单项选择题
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A. The advantages of X-rays over thermographs.
B. The advantages of scientific photography for diagnostic purposes.
C. How thermograph photography was invented.
D. Several new techniques for reducing pain.
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单项选择题
A. They didn’t have a credit card.B. They both felt sick.C. They grew tired of waiting.D. They were afraid that the concert had been cancelled.
A. They didn’t have a credit card.
B. They both felt sick.
C. They grew tired of waiting.
D. They were afraid that the concert had been cancelled.
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单项选择题
A. 8:45 B. 9:25 C. 9:05 D. 9:10
A. 8:45
B. 9:25
C. 9:05
D. 9:10
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