一根铁丝用去一半，再用去一半剩9米，这根铁丝长（）米。

阅读理解。

      If you often feel tired and the doctor can't find anything wrong with you, you may be in a state of

sub health (亚健康). Sub health is a state between health and illness. Most of the sub healthy people

are middle-aged ones who are usually stressed out because of work and family. And some of them

are students who are having exams.       

       For example, you should get up early and go to bed early. And you should exercise regularly.

Exercising can keep you healthy. As for meals, it is better to eat less salt and sugar. Vegetables, fruit

and fish are important to your body. You should eat more of them. It is not good to eat too much at

one meal, because it may cause unhealthy changes in the digestive tract ( 消化道). And at last, a

balanced diet is very helpful in staying away from sub heath.  

根据短文内容，选出最佳选项回答问题。

1. How may you feel if you're sub healthy?           

A. Happy.                    

B. Comfortable.            

C. Tired.                    

D. Sad.

2. According to the passage, who will probably be sub healthy?            

A. Teachers and students.            

B. Parents and children.            

C. Middle-aged people and students.            

D. The young and the old.

3. What should you do if you are sub healthy?            

A. Relax and have good living habits.            

B. Go to see the doctor and ask for some medicine.            

C. Go to hospital in foreign countries.            

D. Stay at home and not talk to others.

4. If you want to have good living habits,____.            

A. you need to get up early and go to bed early            

B. you should exercise very often            

C. you should eat less salt and sugar and eat more vegetables, fruit and fish            

D. All above.

5. What is the main idea of the passage?            

A. What is sub health?            

B. How to keep away from sub health.            

C. How to keep sub healthy.            

D. Why are you sub healthy

根据《标准施工招标文件》，施工合同履行过程中发生过程中发生过程变更时，由（）想承包人发出变更指令。

A.监理人

B.业主

C.设计人

D.变更提出方

小儿出生后生长发育速度最快的时期是

A．新生儿期

B．婴儿期

C．幼儿期

D．学龄期

E．学龄前期

变更请求可能来自（）

A、对项目章程的审核

B、对执行项目的组织的战略计划的回顾

C、项目团队解决问题的技能要得以提高

D、范围定义出错或遗漏

对于已达到预定可使用状态但尚未办理竣工决算的固定资产，待办理竣工决算后，若实际成本与原暂估价值存在差异的，应调整已计提的折旧。( )