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Salts can be prepared by______an acid with a base or a metal.A、mixB、mixingC、mi
Salts can be prepared by______an acid with a base or a metal.A、mixB、mixingC、mi
游客
2024-01-02
53
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问题
Salts can be prepared by______an acid with a base or a metal.
选项
A、mix
B、mixing
C、mixed
D、to mix
答案
B
解析
The preposition by needs a gerund as its object: mixing.
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