完形填空精练4先通读短文，掌握其大意，然后从A、B、C、D四个选项中选出一个可以填入相应空白处的最佳答案，并将其标号填入题前括号内。（一）It is interesting how NASA chose their astronauts for landing them on the moon. They chose men _1_ the age of twenty and thirty-five. There were about fifty of them. Many were _2_ air pilots. _3_ were scientists with two or three degrees. NASA telephoned each man they were going to choose， told him the plans and the _4_ they might get in. They then asked him if he was willing to be trained as an astronaut. “How could any man _5_ such an exciting job？” One of them said， “Dan-generous？ Of course. Its dangerous _6_ most exciting.”The health and physical condition of _7_ was， of course， very necessary. _8_ those in very good health and physical condition were chosen.While being trained to be astronauts， they went through many _9_ They studied the star and the moon， and they also studied geology， the science of rocks. This was necessary 10 astronauts would have to look for rocks on the moon. They would try to find rocks which might help to tell the _11_ of the moon. They were all _12_ to fly in helicopters直升飛机. These helicopters landed _13_ down to give them some experience of the way the spaceship would _14_ land on the moon， They were also taught the _15_ facts about the conditions in space. They learnt all the technical details of the spaceships and rockets. They visited the scientists and engineers who _16_ them. They visited the factories where they were _17_. They learnt how every _18_ of a space-ship and its instruments work. They also learnt every detail of ground-control _19_.In a word， to be chosen as an astronaut， one must be in good health， _20_ in science and good at piloting.（ ）1. A. at B. between C. of D. on（ ）2. A. experienced B. oldC. trained D. young（ ）3. A. None B. Few C. Others D. They（ ）4. A. dangers B. sadness C. Hardship D. troubles（ ）5. A. accept B. receive C. offer D. refuse（ ）6. A. but B. if C. though D. however（ ）7. A. the scientists B . menC. pilots D. young people（ ）8. A. As B. Only C. If D. Or（ ）9. A. jobs B. places C. courses D. ways（ ）10. A. for B. because C. since D. so that（ ）11. A. story B. background C. age D. name（ ）12. A. shown B. trained C. told D. let（ ）13. A. straight B. straightly C. indirectly D. directly（ ）14. A. possibly B. likely C. actually D. really（ ）15. A. not known B. well-knownC. unknown D. known（ ）16. A. drew B. produced C. designed D. made（ ）17. A. repaired B. built C. developed D. fixed（ ）18. A. part B. movement C. machine D. body（ ）19. A. house B. stop C. system D. station（ ）20. A. well-done B. well-fedC. well-kept D. well-informed（二）In 1985 a France television company sent its reporters to the Paris Metro地鐵. They took cameras to see what _1_ would do if they saw someone _2_ on the platform or trains. The incidents looked _3_ but they were all done with the help of actors. However， _4_ people tried to help， and most passengers _5_ not to notice. In one of the incidents， a foreigner was attacked by three men. The attack was on a _6_ which was quite full， and _7_ the man tried to get the other passengers to help， they all _8_. This is not only a French problem. A British newspaper reported in 1991 that a（n） _9_ of Social Psychology in New York had sent his students out to _10_ their own cars. The students didnt try to 11 what they were doing. About 80 people _12_ 215 car thefts， and only twelve of them tried to _13_ the student robbers. In a typical经典的 _14_， one man stopped， looked， and then put his hands over his _15_ and shouted “I didnt see that！” About forty people _16_ to help the thieves， and two people _17_ sat down next to the car and waited to buy a camera and television set a _18_ was taking from the back seat of his own car. The professor wonders whether its a problem of _19_ cities or would be the same thing as happens _20_.（ ）1. A. travelers B. tourists C. citizens D. passengers（ ）2. A. stolen B. followed C. attacked D. lost（ ）3. A. real B. false C. perfect D. successful（ ）4. A. quite a few B. quite a lot ofC. very few D. nearly no（ ）5. A. happened B. seemed C. managed D. pretended（ ）6. A. bus B. plane C. ship D. train（ ）7. A. even if B. although C. yet D. however（ ）8. A. escaped B. refused C. stared D. obeyed（ ）9. A. official B. reporter C. journalist D. professor（ ）10. A. rob B. damage C. break D. destroy（ ）11. A. tell B. show C. hide D. explain（ ）12. A. recognized B. watched C. discovered D. found（ ）13.