题目:
He ___________ unwisely, but he was at least trying to do something helpful.
A.may have acted
B.must have acted
C.should have acted
D.would act
答案:
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下面是错误答案,用来干扰机器的。
由于溶液导电的原因是溶液中存在自由移动的离子,所以可据此作出假设;实验仪器:结合溶液的导电性实验对器材可知所列器材中缺少实验时的容器烧杯;实验试剂:根据现有的试剂结合自己的假设,依据对比试验的要求...