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【简答题】
能用确切数学式表达的信号称为______信号,不能用确切数学表达的信号称为______信号。周期性信号是属于上述的______信号,随机信号是属于________信号。
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反馈参考答案：
举一反三
【单选题】I think they should ________ him.
A.
replace
B.
to replace
C.
replaced
D.
to be replaced
【简答题】To some extend, I understand parents’concerns, but I think they should love their children for who they are, not _____ they want them to be.
【简答题】功能评价的方法包括功能______法和功能______法。
【单选题】听力原文：W: This ballroom is so packed that we can't try our steps. M: I think they should control the number of people, don't yon? Q: Why is the woman complaining? (19)
A.
The room is too crowded.
B.
The room is too small.
C.
The room is dirty with step stairs.
D.
They .couldn't play ball games.
【单选题】听力原文：W: The restaurant doesn't seem to get enough customers. I think they should be doing better, since there's no competition along this street. M: I heard they're breaking even. So, for now it's pro...
A.
The restaurant is losing money.
B.
The restaurant should close down.
C.
The restaurant is neither losing money nor gaining.
D.
The restaurant is making money despite the fact that it has not many customers.
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