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【单选题】
( )28.Which is true about David and Mike?A.
They both like sports very much.
B.
They both enjoy studying.
C.
They are both students.
D.
They are both teachers.
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【简答题】主从型触发器可以避免 现象的产生。
【单选题】听力原文：M: Hey, Karen, you are not really reading it, are you? W: Pardon? M: The book! You haven’t turned the page in the last ten minutes. W: No, Jim, I suppose I haven’t. I need to get through, but I k...
A.
She's worried about the seminar.
B.
The man keeps interrupting her.
C.
She finds it too hard.
D.
She lacks interest in it.