provides courses for teachers and develops computer programme for classroom use of personal computers. It is run in partnership with a Department of Industry programme under which British-made personal computer are supplied to schools at half-price. In that way, virtually every secondary school has been provided with at least one computer at a central cost to the taxpayer of under ￡ 5 million. The primary schools are now under way at the turn of the year. But, as Mr. Shelton admitted yesterday: "It"s no good having the computers without the right computer programmes to put into them and a great deal more is still needed." Hence, MEP"s new funds. Mr. Shelton said yesterday that MEP"s achievements in curriculum development and teacher training had shown that the computer could be used in all courses. About 15,000 secondary teachers have taken short courses in "computer awareness" —that is a necessary part of the half-price computer offer—and training materials are now being provided for 50,000 primary teachers. The reasoning behind MEP is that no child now at school can hope for a worthwhile job in the future economy unless he or she understands how to deal with computers —not in vocational training sense, but in learning the general skill to extract the required information of the moment from the ever-spreading flood.

单选题A censor's duty is______.

单选题The word "imperative" in the first paragraph most probably refers to something ______.

单选题whatarethespeakerstalkingabout?

单选题{{I}}Questions 11 - 13 are based on the following dialogue between Joseph's mother and his teacher.{{/I}}

单选题 {{I}}Questions 15 to 18 are based on the conversation you have just heard.{{/I}}

单选题Whatinformationdidthemanhearfromthebroadcast?A.Theplaneisgoingtotakeoff.B.TheplaneisarrivinginBeijing.C.ItiscloudyinBeijing.D.Thewomanisonherhoneymoon.