单选题The atmosphere is as much a part of the earth as ______ its soils and the water of its lakes, rivers and oceans.

单选题It is ______ of this town that most houses are built with rocks and with a flat stone roof.

单选题Traveling can be fun and easy. A vacation trip to another part of the country is especially 1 when the traveling conditions are good. Good traveling conditions 2 : 1 a comfortable and familiar mode of transportation, 2 knowledge of the country"s language and system of money, 3 3 with the customs and habits of the people in the country, and 4 nice travel 4 . All of us have had nice trips 5 this. In fact, we have good 6 of an enjoyable, relaxing trip. Most of us have also had trips that we would 7 to forget. Many conditions can produce a bad 8 experience. For example, if the four conditions 9 above do not exist, we will 10 have a bad experience, or at a difficult 11 . Students who travel to another country to 12 often have a difficult trip. They 13 travel alone, they don"t know the language of the new country 14 , they are not familiar with the money system and so on. They often arrive in the new country at a huge 15 airport. From the airport, they need to 16 their way to the city where their school is. Maybe they need to 17 airplanes, to take a bus, a train, or a taxi. They need to do all this in a country 18 everything is unfamiliar: the language, the money, the people, the cities, and the weather. Later, after the experiences are over, they 19 laugh. But certainly at the 20 , they feel terrible.

单选题Scientists find that hard-working people live longer than average men and women. Career women are healthier than housewives. Evidence shows that the jobless are in poorer health than jobholders. Why is work good for health? It is because work keeps people busy away from loneliness. Researches show that people feel unhappy, worried and lonely when they have nothing to do. Instead, the happiest are those who are busy. Many high achievers who love their careers feel that they are happiest when they are working hard. Work serves as a bridge between man and reality. By work people come into with each other. By collective activity they find friendship and warmth. This is helpful to health. The loss of work means the loss of everything. It affects man spiritually and makes him ill. Besides, work gives one a sense of fulfillment and a sense of achievement. Word makes one feel his value and status in society. When a writer finishes his writing or a doctor successfully operates on a patient or a teacher sees his students grow, they are happy beyond words. From the above we can come to the conclusion that the more you work the happier and healthier you will be. Let us work hard and study and live a happy and healthy life.

单选题Let's give the room a ______ clean before we leave for our vacation. A. complete B. whole C. overall D. thorough

单选题"Cool" is a word with many meanings. Its traditional meaning is used to 1 a temperature that is fairly cold. As the world has 2 , however, the word has expanded to 3 many different meanings. "Cool" can be used to express feelings of 4 in almost anything. When you see a brand-name car in the street, maybe you can"t help 5 , "It"s cool." You might think, "He"s so cool," when you see your 6 footballer. We all enlarge the meaning of "cool". You can use it 7 many words such as "new" or "amazing." Here"s an interesting story we can see 8 illustrate the usage of the word: A teacher asked her students to 9 the waterfall they had visited. On one student"s paper was just the one 10 , "It"s so cool." 11 he thought it was 12 to describe 13 he saw and felt. 14 the story also proves the shortage of words and expressions. 15 "cool," some people have no words to express the same meaning. So it is 16 to improve our word strength to maintain some 17 . As a popular word, "cool" stands for a kind of special 18 that people can accept easily. Excepting "cool," can you think of many words that 19 your life as colorful? I can. And I think they are also very 20 .

单选题The classroom was silent ______ the busy scratching of pens on paper.

单选题It"s a nice house, but ______ too small for a family of live.

单选题To control weather over large areas of the world would seem, at this time, to be impossible. However, man has been highly successful in his attempts to 1 the weather 2 a very small scale. He has 3 microclimates inside and outside homes and offices. Micro means small, and microclimate refers to the climate conditions 4 a small area. There are many things that might cause the climate in a small area to be different from the 5 climate of the region in which it is located. 6 , within cities there might be smaller areas where the climate is different. The microclimate in the yard of one home may be 7 different from 8 in the yard across the street. It is the 9 of trees and their position in a yard that 10 the microclimate. One could probably name many other things that 11 change the microclimate of a yard. Heaters and air-conditioners now in houses and automobiles are good examples of the methods man uses to control microclimates. A completely air-conditioned house is one 12 the microclimate can be controlled to suit man"s comfort. High-altitude flying and recent developments in space flight 13 situations which require complete control of microclimates. Before passenger planes can fly in the air of the stratosphere (同 温层) the cabins have to be pressurized. This must be done 14 passengers can obtain the oxygen they need. 15 airplane cabins in the stratosphere, air from the outside can be pumped into the cabin. In space, 16 , there is no air. Astronauts have to take their air with them. Ways have been developed by which this air can be safely used over and over. In space, astronauts also have to be protected 17 harmful radiations which do not reach the earth 18 the atmosphere screens them out. The principal problem that has to be solved 19 man can exist in space is 20 of providing a microclimate in which he can survive.

单选题The sales manager had his secretary ______ a press conference for their new products.

单选题I ______ home at half past six. A. was at B. come at C. arrive in D. go to

单选题The gas ______ an unpleasant smell. A. gave up B. gave in C. gave away D. gave off

单选题I can"t ______ books like those—they just make me sleepy.

单选题They promised to look ______ the case as soon as they got there.

单选题The mayor made a/an ______ visit to the scene of the fighting last Friday. A. separate B. individual C. civil D. personal

单选题Consumers should do more than simply complain about the poor quality of goods.

单选题I don"t regret ______ her what I thought about her proposal, even if it upset her.

单选题Nobody can do a good job in computer programming ______ he or she has a good command of English.

单选题It does not ______ whether it rains or not.

单选题It seems that there is no resolution to this racial ______.