A:15
B:524
C:1081
D:512
函数x-2中自变量x的取值范围是____
下列各项中,不属于乾隆时期发生的是( )
________Beijing you see today is quite ________ different city from what it used to be.
将抛物线y=3x2向左平移2个单位,再向下平移1个单位,所得抛物线为( )