题目内容

痕量组份的测定一般不采用

A. 分光光度法
B. 薄层色谱法
C. 原子吸收光谱法
D. 滴定法

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用邻苯二甲酸氢钾（KHC8H4O4)为基准物，标定0.1mol·L-1NaOH溶液，每份基准物的称取质量范围宜为[MKHC8H4O4 = 204.2]

A. 0.8-1.6g
B. 0..4-0.6g
C. 0.2-0.4g
D. 0.2g左右

The builders are working REALLY SLOWLY. When will they be finished?

A. 对
B. 错

Liam lived in Paris for a year so he speaks QUITE WELL French.

A. 对
B. 错

We're good friends with our neighbours. We invite OFTEN them for dinner.

A. 对
B. 错