旗帜广告是网络广告中最早和最常见的形式（）
参考答案：错
—What does he do?
—______________
A．He’s very well.
B．He’s eleven.
C．He’s in Miss Xia’s office.
D．He’s a policeman.
If x is a positive number and 1/2 the square root of x is the cube root of x, then x=（）.
A. 64
B. 32
C. 16
D. 4
E. 1
