It is interesting how NASA(美国航天航空局) chose their astronauts for landing them on the moon. They chose men 36 the ages of twenty and thirty-five. There were about fifty of them. Some were 37 air pilots, and 38 were scientists with two or three degrees. NASA telephoned each man they were going to choose, told him the plans and the 39 they might get into. They then asked him if he was willing to be trained as an astronaut, “How could any man 40 such an exciting job?” One of them said, “Dangerous? Of course. It’s dangerous 41 most exciting.” The health and physical condition of the people was, 42 , very necessary. Only those in very good health and physical condition were 43 . While being trained to be astronauts, they went through many 44 . They studied the star and the moon, and they also studied geology, the science of rocks. This was necessary 45 astronauts would have to look for rocks on the moon. They would try to find rocks which might help to tell the 46 of the moon. They were all 47 to fly in helicopters. There helicopters landed straight down to give them some 48 of the way the spaceship would actually land on the 49 . They were also taught the known facts about the 50 in space. They learnt about all the scientists and engineers who 51 spaceships. They visited the 52 where spaceships were repaired. They learnt how every 53 of a spaceship and its instruments work. They also learnt every detail of ground-control 54 . In a word, to be chosen as astronaut, one must be in good 55 , well-informed in science and good at piloting. 小题1: A．at B．between C．of D．on 小题2: A．experienced B．old C．handsome D．retired 小题3: A．none B．few C．others D．both 小题4: A．dangers B．sadness C．reality D．protection 小题5: A．share B．treat C．offer D．refuse 小题6: A．but B．if C．though D．when 小题7: A．in all B．of course C．so far D．at last 小题8: A．noticed B．chosen C．praised D．examined 小题9: A．jobs B．places C．courses D．ways 小题10: A．so B．because C．as if D．even though 小题11: A．size B．scene C．age D．name 小题12: A．shown B．trained C．told D．allowed 小题13: A．advice B．experience C．surprise D．thought 小题14: A．water B．rock C．moon D．earth 小题15: A．secrets B．traditions C．theories D．conditions 小题16: A．drew B．developed C．designed D．discovered 小题17: A．offices B．shops C．colleges D．factories 小题18: A．part B．movement C．step D．body 小题19: A．method B．difficulty C．system D．trick 小题20: A．shape B．position C．order D．health