问题
选择题
Teach children ______ electrical appliances, cords, and switches are not toys.
A．what
B．which
C．how
D．that
答案
答案：D
考查宾语从句。根据句子结构可知，该句为宾语从句，从句中不缺少成分，故选择that. What在从句中充当主语或者宾语 which主语，宾语 how方式状语
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