四级考试强化阅读专练题带答案

　　四级考试强化阅读专练题(一)

　　Long-range goals may be related to our dreams of the future. They might cover five years or more. Life is not a static　thing.We should never allow a long-term goal to limit us or our course of action.

　　1.Our long-term goals mean a lot______.

　　A.if we complete our short-range goals

　　B.if we cannot reach solid short-term goals

　　C.if we write down the dates

　　D.if we put forward some plans

　　2.New short-term goals are bulid upon______.

　　A.two years

　　B.long-term goals

　　C.current activities

　　D.the goals that have been completed

　　3.When we complete each step of our goals ,______.

　　A.we will win final success

　　B.we are overwhelmed

　　C.we should build up confidence of success

　　D.we should strong desire for setting new goals

　　4.Once our goals are drawn up,_______.

　　A.we should stick to them until we complete them

　　B.we may change our goals as we have new ideas and opportunities

　　C.we had better wait for the exciting news of success

　　D.we have made great decision

　　5.It is implied but not stated in the passage that ______.

　　A.those who habe long-term goals will succeed

　　B.writing down the dates may discourage you

　　C.the goal is only a guide for us to reach our desination

　　D.every should have a goal

　　四级考试强化阅读专练题答案

　　adcbc

　　四级考试强化阅读专练题(二)

　　If the population of the earth goes on increasing at its present rate, there will eventually not be enough resources left to sustain life on the planet.By the middle of the 21st century,if present trends continue, we will have used up all the oil that drives our cars,for example.Even if scientists develop new ways of feeding the human race,the crowded conditions on earth will make it necessary for lus to look for open space somewhere else. But none of the other planets in our solar system are capable of supporting life at present. One possible solution to the problem, however,has recently been suggested by American scientist, Professor Carl Sagan.

　　Sagan believes that before the earth's resources are compleetely exhausted it will be possible to change the atmophere of Venus and so create a new world almost as large as earth itself. The difficult is that Venus is much hotter than the earth and there is only a tiny amount of water there.

　　Sagan proposes that algae organisms that can live in extremely hot or cold atmospheres and at the same time produce oxygen,should be bred in condition similar to those on Venus.As soon as this has been done, the algae will be placed in small rockets. Spaceship will then fly to Venus and fire the rockets into the atmosphere .In a fairly short time, the alge will break down the carbon dioxide into oxygen and carbon.

　　When the algae have done theri work, the atmosphere will become cooler,but befor man can set foot on Venus it will be neccessary for the oxygen to produce rain. The surface of the planet will still be too hot for man to land on it but the rain will eventually fall and in a few years something like earth will be reproduced on Venus.

　　1.Inte long run, the most insoluble problem caused by population growth on earth will probably be the lack of ______.

　　a.food

　　b.oil

　　c.space

　　d.resources

　　2.Carl Sagan believes that Venus might be colonized from earth because _____

　　a.it might be possible to change its atmosphere

　　b.its atmosphere is the same as the earth's

　　c.there is a good supply of water on Venus

　　d.the days on Venus are long enough

　　3.On Venus there is a lot of ________.

　　a.water

　　b.carbon dioxide

　　c.carbon monoxide

　　d.oxygen

　　4.Algae are plants that can____.

　　a.live in very hot temperatures

　　b.live in very cold temperatures

　　c.manufacture oxygen

　　d.all of the above

　　5. Man can land on Venus only when_______.

　　a.the algae have done their work

　　b.the atmosphere becomes cooler

　　c.thereis oxygen

　　d.it rains there

　　四级考试强化阅读专练题答案

　　cabdd

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