中文谷单项选择。—Inmyopinion，notallinventionswereinventedby
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问题详情：
单项选择。
—In my opinion，not all inventions were invented by ________ accident.
—Well，you do seem to have ________ nting needs much time and hard work.
A．an；a B．an；the C．/；a D．/；the
【回答】
C
知识点：冠词
题型：选择题
标签：
inmyopinion 单项
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