皮皮学，免费搜题
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【单选题】
关于化学键的下列叙述中正确的是 [ ]A.
离子化合物不可能含共价键
B.
共价化合物可能含离子键
C.
含离子键的化合物是离子化合物
D.
含共价键的化合物是共价化合物
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