下列方面中，属于中国企业实施并购活动所面临的最主要陷阱是（）。A、战略规划不当 B、管

小伟遇到这样一个问题，如图1，在梯形ABCD中，AD∥BC，对角线AC，BD相交于点O。若梯形ABCD的面积为1，试求以AC，BD，AD+BC的长度为三边长的三角形的面积。

小伟是这样思考的：要想解决这个问题，首先应想办法移动这些分散的线段，构造一个三角形，再计算其面积即可。他先后尝试了翻折，旋转，平移的方法，发现通过平移可以解决这个问题。他的方法是过点D作AC的平行线交BC的延长线于点E，得到的△BDE即是以AC，BD，AD+BC的长度为三边长的三角形（如图2）。参考小伟同学的思考问题的方法，解决下列问题：

如图3，△ABC的三条中线分别为AD，BE，CF。

（1）在图3中利用图形变换画出并指明以AD，BE，CF的长度为三边长的一个三角形（保留画图痕迹）；

（2）若△ABC的面积为1，则以AD，BE，CF的长度为三边长的三角形的面积等于_______。

在水利水电工程施工进度计划中，( )是确定工程计划工期、关键线路、关键工作的基础，也是判断非关键工作机动时间和进行计划优化、计划管理的依据。

A．施工进度管理控制曲线
B．工程进度曲线
C．网络进度计划
D．横道图

根据短文内容,选择正确答案.

   It is important to have good human relationships. Good human reiationships mean that you get well with

the people around you. Most people say that they like you. Very few people or even nobody says that

they do not want to be friends with you .

  What helps to build good human relationships? Personality(人格)comes first of all. If you are open, warm and helpful, people will like you a lot. They welcome such personality.

Being, humorous(幽默) also helps you to have good human relationships among people. Jokes help to

make people; laugh. Laughing is good for health. A famous Chinese saying goes: If you laugh once, you

will be ten younger, If you enjoy playing .jokes on others and your jokes make them unhappy ,they will not like you.

   Good health helps to build good relationships, too. People always like to stay or work with a healthy

person If you are often sick, that means you can't always work together with others. So it is really

important to exercise often to stay healthy.

1.This passage is all about         .

A. good human relationships      

B. good health

C. good personality              

D. playing jokes on others  

2.What does the phrase  " human relationships" mean in Chinese?

A．身体状况      

B．知足常乐

C．风趣幽默      

D．人际关系

3. If a person is open, warm and helpful, then this person          .

A. is friendly                  

B. has a bad mood

C. doesn't have too many friends

D.tolks a lot about himself

4. Is it right to play jokes on other people to make them feel bad?

A. Yes, it is right.

B. No, it isn't right.

C. It's not right, but it's nol. very wrong.

D. The text doesn't answer this question.

10. flow many ways does the text tell us to build good human relationships?

A. Only one.                  

B. Two.

C. Three.                      

D. More than three.

一般来说，行业因素是影响股票投资价值的外部因素。( )

驾驶人有使用其他车辆检验合格标志嫌疑的，交通警察可依法扣留车辆。