安全防护、文明施工措施费用，是指按照国家现行的建筑施工安全、施工现场环境与卫生标准和

阅读下面的短文，然后根据短文内容选择最佳答案。

Editor: Today our topic is part-time jobs. Are they good for school children or

not?

Headmaster: Certainly not. Children have got two full-time jobs already:

growing up and going to school. Part-time jobs make them so tired that they fall

asleep in class.

Mrs. Barrens: I agree with you. I know school hours are short, and there's

homework too, so children need a lot of sleep.

Mr. Barrens: Some students stay at school until they're eighteen of nineteen. A

part-time job can't harm them. In fact, it's good for. They earn their

pocket-money instead of asking their parents for it. And they see something of the

world outside school.

Businessman: You're quite right. Boys learn a lot from part-time jobs. And we

mustn't forget that some families need the extra money. If the students don't take

part-time jobs, they can’t stay at school.

Editor: Well, we have got two for and two against. What do our readers think?

1. How many people join the discussion?

A. Five    

B. Four  

C. Three    

D. Two

2. Who have the same opinion?

A. Mr. and Mrs. Barrens.            

B. Editor and Mr. Barrens.

C. Headmaster and Mrs. Barrens.      

D. Businessman and Headmaster.

3. Where can you find this kind of discussion?

A. In a newspaper.

B. At school.

C. On the radio.

D. In a book.

维生素K不能用于

A．严重肝硬化

B．双香豆素过量

C．继发性凝血酶原缺乏

D．新生儿出血

E．梗阻性黄疸

在易燃、易爆、易灼烧及有静电发生的场所，可以使用化纤防护用品。

封土是皇陵的一个十分显著的特征，大体经历三个变化过程：（）

A.方上

B.以山为陵

C.门楼牌坊

D.宝城宝顶

运输是露天矿生产中最重要的环节。