(B)

　　Sam and Joe were    11    astronauts and they knew each other very well.

　　There was once a very hard trip. All astronauts knew that they would possibly die during the trip because there was only a small   12   0f coming back. All the astronauts did not want to go on this trip except Sam and Joe. They thought   13   would be exciting to have a dangerous trip.  14   they would have some difficulties, they were not afraid of them.

　　"We're the    15    men for the job. " they said to the boss. "There    16    problems, but we can find the answers. "

　　"You're the last people I can trust." said the boss. "Because all the other astronauts don't want to go. "

　　When they were in space, Joe had to go outside    17    some repairs. After the repairs were done, Joe tried to get back inside the spaceship. But the door was locked. He knocked but there was no answer. He knocked again,    18    this time, and again no answer came. Then he hit the door as   19   as he could, and finally someone asked, "Who's there?" "It's me!    20    could it be?"shouted Joe angrily. Sam opened the door and let him in.

　　They came back all right, but Joe would never ask to go on a trip with Sam again!

　　(     )11. A. all       B. every       C. both       D. either

　　(     )12. A. time      B. chance      C. wish       D. work

　　(     )13. A. it        B. that        C. this        D. these

　　(     )14. A. Until     B. Although    C. Then      D. But

　　(     )15. A. worst     B. best       C. good       D. bad

　　(     )16. A. maybe       B. may be        C. can be         D. cant be

　　(     )17. A. making      B. make          C. to make       D. made

　　(     )18. A. bigger     B. lower       C. smaller      D. louder

　　(     )19. A. hard      B. hardly      C. heavy      D. strong

　　(     )20. A. Where else   B. Who else       C. When else     D. Which else