因特网的主要组成部分包括通信线路、路由器、客户机服务器和 【12】 。

阅读理解。

     Different people have different ideas about time. People in the USA think that it is important to

know the time. In cities in America, there are clocks in stations, factories and other buildings. Radio

announcers (播音员) give you the correct time during the day. Most Americans also have watches with

them wherever they go. They want to do certain things at certain time. They don’t like to be late.

     But time is not so important to everybody in the world. When you visit a country in South America,

you will find that people there don’t like to rush . If you had an appointment(约会) with somebody, he

could probably be late, because he may not want to arrive on time.

     In South America, even the radio programs may not begin on time. The men on the radio may not

think it is important to tell the exact time. People in South America think that clocks or watches are just

machines. They think that you let a clock or a watch control (控制) your life if you do everying on

time.

1.You can see clocks in stations, factories and other buildings in the USA because ___________.

A. Americans want to make these places beautiful

B. Americans want to sell these clocks

C. Americans think that it is important to know the time

D. Americans don’t think that it is important to know the time

2. Americans don’t want to be late when ______________.

A. they go to stations, factories or other buildings

B. they do certain things at certain time

C. they are free

D. their children go to school

3. The underlined word “rush” most probably means_____________.

A. jump  

B. hurry    

C. run    

D. have a watch

4. If you have an appointment with someone in South America, he may not arrive on time, and this is

because  _____________.

A. he doesn’t have a watch                

B. he forgets to have a watch with him

C. he doesn’t think it is necessary to arrive on time  

D. he doesn’t like to meet you

5. In this passage, we can see that time is very important to ______________.

A. people in the USA.                      

B. people in South America

C. everybody in the world.                  

D. children in school.

女性，40岁，火焰烧伤总面积60%，为Ⅲ度烧伤（40%），经过两下肢切削痂植皮术后1天，术中输血800ml，俯卧位感胸闷，呼吸费力，翻身仰卧后好转。

患者呼吸仍急促、费力，吸100%氧后略有改善，但持续时间不长，进一步观察需检查的首选项目是（）

A.血常规、血小板计数

B.血培养

C.创面培养

D.床旁胸片

E.连续监测血气分析

土工合成材料

暂保单的法律效力有效期较短，一般为多少天？（）

A.15天

B.30天

C.45天

D.60天

对黄疸最有诊断意义的临床特征是（）

A.身黄

B.苔黄

C.小便黄

D.目睛黄

E.爪甲黄