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【单选题】
将铁片和铜片同时放入硝酸银溶液中，充分反应后过滤，在滤纸上留下少量金属a，并得到滤液b。下列关于a或b的组成说法错误的是 [ ]A.
若向a中滴加稀盐酸有气泡生成，则a中一定含有Ag
B.
若向a中滴加稀盐酸无气泡生成，则b中可能含有Cu 2+
C.
若向b中滴加稀盐酸产生白色沉淀，则b中可能含有Fe 2+
D.
若向b中滴加稀盐酸无明显变化，则a中一定含有Ag，可能含有Cu
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【简答题】I am t____, but Paul is not. His things are everywhere.
【单选题】Many teenagers don ’ t like to talk with their parents. But I am _____ them. I love to share my joy and sorrow with my parents .
A.
the same as
B.
different from
C.
interested in
D.
angry with
【单选题】I am sorry, but I don ’ t want to ______ the trouble.
A.
be involved in
B.
involve in
C.
involve with
D.
be involved with
【单选题】I don ’ t know the reason ____you were absent from the meeting, but I am sure that someone will tell me the season ____ you haven ’ t told me.
A.
why;that
B.
that ; why
C.
because;which
D.
of which;that
【单选题】听力原文：W: What's the matter? Why are you feeling so cold today? M: I am not sure, but I think I am coming down with a cold. Q: What is the man's problem? (16)
A.
He is going to visit his friends.
B.
He doesn't like cold weather.
C.
He doesn't feel well.
D.
He doesn't have any problem.
【简答题】塑件的形状应利于其脱出模具,塑件侧向应尽量避免设置 。
【单选题】听力原文：M: Why don' t we stop for some ice-cream after the film? W: I' d love to, but I am on a diet. What did the man ask the woman to do?
A.
Go on a diet.
B.
Have a snack.
C.
Play some tennis.
D.
Stop screaming.
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