2. 职称英语
  3. A、He studied the designs of various clocks.B、He did experiments on different ma

A、He studied the designs of various clocks.B、He did experiments on different ma

游客2023-06-20  19
问题
选项 A、He studied the designs of various clocks.
B、He did experiments on different materials.
C、He bought an alarm clock with a pig face.
D、He asked different people for their opinions.
答案 D
解析
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