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【简答题】
认真读短文，选择正确的答案。 I am a boy. My name is Li Ming. I am ten. I am a pupil. I have two friends. One is Danny. The other one is Jenny. Jenny is a pupil, too. We are in the same row. We like Danny. 1. How old is Li Ming? [ ] A. He's ten. B. He's eleven. 2. Is Li Ming a teacher? [ ] A. Yes, he is. B. No, he isn't. 3. Is Jenny a pupil? [ ] A. Yes, she is. B. No, she isn't. 4. How old is Danny? [ ] A. Sorry, I don't know. B. She's eleven. 5. Are Li Ming and Jenny in the same class? [ ] A. Yes, they are. B. No, they aren't.
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举一反三
【单选题】以下结论正确的是( )
A.
时， 是无穷小量
B.
在自变量的同一变化过程中，两个无穷小量的和、差、积、商都是无穷小量
C.
有界函数与无穷小量之商为无穷小量
D.
有界函数与无穷大量之积为无穷大量
E.
0是无穷小量
F.
时， 为无穷小量
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