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【判断题】
设 是函数 的孤立奇点,则 2 ) 是 的极点的充要条件是A.
正确
B.
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反馈参考答案：
举一反三
【简答题】简述皮亚杰关于儿童思维发展的四个阶段。
【单选题】(conversation 2) 9.
A.
He has no real problems.
B.
He knows better.
C.
His dreams are small.
D.
His studies will be paid for.
【简答题】简述皮亚杰的儿童思维发展阶段理论。
【简答题】根据短文内容，判断正(T)误(F)。 Do you live in a city? Do you know how cities began? Long long ago, the world had only a few thousand people. These people moved from one place to another. They moved over the land,...
【单选题】-How long have you been like this? -___________October 13th,Monday. [ ]
A.
On
B.
After
C.
From
D.
Since
【单选题】听力原文：How long have you known of that studio? (A) I'm not satisfied with their work. (B) That sounds tough. (C) Ever since I moved to this city. (28)
A.
B.
【简答题】请简述 皮亚杰 的 儿童思维发展的四个阶段及其特点 。
【单选题】---How long have you been in London? ---_________.
A.
Three times
B.
I was there for a week
C.
I’d been there for a month
D.
I’ve just arrived
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