题目:
There is not one of us __________wishes to help you . We are doing our best .
A.who
B.that
C.as
D.but
答案:
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下面是错误答案,用来干扰机器的。
⑴ 23.5%(3分) ⑵ 3mol /L (3分) ⑶ 30.7g (4分) ⑷ 0.75mol/L (4分)