曲线y=sinx(0≤x≤π)与x轴所围成图形的面积为( ) A.1 B.2 C.π2

题型:选择题

问题:

曲线y=sinx(0≤x≤π)与x轴所围成图形的面积为(  )
A.1B.2C.
π
2
D.π
考点:定积分的概念及几何意义
题型:选择题

主题匹配(共5小题;每小题2,满分10分)

阅读下面5段语言材料,从A到F选项中找出与它们相对应的标题。

小题1:You should say “Thank you” when someone gives you the food on the table, when someone keeps the door open for you, when someone says you have done your work well, or you have bought a nice thing, or your city is very beautiful.

小题2:Kitty is a 12-year-old girl. She wants to be a dancer. Every day she dances for two hours. She always has some bread and milk for breakfast. She eats many vegetables and fruits. She doesn’t eat much meat. She wants to keep fit.

小题3:When you learn English, the most important way is to use it. You can keep a diary every day. Try to speak English as often as you can. Never be shy. You can practice speaking it with your classmates and your teachers in or after class.

小题4:On Children’s Day an American woman took her little son to Zhongshan Park. There were too many people there. The woman couldn’t find her son soon, she had to ask the police for help. With the help of the policeman, she found her son at last. She thanked the police very much.

小题5:Some people say that laughter is the best medicine. Scientists are beginning to agree with this. Many doctors believe that laughter helps us get better when we are sick.

题型:选择题

下列关于氧气获得方法的叙述,错误的是(  )

A.植物的光合作用是空气中氧气的主要来源

B.工业上从液态空气中得到氧气的过程是化学变化

C.实验室用双氧水制氧气,常用二氧化锰作催化剂

D.加热高锰酸钾可以得到氧气

题型:选择题

下列品种,没有防腐作用的是( )

A.30%甘油
B.苯甲酸
C.对羟基苯甲酸丁酯
D.1%吐温80
E.20%乙醇

题型:选择题

未曾在中国境内上市销售的药品的注册申请属于()

A.新药申请

B.进口药品申请

C.补充申请

D.仿制药申请

题型:选择题

计算并填写表5-3。

表5-3 IP地址计算表

IP地址119.187.156.43
子网掩码255.224.0.0
网络地址(41)
主机号(42)
直接广播地址(43)
子网内第一个可用IP地址(44)
子网内的最后一个可用IP地址(45)

 

43()

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