单选题:The hypothesisthat the explosion was caused by a rock collid

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题目内容:
The hypothesisthat the explosion was caused by a rock colliding with the Earth A.has remained a puzzle
B.lacks sufficient evidence
C.is a university professor
D.was generated by the explosion
E.will kill many animals
F.are attacked by aliens

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答案解析:

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可拮抗维生素B6或增加维生素B6经肾脏排泄,引起贫血或周围神经炎的是( )

可拮抗维生素B6或增加维生素B6经肾脏排泄,引起贫血或周围神经炎的是( )

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Jensen is a dangerous man, and can be very brutal.

Jensen is a dangerous man, and can be very brutal.A.careless B.strong C.cruel D.

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The idea was quite brilliant.

The idea was quite brilliant.A.positive B.clever C.key D.original

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