把3：0.25化成最简单的整数比是______：______，它的比值是____

阅读理解。

     This is a picture .In the picture you can see some hills (小山), trees and a school. You can see some boys and girls.

They are at school. The school is HongXing Middle School.   Lingling is twelve.  Fangfang is twelve, too. They are in

the same class. They are good friends. Miss Gao is their teacher.

1. _________is Fangfang and Lingling's teacher.

A. Miss Wang    

B. Miss Gao  

C. Mr Smith      

D. Mr Gao

2. The boys and girls are________________ .

A. at school      

B. at home  

C. behind the hill  

D. under a tree

3. Lingling and Fangfang are_____________.

A. in different classes    

B. in different grades    

C. eleven      

D. good friends

4. They're in_____________ 

A. HongXing Middle School    

B. hongxing middle school

C.HongXing school          

D. Hongxing middle school

5. The hills ,trees, the school and the students are _________ .   

A. in a book      

B. on the blackboard  

C. in a picture        

D. in the wall

一辆汽车沿平直公路从甲站开往乙站，启动加速度为2 m/s²，加速行驶5 s后匀速行驶2 min，然后刹车，滑行50 m，正好到达乙站，求汽车从甲站到乙站的平均速度为多少？

根据中文和首字母及所给单词写出句中所缺单词，每空一词。

1. The Sixteenth Asian Games have been held in Guangzhou ________ (成功).

2. What useful ________ (建议) it is!

3. -Do you have any ________ (最新的) news about Liu Xiang? ---I'm afraid not. I know as much as you do.

4. The number of the students in our class is about ________ (四分之三) of that in his class.

5. Every day my father spends over an hour ________ (锻炼).

6. My father minds d________ him when he is working.He needs quiet places.

7. He is not at all s________ with the lazy robot and he wants to return it to the robot shop.

8. Would you please r________ him for the Most Helpful students? Everyone is happy with him.

9. His spoken English is e________. How did he learn such good English?

10. —Have you read Han han's works r________? It's very popular online. 

     —Really? I will read them when I am free.

11. How did he feel when he heard the ________ (surprise) news?

12. Our English teacher was ________(honor) with many awards for her hard work.

13. The more you eat, the ________ (fat) you will be.

14. Our own planet, Earth is becoming more and more crowded and ________ (pollute).

15. Sandy got a lot lf presents at her ________ (twenty) birthday party.

一氧化碳中毒首选抢救措施为（）

A.应用脱水剂

B.应用利尿剂

C.使用高压氧舱

D.迅速离开中毒环境

E.应用呼吸中枢兴奋剂

挖掘机液压缸缸径变大，活塞杆直径和工作压力均不变，液压缸的作用力如何变化（）。

A.变大

B.变小

C.不变

D.不一定