函数f（x）的定义域为开区间（a，b），导函数f′（x）在（a，b）内的图象如图所示，则函数f（x）在开区间（a，b）内有极大值点

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函数f（x）的定义域为开区间（a，b），导函数f′（x）在（a，b）内的图象如图所示，则函数f（x）在开区间（a，b）内有极大值点（）

A：1个

B：2个

C：3个

D：4个

上一题下一题 0.0难度选择题更新时间:2015-03-16 11:30:24

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B

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根据材料内容，选择正确答案。

There are 50 students in Class 8. Now they are doing a survey about how they spend their pocket money. Some spend it on books, and others spend it on visiting. What about you? Please read the form and answer the questions.

10%	55%	12%	10%	13%
Buy some CDs and computer games.	Buy some snacks and drinks.	Buy some books in the bookshop.	Save it up and spend it traveling on holiday.	Buy some gifts for friends.

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