题目内容
.Our government took measures in time to protect children who had taken Sanlu baby milk powder it was too late.
A now that B as long as C unless D before
D。
解析:
考查连词before的用法。句意:在事态严重之前,我国政府及时采取措施来保护那些喝了三鹿婴幼儿奶粉的孩子们。
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