“鱼米之乡”和“天府之国”各指的是[ ]
A．长江中下游平原和华北平原
B．东北平原和华北平原
C．四川盆地和东北平原
D．长江中下游平原和四川盆地
答案：D
________ the law, stealing is an offence, no matter what the motivation is, and should be punished. [ ]
A. In the form of
B. In spite of
C. In favor of
D. In the eyes of
计算序列x（n）的256点DFT，需要（）次复数乘法。
A.256
B.256×256
C.256×255
D.128×8
