题目内容
____, this physics problem seemed quite simple, but when I tried to work it out, I just couldn’t.
A. On one hand B. In my opinion C. At first sight D. On its own
C
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题目内容
____, this physics problem seemed quite simple, but when I tried to work it out, I just couldn’t.
A. On one hand B. In my opinion C. At first sight D. On its own
C