甲亢危象的表现是（） A.体温升高 B.心动过速 C.恶心、呕吐、腹泻 D.意识障碍

阅读理解。

     In China, more and more middle school students are getting shorter sleeping time than before. Most

students sleep less than nine hours every night, because they have much homework to do. Some homework

is given by their teachers, and some by their parents. Also, some students don't know how to save time.

They are not careful enough while they do their homework, so it takes them a lot of time. Some students

spend too much time watching TV or playing computer games. They stay up (熬夜) very late. Some students

have to get up every morning on weekdays to get to school on time by bus or by bike. It can be a long way

from home to school.

     School and parents should cut down some of the homework so that our children can enjoy more than

nine hours of sleep every night for their health. For children, we should make best use of our time. When

we have enough time for sleeping, we will find it much better for both our study and health.

1. What makes most students sleep less than 9 hours every night? [ ]

A. Watching TV.

B. Playing computer games.

C. Doing their homework.

D. Doing housework.

2. Who else gives children some homework to do except their teachers? [ ]

A. Their parents.

B. Other students.

C. themselves.

D. Nobody else.

3. How many hours of sleep is good for students' health? [ ]

A. 6

B. 7

C. 8

D. 9

4. What would happen to a student who often goes to bed late get up early?[ ]

A. He would fall asleep in class.

B. He would do well in study.

C. He would finish his homework fast.

D. He would have good health.

5. Which of the following is NOT true? [ ]

A. Some students are so careless (粗心) that they spend lots of time on their homework.

B. All the students stay up late for their homework.

C. Children should be given less homework.

D. Schools and parents should take care of children.

下列4种常见动物中，最高等的是（　　）

A．蜥蜴

B．金鱼

C．青蛙

D．猫

下列属于无效合同的是( ) 。

A．以欺诈、胁迫手段订立的合同

B．恶意串通，损害第三人利益的合同

C．显失公平的合同

D．乘人之危订立的合同

某电气装置安装工程项目。该工程项目包括：室外线路安装、室内线路安装、室内电缆安装以及硬母线安装等。该工程项目由某电力建筑安装工程公司承担施工任务。在施工过程中，当进行室外电缆敷设时，发现埋设的电缆深度不够，且有些部位应该有固定点埋件但没有。在试通电时，由于其中一根绝缘导线未绝缘，造成一名施工人员触电后死亡，随即展开了事故调查。

并列敷设电缆，有中间接头时应将接头（）。

A．交叉

B．平行

C．相触

D．错开

综合安全技术

我国铁路对车辆转向架侧架、摇枕实行寿命管理，凡使用年限超过( )年的配件全部报废。

A．10

B．15

C．20

D．25