Forests have always been useful and important to man who makes use of them in many ways. Every day trees are serving man everywhere. Trees supply man with fruits and building materials in the form of wood. Without trees it would be impossible to build houses, boats, bridges and so on. Furniture such as desks, chairs and beds is made of wood. Trees can stop man from terrible heat. They're also useful in preventing good and rich top soil from being washed away during heavy rains.

　　If there were no trees, heavy rains would wash away the rich top soil that is so important to plants. The result is that the land will become a desert. There are plenty of desert areas in the world. A long time ago these desert areas used to be very rich areas, but man in the past had no enough knowledge about science of nature, they cut down too many trees in the area where they lived and never planted new ones. By and by the rich top soil was blown and washed away by strong winds and heavy rains. In the end the rich land changed into useless deserts where nothing could grow.

According to the passage, ______.

　　　　A. a long time ago, man didn't know how to make use of wood

　　　　B. trees are not as useful as they were in the past

　　　　C. trees were more found in the past than they are today

　　　　D. people have always found trees useful

　　If there were no trees, ______.

　　　　A. the land would become better　　　　B. heavy rains would be very clean

　　　　C. the rich soil couldn't be kept　　　　 D. there wouldn't be any plants

　From the passage, we know that man must ______.

　　　　A. do nothing to keep the balance（平衡）of nature

　　　　B. take his best to keep the balance of nature

　　　　C. try his best to keep the balance of nature

　　　　D. do his best to stop the balance of nature

完形填空

　Mr Robinson had to travel somewhere on business, and as he was in a hurry, he decided to go by 　1 　．He liked sitting beside a window seat when he was 　2 　, so when he got onto the plane, he looked 　3 　a window seat．He found that all of them had already been 　4 　except one．There was a soldier 　5 　in the seat beside this one, and Mr Robinson was surprised that he 　6 　taken the one by the windows, but 　7 　, he at once went toward it．

　When he 　8 　it, however, he saw a notice on it．It 　9 　, “This seat is reserved for proper load balance（载重平衡）．Thank you．”Mr Robinson had never seen 　10　 notice in a plane before, but he thought that the plane 　11 　be carrying something particularly heavy in 　12 　baggage room which made it necessary to 　13 　the passengers properly balanced, so he walked on and found 　14 　empty seat, not beside a windows, to sit 　15 　．

　Two or three people 　16 　to sit in the window seat beside the soldier, but they too read the 　17 　and went on．

　Then, when the plane was nearly 　18 　, a very beautiful girl stepped into the plane．The soldier, 　19 　was watching the passengers coming in, quickly took the notice off the seat beside him．In this way he succeeded to have the 　20 　as a companion during the whole trip．

Shopping for clothes is not the same experience for a man as it is for a woman. A man goes shopping   36  he needs something. His purpose is settled and decided in   37 . He knows what he wants, and his goal is to find it and　38　it. All men  39 walk into a shop and ask the shop assistant for what they want. If the shop has it in stock(库存), the deal can be done and    40   is completed in less than five minutes, with hardly any chat to everyone’s   41  .
For a man, slight problems may begin when the shop doesn’t have what he wants. In that  42  , the salesman tries to sell something else—he    43 the nearest to the article required. A good salesman brings out such a substitute(替代品)   44  , and he may say, “I know this jacket is not the style you want, sir, but would you like to try it for size? It   45   to be the color you mentioned.” Few men have   46   with this treatment, and the usual response is “This is the right color and may be the right size, but I shouldn’t be   47   my time and yours by trying it on.”
For a woman, buying clothes is always done in the   48  way. Her shopping is not often   49   on need. She has never fully decided what she wants, and she is only “having a look round”. She is always  50 to persuasion, willing to try on any number of things. Deep in her mind is the thought of finding something that   51   thinks suits her. Most women have an excellent sense of value and are always on the look-out for the unexpected  52 . Faced with a roomful dresses, a woman may easily spend an hour going from one rail to another      53 selecting the dress she wants to try on. It is a tiresome process, but apparently a(n)   54   one. Most dress shops provide chairs for the waiting    55  .