单选题听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有5秒钟的时间阅读各个小题；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。

单选题Without the atmosphere, there would be no weather, no wind, rain, snow, or clouds. Air is all around us; we live at the bottom of a great ocean of air. It is invisible, but we can feel it when it moves. There are miles of all above us, pressing down with great weight on the earth and everything on it. Because air presses down on us from all directions at the same time, and because we are able to bear (忍受) this weight, we do not seem to feel it. But scientists have proved that air has this weight, and that anything that has weight creates (产生) a force called pressure. As changes in air pressure take place, they make air move. Air is a gas that expands (膨胀) when heated, gets lighter, and moves upward. When air is cooled, it gets heavier, sinks close to the earth's surface, and flows like water in a great river. As warm air rises, cold air rashes to take its place. Thus winds originate (起源). The winds that blow high above us are caused by the warmer air running away from colder air. The wind we feel near the earth's surface is the heavy colder air trying hard to catch the warmer air. Changes in temperature cause the air to move. And of course there are many changes, so air movements are taking place practically all the time.

单选题They did it all ______ friendship. A. by the name of B. of the name of C. under the name of D. in the name of

单选题The general manager has requested that every department head ______ a meeting tiffs afternoon.

单选题

单选题Taiwan is ______ the southeast part of China, but Japan is ______ the east.[A] in... in...[B] in... to...[C] to... in...[D] on... on...

单选题What's the purpose of getting a hot, damp cloth before dinner?

单选题Mrs. Green was moved out of her old house mainly because

单选题Which of the following is Not true according to this passage?

单选题Co-operation means ______.

单选题It"s about time we got the kitchen ______.

单选题Bananas are widely believed to grow on trees: this is incorrect. The banana is a plant which finishes all its growth in one year, reaching a height of 30 feet. Bananas have a subterranean (地下的) stem from which come large, green leaves. The plant reaches its maturity in about 18 months. As the bunches of bananas mature and the fruit develops, they can be propped (支撑) up with poles and covered with blue polyethylene (聚乙烯) bags. These prevent injury, protect against the frost, and speed ripening by increasing heat and humidity. Once the bananas plant has produced its fruit, the mother plant dies and is replaced by pups (sucker plants). These grow next to the parent and make a new generation of banana plants.

单选题What'stherelationshipbetweenthemanandthewoman?A.Theyareprofessorandstudent.B.Theyarefriends.C.Theyaremotherandson.

单选题Where does this dialogue probably take place?

单选题All too ______ it was time go back to work after the Spring Festival.