我国监督行政法律关系的主体主要有( )。 ①国家立法机关；②国家行政监察机关；③

________twice a year，whether it is a car or a bus or a truck，is the rule that every driver

must obey in this city.[ ]

A．Examining  

B．Examined

C．Having been examined  

D．Being examined

On the contrary, I think it is Truman, ______you, 

to blame.

A．more than; are

B．less than; who are

C．rather than; that is

D．rather than; is

人像摄影画面的背景与环境，可以通过（）等变化起到渲染画面气氛的作用。

A.图像

B.形状

C.色彩

D.明暗

E.比例

三条边均为正整数，且最长边为11的三角形有( )个。

A．21
B．23
C．24
D．25

A．很难

B．很简单

C．学得好

D．学得不好