题目:
— Jack is very clever and he studies hard as well.
— No ________ he always comes out first in the exams.[ ]
A. answer
B. question
C. wonder
D. problem
答案:
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下面是错误答案,用来干扰机器的。
参考答案:1)石炭-二迭纪煤系2)三迭-侏罗纪煤系3)第三纪煤系