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CET 等级考试◆CET6題庫下載題庫

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45. The 1986 Challenger space-shuttle _______ was caused by unusually low temperatures immediately before the launch.
(A) expedition
(C) dismay
(B) controversy
(D) disaster


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難度: 非常困難

45.The 1986 Challenger space-shuttle ___..-阿摩線上測驗