题目内容
【题目】What will the man do for the woman?
A. Repair her car. B. Give her a ride. C. Pick up her aunt.
【答案】B
【解析】听力原文:
W: Oh my! My car broke down, and I have to meet my aunt at the railway station before noon.
M: You’re lucky. I can drop you off on my way.
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【题目】【2015宁波二模】某同学取一定量某工厂所排废水试样,进行如下实验:
已知废水试样中可能含有下表离子中若干种.
阳离子 | Ba2+、K+、NH4+、Fe2+、Fe3+、X |
阴离子 | CO32﹣、SO32﹣、NO3﹣、Y |
下列判断不正确的是( )
A.离子X是H+,离子Y是SO42﹣
B.不能确定NO3﹣是否存在与废水中
C.沉淀C是纯净物
D.废水中一定存在Fe2+、NH4+,可能存在K+