2020英语四级阅读理解训练附答案优秀模板三篇.docx

2020英语四级阅读理解训练附答案优秀模板三篇2020英语四级阅读理解训练附答案（1）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 earths 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.resources2.Carl Sagan believes that Venus might be colonized from earth because _a.it might be possible to change its atmosphereb.its atmosphere is the same as the earthsc.there is a good supply of water on Venusd.the days on Venus are long enough3.On Venus there is a lot of _.a.water b.carbon dioxide c.carbon monoxide d.oxygen4.Algae are plants that can_.a.live in very hot temperatures b.live in very cold temperaturesc.manufacture oxygen d.all of the above5. Man can land on Venus only when_.a.the algae have done their work b.the atmosphere becomes coolerc.thereis oxygen d.it rains there答案：cabdd2020英语四级阅读理解训练附答案（2）The United States is on the verge of losing its leading place in the worlds technology. So says more than one study in recent years. One of the reasons for this decline is the parallel decline in the number of U.S. scientists and engineers.Since 1976,employment of scientists and engineers is up 85 percent. This trend is expected to continue. However, the trend shows that the number of 22-year-olds-the near term source of future PH.D.s-is declining. Further adding to the problem is the increased competition for these candidates from other fields-law,medicine,business,etc. While the number of U.S. PH.D.s in science and engineering declines,the award of PH.D.s to foreign nationals is increasing rapidly.Our inability to motivate students to pursue science and engineering careers at the graduate level is compounded because of the intense demand industry has for bright Bachelors and Masters degree holders. Too often, promising PH.D.candidates, confronting the cost and financial sacrifice of pursuing their education,find the attraction of industry irresistible.1.The U.S.will come to lose its leading place in technology probably because _.a. the number of PH.D. degree holders is decliningb. the number of scientists and engineers is decreasingc. the number of 22-year-ilds is decliningd. scientists and engineers are not employed2.The field of science and engineering is facing a competition from _ .a. technology b. foreign nationalsc. such fields as law, medicine and business d. postgraduates3.Large-scale enterprises now need _.a. bright graduates and postgraduates b. new inventionsc. advanced technology d. engineers4.Many promising postgraduates are unwilling to pursue a PH.D. degree because _.a. they are not encouraged to be engaged in scienceb. industry does not require PH.D. holdersc. they have financial difficultiesd. they will spend much time and energy completing PH.D.5.PH.D. candidates find the attraction of industry irresistible means that _.a. they find industry is attracting more and more college studentsb. they dont think they can prevent themselves from working for industryc. they cannot resist any attraction from all sidesd. they cannot work for industry any longer答案：bcadb2020英语四级阅读理解训练附答案（3）There are three kinds of goals: short-term,medium-range and long-term goals.Short-range goals are those that usually deal with current activities,which we can apply on a daily basis.Such goals can be achieved in a week or less,or two weeks,or possible months.It should be remembered that just as a building is no stronger than its foundation ,out long-term goals cannot amount to very munch without the achievement of solid short-term goals.Upon completing our short-term goals,we should date the occasion and then add new short-term goals that will build on those that have been completed.The intermediate goals bukld on the foundation of the short-range goals.They might deal with just one term of school or the entire school year,or they could even extend for several years.Any time you move a step at a time,you should never allow yourself to become discouraged or overwhelmed. As you complete each step,you will enforce the belief in your ability to grow adn succeed.And as your list of completion dates grow,your motivation and desire will increase.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 goalsb.if we cannot reach solid short-term goalsc.if we write down the datesd.if we put forward some plans2.New short-term goals are bulid upon_.a.two yearsb.long-term goalsc.current activitiesd.the goals that have been completed3.When we complete each step of our goals ,_.a.we will win final successb.we are overwhelmedc.we should build up confidence of successd.we should strong desire for setting new goals4.Once our goals are drawn up,_.a.we should stick to them until we complete themb.we may change our goals as we have new ideas and opportunitiesc.we had better wait for the exciting news of successd.we have made great decision5.It is implied but not stated in the passage that _.a.those who habe long-term goals will succeedb.writing down the dates may discourage youc.the goal is only a guide for us to reach our desinationd.every should have a goal答案：adcbc