问题
选择题
Last summer I took a course on ________ poisonous gases.[ ]
A．how to deal with
B．what to deal with
C．how to be dealt with
D．what to be dealt with
答案
答案：A
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Last summer I took a course on ________ poisonous gases.[ ]
A．how to deal with
B．what to deal with
C．how to be dealt with
D．what to be dealt with
答案：A