All efforts of cloning an animal will be ________ if there is not enough diversity in the group to o...
2023-01-02 18:15:56 192次 2013届山东省临沂市高二下学期质量检测英语试试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
All efforts of cloning an animal will be
________ if there is not enough diversity in the group to overcome illness.
|
A．in need
|
B．in place
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C．in vain
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D．in case
|
本题链接：
