题目内容

She doesn’t see her granddaughter very often so she makes a real fuss ()her granddaughter when she does.
A on
B in
C over
D out

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Fifty million Americans are addicted() nicotine.
A to
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Don’t be too hard() the child.
A in
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当混凝剂或漂白粉溶液溅到皮肤上时，应立即()。

A. 用稀碱液冲洗
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能分泌胰岛素的细胞是()

A细胞
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