汽车通常由发动机、底盘、车身、电气设备四部分组成，其中，发机的作用是（）。 A.将动
题型：单项选择题
问题：
汽车通常由发动机、底盘、车身、电气设备四部分组成，其中，发机的作用是（）。
A.将动力传给车轮
B.使燃料燃烧而发出动力
C.保证汽车正常行驶
D.保证汽油机点火
题型：单项选择题
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