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【多选题】
下列关于胶束的说法正确的是()A.
在溶液表面不能形成胶束
B.
胶束的形状通常是比较规则的
C.
形成胶束后的溶液是热力学上不可逆系统
D.
表面活性剂的增溶作用与胶束有关
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【单选题】What reason does the man give for not visiting his parents?
A.
He lives too far away from them.
B.
He doesn't get along with them.
C.
He has been too busy with work.
D.
He doesn't have a car to drive there.
【单选题】Why does the person have to give up leisure hours if he wants to own a private car?
A.
Because he has to spend some time in the car.
B.
Because he has to work extra hours to get the money.
C.
Because he is busy working for his boss.
D.
Because keeping a car in good condition takes a lot of time.
【单选题】Why does the man ride a bike to work?
A.
He thinks subway is too expensive.
B.
His house is not far away from the office.
C.
He wants to keep in a good shape.
D.
His car is being repaired right now.
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【简答题】根据所听对话及问题，选择正确答案。 ( ) 1. A. In the shop. ( ) 2. A. He can't find his car. ( ) 3. A. Yes, she does. ( ) 4. A. By car. ( ) 5. A. No, he won't. ( ) 6. A. In a bookstore. B. In the...
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