用联系的、发展的观点看问题，（）。 A.是马克思主义科学世界观

搜题请搜索小程序“爱下问搜题”

问题多项选择题

用联系的、发展的观点看问题，（）。

A.是马克思主义科学世界观的一个基本原则

B.要求我们必须确立辩证的思维方法

C.关键是要掌握唯物辩证法关于联系、发展和矛盾的观点

D.是科学的实践观的内在要求

答案

参考答案：B, C

阅读理解

阅读理解。

Look at this photo. This is a photo of my family. There are five people in it, my father, my mother,

my two sisters and I. My brother is Bob: He is 21 years old. My two sisters are twins (双胞胎). They are l6.

One of them is Gina ,and the other is Jane. I am l2. My name is Tom Brown.

My father is a doctor (医生). He likes his work. He is 45. My mother is a teacher. She is in No.6 Middle

School. My parents work (工作) hard (努力). We study very hard, too.We are very happy.(幸福).

1. How many people are there in the family?

A. Four.

B. Five.

C. Six.

D. Seven.

2. —How old is Bob?

—He is ______.

A. 21.

B. 16.

C. 45

D. 12.

3. Where does Tom's mother work?

A. A hospital.

B. A.school.

C. A post office.

D. A shop.

4. —Who is Jane?

—She's Bob's ______.

A. mother

B. aunt

C. grandmother

D. sister

5. —How old is Gina?

—She is _______.

A. 21.

B. 16.

C. 45

D. 12.

填空题

以现场常用的空呼器气瓶容积为6.8L，充气压力30MPa为例，（假设佩戴者为高强度劳动强度，耗气量为60L/min）该空呼器能使用的时间为（）（min）。