2. 外语
  3. He had a clear ______ of what was wrong with the machine and fixed it in a short time.

He had a clear ______ of what was wrong with the machine and fixed it in a short time.

admin2013-01-20  91
问题 He had a clear ______ of what was wrong with the machine and fixed it in a short time.
选项 A、debris
B、deficiency
C、perception
D、persecution
答案C
解析 debris碎片，残骸；deficiency缺乏，不足；perception理解，感知；persecution迫害。
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