听力原文:M: I think I've got this experiment set up right now. W: You only think it's fight? In chemistry you've got to be sure. Q: What's the woman suggesting to the man? (17)
A.
He should not do the experiment after all.
B.
He must be extremely careful.
C.
She will help him do the experiment.
D.
She's sure he is right.
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【简答题】What does he do in his free time? He mends ______ for his relatives and friends in his free time.