分式1x，1x-1，1x+2的最简公分母为______．_爱下问搜题

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问题填空题

分式

1

x

，

1

x-1

，

1

x+2

的最简公分母为______．

答案

分式

1

x

，

1

x-1

，

1

x+2

的最简公分母为x（x-1）（x+1），

故答案为：x（x-1）（x+1）．

阅读理解

阅读下列图表，回答题。

Betty Crocker’s Kids Cook!
Price: ＄12
Ages: 8 and up
Language : English and Chinese
About the book:
Over 60 simple recipes show you how to make nice food.
Fun: Cool words and pretty pictures make cooking interesting.

5 star	32
4 star	8
3 star	4
2 star	2
1 star	4

Customer reviews(顾客评价)
Look at the chart on the right. There are 50 customers and the
stars mean how much they like the book.

小题1:The book was written in _______.
A. Chinese .  B.English.  C. Both A and B.
小题2:The book is suitable for ________.
A. Tom 5, years old    B. Mary, 7 years old   C. John, 9 years old
小题3:________ customers like the book very much.
A. 8         B. 32         C. 2

填空题

函数y=sinxcosx+

的最小正周期为______．