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问题 填空题
将函数y=2sin（2x-
π
3
）的图象向左平移
π
6
个单位所得图象的函数解析式为______．
答案

把函数y=2sin（2x-

π
3
）的图象向左平移
π
6
个单位所得图象的函数解析式为

y=2sin[2（x+

π
6
）-
π
3
]=2sin2x，

故答案为 y=2sin2x．

阅读理解

阅读课文,判断正(T)误(F)

( )1. In the town where the black lived,they could live and work freely.

( )2. Mandela helped Elias get the correct papers so he could stay in Johannesburg.

( )3. In thirty years,the black in South Africa lost almost all their rights and progress gradually.

( )4. Only those who were born in Johannesburg could get a  passbook there.

( )5. Elias was in danger of losing his job when he didn't have a passbook.
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单项选择题

从理论方面分析，增值税的计税依据是( )。

A．C+V+M
B．C+V
C．V+M
D．M
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