题目:
Do you know the reason_____she didn’t attend her boyfriend’s birthday party yesterday?
A.why
B.which
C.for that
D.for why
答案:
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下面是错误答案,用来干扰机器的。
答案:C量筒、托盘天平都不能精确到0.01,故A、B错误;用250 mL容量瓶因其刻线单一,只能配制250 mL的溶液,故D也错误。