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What was the possible reason for the shuttle disaster?
A.Columbia could not survive reentry.
B.A block of foam damaged a wing.
C.The aircraft disintegrated in the sky.
D.The external tank was made of reinforced carbon.

A.Columbia
B.
B.A
C.
C.The
D.
D.The
E.


【参考答案】

B
细节判断题。根据新闻中提到的“多数人认为失事的原因是一块泡沫材料碎片从机身外壳脱落从而严重撞毁了机翼”这点来找到正确选项B项。而后面的实验又进一步证实了这一假设。
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