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【判断题】
福尔哈德法测定氯离子的含量时，在溶液中加入硝基苯的作用是为了避免AgCl转变为AgSCN。A.
正确
B.
错误
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【单选题】-Do you know going to stay in London? -No, I don't. Maybe a few days. [ ]
A.
when he is
B.
how long he is
C.
when is he
D.
how long is he
【简答题】下列化合物能形成分子内氢键的是A. B. C. D.
【单选题】What can be inferred about Tom?
A.
He has been working for a long time.
B.
He doesn't know how to use a computer.
C.
He doesn't want to write the paper.
D.
He needs to get an office job.
【单选题】Why did the writer say that he would have a long night?
A.
He wondered how long he had to wait for the next bus.
B.
No driver would give him a ride.
C.
He didn't know the mutes.
D.
He perhaps would have to take a taxi.
【简答题】How long has he working in the department? _________________.
【单选题】How long will the man stay at the hotel?
A.
He won't leave until the next bank holiday.
B.
He hasn't decided yet.
C.
A couple of days.
D.
A couple of weeks.
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