智真主机TH1000的MIC输入口共有（）个。A.12 B.16 C.20 D.24

为鼻前庭最狭窄部位的是（）。

A.后鼻孔

B.前鼻孔

C.梨状孔

D.嗅裂

E.鼻阈

詹天佑是中国第一批赴海外留学的幼童之一，他是在中国近代哪次运动中被派出国留学的[ ]

A．洋务运动期间

B．戊戌变法期间

C．辛亥革命期间

D．北洋军阀统治期间

阅读理解。

     People often talk as if shyness is a disease or mental condition that can be cured.  I prefer to think of it as an emotional disability. It's something we are bom with and something we carry with us in our entire lives. There are too many people,however,who seem to be determined to find some ways of doing away with their shyness. In my opinion,it's a waste of time. I don't mean that we should do nothing about it;quite the

contrary,I think we need to separate the basic fact of shyness from our ability to take part in a social

environment.

      Look at one of the most famous shy people of them all,Johnny Carson. This man is painfully shy,yet

for decades he made a living talking and associating(交往) with different people every night,in front of a

national audience.  Carson has never done away with his shyness,but he has successfully found a way to

deal with it to the extent that he could be, not just a talk show host,but a legend(传奇) among talk show

hosts.  Look also at Sally Fields,who has recently admitted her problem with shyness. This is a woman

who has appeared in many films,TV shows and interviews,yet in her early years she was so shy that she

tumed down a lunch invitation from Jane Fonda because she was terribly afraid of meeting her.

      I guess that our shyness is there because each of us is bom with some msecurity(不安全感) and this

insecurity prevents us from reaching out to others the way people with a more open personality do. As we grow up and become adults,we allow our social skills to grow and develop. But we are still stuck in kindergarten or elementary school or wherever it was when our shyness took root in our soul.

1. In the author's view,shyness can be explained as ______.

A. a disease that can be easily cured        

B. a not very normal mental condition

C. an emotional disability                    

D. something we pick up after birth

2. The author believes it's a waste of time to _____.

A. develop a healthy personality            

B. talk with as many people as possible

C. study where shyness comes from      

D. look for ways to do away with one's shyness

3.  Which of the following is TRUE of Johnny Carson?  

A. He dared to speak in front of a national audience.

B. He did away with his shyness carefully.

C. He was described as a hero in some legend books.

D. He failed to become a good talk show host.

4. The passage tells us that Sally Fields was ______

A. proud all the time                            

B. impolite when young

C. shy in her early years                        

D. close to Jane Fonda

5. The author thinks that our shyness is there because ______.

A. we are not open enough                    

B. we don't feel safe at heart

C. we try to reach out to others all the time    

D. we lack certain social skills

精馏段操作线方程中，对其斜率描述正确的是（）。

A.R/（R+1）

B.R/（R-1）

C.1+1/R

D.1-1/R

PMC承包商在项目策划决策阶段的主要工作内容之一是（）。

A.审批项目可行性研究报告

B.编制项目筹资计划

C.审批项目建议书

D.与商业银行签订贷款协议