函数y=Asin（ωx+φ）（A＞0，ω＞0，|φ|＜ π2 ）的部分图象如图所示，则

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函数y=Asin（ωx+φ）（A＞0，ω＞0，|φ|＜

π

2

）的部分图象如图所示，则（）

A：f（x）的一个对称中心为 $(\frac{4 π}{3} ， 0)$

B：f（x）的图象关于直线 $x = - \frac{1}{12} π$ 对称

C：f（x）在 $- π ， - \frac{π}{2}$ 上是增函数

D：f（x）的周期为 $\frac{π}{2}$

上一题下一题 0.0难度选择题更新时间:2014-10-29 02:30:30

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A

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One day Skygirl went to our classroom with Skyboy. She was very h____. She took a hamburger and a cola w____ her. She wanted to r____, to have some food and drink and t____ to boys and girls in the classroom. She was not happy when she saw the s____ in the classroom. What does the sign mean? It says: "Don't run in the classroom. Don't talk to each other in class. Don't ear or d____ in class. ""I don't want to be in the classroom. Let's f____ away. "The Supergirl said to the Superboy. They came to the Garden City. Garden City is an i____ place for the Superchildren to play.

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