单项选择题
Questions 11 to 18 are based on the conversation you have just heard.
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A.Camp in the mountains.
B.Stay at his own house.
C.Write to his girlfriend.
D.Hold his uncle’s mails.
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单项选择题
The principle discovery in this century shows ______ .
A.man has overthrown Newton' s laws of physics
B.man has solved a new set of gigantic puzzles
C.man has lost many scientific discoveries
D.man has given up some of the once accepted theories
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单项选择题
The writer's attitude towards science is ______ .
A.critical
B.approving
C.neutral
D.regretful
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