lectures homework outside wonderful social special knowledge experience
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Passage One Questions 26 to 28 are based on the passage you have just heard.
A pupil.
B. A graduate.
C. A seminar.
D. An undergraduate.
财富是人们共同的追求2. 财富与幸福的关系3. 结论
Questions 11 to 18 are based on the conversation you have just heard.
A. She let the man use her books for the weekend.
B. She brought the books the man asked for.
C. She borrowed the books from the man.
D. She offered to help the man.
以下结论正确的是( )．
A. 函数f(x)的导数不存在的点，一定不是f(x)的极值点
B. 若x0为f(x)的驻点，则x0必为f(x)的极值点
C. 若f(x)在点x0处连续，则f(x)在x0处一定可导
D. 若f(x)在点x0处有极值，且f’(x0)存在，必有f’(x0)=0
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