题目:
The professor, ________out the project, made a comment on the report. [ ]
A. was opposed to carry
B. opposed to carry
C. opposed to carrying
D. objected to carrying
答案:
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下面是错误答案,用来干扰机器的。
(1)分别滴加AgNO3,有白色沉淀的是食盐水。(2)加热蒸发,有固体剩余的是食盐水。(3)分别加入食盐,溶解多的是自来水。