网络的物理拓扑结构是指网络中（）的整体结构。A、传输信号 B、传输介质 C、传输数据

阅读理解。

1. There will be __________ in Grand Movie Theater this week.

A. one Chinese film

B. two Chinese films

C. three American films

D. a lot of foreign films

2. If a man with his child goes to Grand Movie Theater on Sunday, they will pay __________ for the

film.

A. $ 12

B. $ 9

C. $ 6

D. $ 5

3. If you are free on Friday morning, you can see the film __________ in Grand Movie Theater.

A. KUNGFU HUSTLE

B. A WORLD WITHOUT THIEVES

C. TROYD. HARRY POTTER (III)

4. You can see three films either on __________ or on __________.

A. Wednesday; Friday

B. Tuesday; Wednesday

C. Thursday; Friday

D. Saturday; Sunday

5. From the poster, we know __________ is a director and actor in the film.

A. Alfonso Cuaron

B. Feng Xiaogang

C. Wolfgang Peterson

D. Zhou Xingchi

The security rationale is very important for any scientific or technological endeavor because the budget of security- related programs is limited usually by that nation's comprehension of a hazard or redefine the idea of national security.

A．perception

B．reason

C．passion

D．reaction

国家鼓励

A．无偿献血制度
B．无偿义务献血制度
C．18周岁至55周岁健康公民自愿献血
D．18周岁至50周岁健康公民自愿献血
E．国家工作人员、现役军人和高等学校在校学生率先献血

支柱接顶后继续供液（）再切断液源以保证初撑力。

A、2-3s

B、3-4s

C、4-5s

D、5-6s

水的PH值用来表示水中氢离子的（）。