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listen to the recording

A. . They are well-paid.
B. . They are well-trained.
C. . They are becoming specialized.
D. . They are becoming unemployed.

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listen to the recordingQuestions 12 to 14 are based on the conversation you have just heard.

A. . It seems quite normal.
B. . It is a depressing topic.
C. . It sounds a bit strange.
D. . It is getting more serious.

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listen to the recording

A. . They are not allowed to speak.
B. . They must follow the rules.
C. . They treat them as sacred places.
D. . They are supposed to be quiet.

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listen to the recording

A. . Talking loudly with others about what you are seeing.
B. . Speaking openly about what you are seeing.
C. . Breaking the rules of the art gallery and museum.
D. . Throwing out of someone who is talking aloud.

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Part IVDirections:In this section, you’ll hear some passages. At the end of each passage, you'll hear some questions. Both the passage and the questions will be spoken only once. After each question, choose the best answer from the four choices marked A, B, C, and D.Questions 15 to 17 are based on the passages you have just heard.[音频]

A. . To design the dependable military rockets.
B. . To have the business travel into space.
C. . To launch the one-man vehicle into space.
D. . To send unmanned vehicle into space.

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listen to the recording

A. . They are well-paid. B. . They are well-trained. C. . They are becoming specialized. D. . They are becoming unemployed.

listen to the recordingQuestions 12 to 14 are based on the conversation you have just heard.

listen to the recording

listen to the recording

A. . They are well-paid.
B. . They are well-trained.
C. . They are becoming specialized.
D. . They are becoming unemployed.