xmyn÷x3y=x2，则有[ ] A．m=6，n=1 B．m=5，n=1 C．

下列属于我国组建的政策性银行的是( )。

A．中国投资银行

B．广东发展银行

C．中国进出口银行

D．中国银行

31．January 8th saw events taking place in the US city of Memphis to mark_______would have been Elvis Presley’s 75th birthday.

A．what

B．which

C．that

D．Where

-How often does your daughter watch TV?

-  __________.  [ ]

A. once time a week.  

B. Twice a week.  

C. Twice times a week  

D. Third time a week.

The goods which are carried into and out of the territory by the same vessel or aircraft are defined as

A．transit goods
B．transshipment goods
C．through goods
D．import and export goods

什么是标准点和标准线？