Astronauts, people who fly into space, need special training. First they go to Houston, Te

Astronauts, people who fly into space, need special training. First they go to Houston, Texas. That is the home of the Johnson Space Centre. There they are tested to see how strong and smart they are.
One of the first tests is for the heart. The people walk or run, then the space doctors see how fast their hearts are beating.
Another important test is performed. In this test the person must curl（蜷曲）his body up in a ball. When he is in that position, he is put into a round cloth bag. The doctors give him no idea how long he will have to stay in the bag. If a spaceship broke down in space, the astronauts would get into bags like this. Then they would have to wait and curl up in darkness, until help could arrive. You can see that an astronaut must not be afraid of tight space or darkness.
After the tests, only the best people are chosen to start astronaut training in a training centre. The astronauts in training learn many other things. They learn how to jump out of a moving airplane. They learn to how to blow up a lifeboat and get into it while they are in the ocean. The astronauts also have to learn how to get lifted out of the ocean by helicopter（直升机）. That may look fun, but it can be dangerous.
After they finish training, the astronauts continue to work. They stay in good shape by running and doing exercise. They read about their special jobs. In that way they can learn new facts about space travel.
Then the big day comes. The astronaut is told to go to work on a flight into space. The crew members（全体船员）get to know each other first. Then they can learn which job each will do.
【小题1】The astronauts don’t know how long they will stay in the bag in the test because .A．the doctors need to know how strong they areB．the astronauts need to show how smart they areC．good astronauts mustn’t be afraid of darkness or tight spaceD．nobody knows when help will come if the spaceship breaks down【小题2】The astronauts don’t learn how to in the training centre.A．walk or run in spaceB．jump out of the moving planeC．blow up a lifeboatD．get lifted out of water by helicopter【小题3】Which is the correct order according to the passage?
a. Doctors do tests on the astronauts.
b. The astronauts go to the Space Centre.
c. The astronauts learn new facts about space travel.
d. The best people are chosen for training.
e. The astronauts go to work on a flight into space.A．a, b, c, d, eB．d, a, e, b, cC．b, a, d, c, eD．c, d, e, b, a【小题4】Which of the following is NOT true?A．After the tests, only the best people are chosen to start astronaut training in a training centre.B．The crew members get to know each other after the tests.C．One of the first tests is for the heart.D．An astronaut must not be afraid of tight space or darkness.D

(答案→)D 解析：短文大意：这篇短文主要讲述了宇航员的培训过程，他们首先要去训练中心，然后医生对这些宇航员进行测试，接下来最优秀的人被选拔出来进行训练，宇航员在了解关于空间旅行的一些知识后，宇航员进入太空飞船工作。【小题1】细节理解题。根据短文第三段描述，可知这些宇航员不知道他们会在这个袋子里面呆多久是因为，当空间飞船出故障时，没有人知道什么时候能得到帮助。故选D。【小题2】细节理解题。根据短文第四段描述，可知宇航员不用学习在太空中行走或者跑步。故选A。【小题3】主旨大意题。阅读短文可知，宇航员首先要去训练中心，然后医生对这些宇航员进行测试，接下来最优秀的人被选拔出来进行训练，宇航员在了解关于空间旅行的一些知识后，宇航员进入太空飞船工作。故选C。【小题4】细节理解题。根据最后一段The crew members（全体船员）get to know each other first. 描述，可知在训练之后这些人员首先相互认识。故选B。

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