基站着火时，是否可以开窗，是否需要断电，用什么灭火器扑灭小火（）A.不可以.要.12

阅读理解。

     Our school isn't very big, but it is very beautiful (漂亮). There are a lot of trees in it. I'm in Class Two,

  Grade Seven. The walls of our classroom are white. There is a blackboard and some pictures on the

 wall. Our classroom is very clean (干净). There are 45 students in my class. Mr. White is our English

 teacher. He is from England. I like English very much. Mr. White is very friendly (友好) to us. He likes

  China and he learns (学习) Chinese now. He can speak some Chinese. My father and mother are English

  teachers, too. They often help me with my English.

     My classmates (同学) are very friendly. We are all friends. We like our school class.

1. There are _____ in my school.

    A. many trees

    B. 45 students

    C. two classes

2. Mr. White is _____ .

    A. an American teacher

    B. my teacher

    C. English

3. My father is _____ teacher.

    A. my

    B. a Chinese

    C. an English

4. I like _____ very much.

    A. English

    B. my teachers

    C. my friends

5. Our school is _____ .

    A. not beautiful

    B. not big

    C. behind my home

请从氮气、氧气、二氧化碳、二氧化硫四种气体中选择合适的，按要求填空：

（1）属于空气污染的气体是______． 

（2）焊接金属常用作保护气的是______．

（3）能支持燃烧的气体是______． 

（4）绿色植物光合作用吸收的气体是______．

在分娩过程中，给产妇导尿为血尿可诊断子宫破裂。

患者，女，36岁，已婚。输卵管妊娠破损已2个月余，妊娠试验阴性，盆腔包块局限缩小。下列治疗措施欠妥的是（）

A.破瘀消癥

B.宫外孕Ⅱ号方口服

C.下腹部物理治疗

D.药物保留性灌肠

E.腹部宜用冷敷法

资信证明是由（）出具的，用以证明企业的资金、信用等级情况的书面材料。

A、会计师事务所

B、企业

C、银行

D、法人