Unit 4 Don’t eat in class分课时练习（含中考链接及答案）

中小学教育资源及组卷应用平台



Unit 4 Don’t eat in class
Section A

基础训练（夯实基础 循序渐进）
Ⅰ. 根据句意及首字母提示补全单词
1. We must follow the school r __________.
2. It’s i________ to learn English well.
3. The two brothers often f________ at home, Mom is very unhappy．
4. You must w_________ sports shoes for PE class.
5. Don’t stand o__________. Come in, please!
II.用所给词的适当形式填空
1. ________ (not be) late for the meeting, please.
2. He has to _______(arrive) there before ten o’clock?
3. Tom and his father often _______(swim) in the afternoon.
4. My uncle can’t _______ (drive) a car.
5. She ________(not like) playing basketball.
III.下列各句中均有一处错误，请找出并改正
1. Don’t listen to music in the classroom and the hallways. ________________
2. What does your sister usually do at school nights?
________________
3.We have to quiet in the school library. ___________
4. I think there are too much rules at my home.
________________
5. Tom doesn’t like math, too. ________________? 　　　　　　
IV.单项选择
1. --_______run in the hallways, Tom.
--Sorry, Mrs. Clark.
A. Can’t B. Doesn’t C. He can D. Don’t
2. He is never _______class.
A. arrive B. late for C. arrive late D. late
3. The bus leaves at 7 o’clock. We have to______ the station early.
A. talk to B. get out
C. arrive at D. think of
4. _______ play football in the street. _______football in the street is dangerous.
A. Don’t, Playing B. Not, Playing
C. Don’t, Play D. Not to, To play
5.—I hear that you have to go to bed before nine o’clock in the evening.
—Right. It’s one of my family’s ______.
A. plans B. jobs C. programs D. rules
专项过关（揭示规律 系统操练）
Ⅰ.根据括号内的要求完成下列各题，每空一词(含缩略形式)。
1. Don't be late for school.（改为同义句）
Please be _________ _________ for school.
2. We can't run in the hallways.（改为祈使句）
_________ _________ in the hallways.
3. Ride your bike to school. (改为否定句)
_______ _______ your bike to school.
4. You can’t play the violin here. (改为祈使句)
_______ _______ the violin here.
5 We have to read in the classroom. (对划线部分提问)
______ ______ you have to ______ in the classroom?
6. Jill goes to the chess club every Saturday. (对划线部分提问)
_______ _______ Jill _______ to the chess club?
II.根据汉语意思完成句子，每空一词(含缩略形式)。
1.不要和你的同学打架。
________ ________ with your classmates.
2.你为什么上课总是迟到？
Why do you always _______ _______ _______ class?
3.我能准时到那儿。
I can get there ________ ________.
4.我们必须在音乐室听音乐。
We ______ _______ _______ music in the music room.?
5.我们不能在教室里跑。
We ________ ________ in the classroom.?
能力提升（培养能力 综合提升）
Ⅰ . 用方框中的词或短语的正确形式填空。
listen to, on time, arrive, wear, important
1. We can’t late for class.
2. School rules are very to us.
3. Jane always school uniforms.
4. Please get to school .
5. We can’t music in class.
Ⅱ. 单项选择。
1.All of us______ pay to get into the swimming pool.
It’s free.
A. can’t B. mustn’t
C. might not D. don’t have to
2. --John, hurry up! Or we’ll miss the early bus.
--Oh, no. We _______cross the street until the traffic lights turn green.
A. mustn’t B. needn’t C. should D. can
3. —Hurry up. It’s almost time for school.
--Don’t worry. We are sure to be at school ______.
A. at times B. on time
C. all the time D. by the time
4. Don’t ______late _____class!
A. be, on B. is ,for C. be , for D. is ,to
5.--Don’t run in the hallways, Jim.
--______, Mr. Liu.
A. Excuse me B. Sorry
C. That’s all right D. Right
Ⅲ. 根据句意用适当的介词填空。
1.I can’t go out ______ school nights.
2.We usually walk home ______ school.
3.The students in our city go to school ______ 8:00 am ______ 5:30pm.
4.What do you usually do ______ home ______Saturday?
5.They have to be ____bed ____10:30 ____night, or （否则）they can’t get up early next morning.
Ⅳ. 棍据图片完成句子。

1. _________ before you finish your homework at home.


2. _________ on school nights.


3. I often _________ late on _________.

4. I have to _________ on weekends.
Ⅴ. 从Ⅱ栏中选出I栏各句的应答语。
I
1. Can we eat in school?
2. Can students eat in the hallways?
3. Do we have to wear a uniform?
4. Don't eat in the classroom.
5. What are the rules?
6. How was the food there?
7. What do you think of sitcoms(情景喜剧)？
8. Do I have to wear a helmet?
9. Where did you go on vacation?
10. Does she have to go to bed by 10:00?
II
A. Yes, they can.
B. Yes, she does.
C. No, we can't today.
D. Yes, you do.
E. Museums.
F. Sorry, sir.
G. Yes, we do.
H. Don't arrive late for class.
I. It was awful.
J. I love them.
VI.从方框中选出恰当的选项补全对话。
A. That’s right. B. What about you? C. But there are lots of rules. D. Don’t eat in the classroom and don’t arrive late for school. E. Do you have to wear the school uniform?
A: Hi, Helen.
B: Hello, Cindy. What do you think of your new school?
A: It’s great. 1._______________?
B: Then can you tell me some of the rules?
A: Sure.2._______________
B: Well, I can’t be late for school, either. 3.__________?
A: No, I don’t. 4._______________
B: I have to and I can’t wear a hat in class.
A: These rules are strict.
B: But they are good for us.
A: 5._______________ See you.????
B: See you.
VII．根据短文内容, 从方框中选择恰当的单词填空。
either, feel, terrible, before, follow
My name is Jim Brow (?http:?/??/?www.21cnjy.com?)n. I’m a teacher. I know students have to 1.________ many rules at school. They can’t be late for school. They can’t eat in class, 2.________. They have to clean the classroom 3.________ they leave the school. They think it’s 4.________. I know how they 5.________. But schools make these rules to help them.
VIII．阅读短文回答问题
?Funny school rules in the world
3. Every school has its own(自己的) rules. Most rules are the same. But some are different. And some rules are funny to us. Here are some funny school rules:
★Strict Japanese rules
5. Most Japa (?http:?/??/?www.21cnjy.com?)nese schools ask students _______(穿，戴) uniforms. Some schools even regulate(规定) the colour of underwear(内衣)! Other Japanese schools tell students that they can not go to movies, leave home at night or play video games at home. 　
★Different shoes in US
At some US schools, (?http:?/??/?www.21cnjy.com?) students must have a pair of indoor(室内) shoes at school every day. This can keep the schools clean.
★No strange hair in UK
4. In some British (?http:?/??/?www.21cnjy.com?)schools, students can’t wear strange hairstyles(头型). But the students can wear strange hairstyles during the World Cup years.
任务一：根据短文内容回答下列问题。
1.What funny school rules are there in some schools of Japan?
___________________________________
2. Why must the students in some US schools wear indoor shoes?
___________________________________
任务二：将文中划线的句子翻译成汉语。
3. ____________________________________
4. ____________________________________
任务三：完成句子。
5. ________





Section B

基础训练（夯实基础 循序渐进）
Ⅰ根据句意及汉语提示完成句中所缺的单词
1. You must come back _________（在……前）10:00.
2. Don't be _________（吵闹的）in the classroom.
3. -I will take a test.
–Good _________（运气）.
4. Can you _________（记得）his phone number?
5. Today I _________（感觉）very well.
II. 用括号中所给单词的适当形式填空。
1. The classroom is too _________ (noise).
2. Don't keep the boy __________ (stand) so long.
3. He always has good ______?（lucky）in his business (生意).
4.I have to practice ______ (speak) English every day.
5. Please remember _________ (close) the window.
III. 单项选择。
1. Remember _______your homework here, Jim.
A. to take B. to bring C. taking D. bringing
2. The room is _______. Let’s clean it now.
A. dirty B. small C. big D. clean
3. Amy has to go to bed ______10:00 every night. She can’t go to bed too late.
A. after B. before C. in D. on
4. I have ______ rules in my home. We have ______ homework to do today.
A. too many, too much B. too much , many too
C. too many, much too D. much too, many too
5. Her mother is very strict __________her.
A. at B. on C. in D. with
IV. 根据汉语意思完成英语句子，每空一词。
1. 我的父母对我的妹妹要求很严格。
My parents ________ ________ ________ my sister.
2. 你没有必要今天就去那里。
You __________ _________ to go there today.
3. 在晚上不要出去。
Don't ________ ________ at night.
4. 他每天练习游泳两个小时。
He ________ ______ for two hours ______ _____.
5. 请记得遵守学校里的规定。
Please _______ ______ ______ the school rules.
能力提升（培养能力 综合提升）
Ⅰ.根据句意及首字母提示完成单词。
1. The room is d__________. You must clean it.
2. I want to r__________ at home. I'm too tired(累).
3. Please speak slowly. I can’t f______ you.
4. My mother is cooking in the k__________.
5. Her mother always does the d__________ after dinner.
Ⅱ. 从方框中选择恰当的短语填空，有的需要变换形式, 每个限用一次。
go out, make breakfas (?http:?/??/?www.21cnjy.com?)t, do the dishes, practice the guitar, clean the room
1. Jim has a guitar and he ________ for an hour every evening.
2. Alice has to _________ after dinner on weekends.
3. Anna often helps her mother ________ in the morning.
4. My cousin can’t ___________ to play on school days.
5. Tom _________ every day, so it’s very clean.
Ⅲ. 单项选择。
1.The running water makes the stones ______very smooth. A. sound B. taste C. smell D. feel
2. It’s important ________ the school rules.
A. follow B. following
C. to follow D. to following
3. Little Tom can’t go out _______school nights.
A. at B. on C. in D. for
4. –How long can I ______the book?
—Two days.
A. borrow B. keep C. lend D. keeps
5. I have to practice ________ English every day.
A. speak B. to speak C. speaks D. speaking
Ⅳ. 句型转换
1. Please eat in the dining hall（改为否定句）
__________ __________ in the dining hall.
2. Linda has to go to bed by ten o'clock（改为一般疑问句）
________ Linda _______to go to bed by ten o'clock?
3. Tom has to clean the room.（对画线部分提问）
________ _______ Tom _______ to ________?
4. I can clean the room on Sunday.（对画线部分提问）
__________ ________ you _______ on Sunday?
5. We can listen to music in the music room.（对画线部分提问）
__________ __________ you listen to music?
. Ⅴ. ?情景交际：从方框中选择正确的答案完成对话。

A. but I have to be home by ten o’clock. B. And I can’t watch TV after school. C. And I have to practice my guitar every day. D. I can’t go out on school nights. E. I can’t hang out with my friends after school.
Dave: Can you go to the movies tonight, Emily?
Emily: No, I can’t. 1
Dave: Oh, that’s too bad. I can go out, 2
Emily: You’re lucky. I have so many rules…
Dave: Like what?
Emily: 3
Dave: Really?
Emily: Yeah, I have to do my homework after school.
Dave: Oh, I do, too. 4
Emily: Well, I have to clean my room every weekend.
Dave: Ugh.
Emily: 5
Dave: I can’t, either.
VI. 短文填词。从方框中选择适当的词填空。
rule, practice, join, after, lucky, for, on, read, before, early
Emily has to follow s (?http:?/??/?www.21cnjy.com?)o many 1 . She has to do her homework 2 school. She can’t go out 3 school nights (?http:?/??/?www.21cnjy.com?). She has to wash the dishes after dinner, then she can watch TV 4_____ half an hour. She likes 5 . She usually reads at night. She has to be in bed 6 ten o’clock because she has to get up 7 the next morning. She 8 a music club. She has to 9 her guitar every day. She doesn’t think she’s 10 .
VII. 阅读理解
Dear Tom,
I don’t have a good time at my new school. There are too many rules at my school. We have to get to school at seven o’clock every morning. We can’t play games in the classroom after class. We can’t listen to music in the hallways. I don’t like playing the piano, but I have to learn the piano in the music class. And we have to wear uniforms at school. We also can’t eat outside, we have to eat in the dining hall. The food there is awful. I can’t stand the rules here. I never have fun. What can I do?
yours
Bob
1. What does Bob have to do at 7:00?
A. Read English B. Play games
C. Eat breakfast D. Get to school
2. “I don’t have a good time at my new school” has the same meaning as ________.
A. I am not good at learning
B. I have a good time at my new school
C. I am not a good student
D. I never have fun at my new school
3. Which one is true according to the passage?
A. We play games in the classroom after class
B. Tom likes playing the piano
C. Bob has to learn the piano in the music class
D. Tom thinks the food there is awful.
4. Where can Bob eat at school?
A. In the dining hall. B. Outside
C. Classroom D. anywhere as he likes
5. Can Bob listen to music at school?
A. Yes, he can. B. We don’t know.
C. He can listen to music in the hallways
D. No, he can’t
中考链接（体验中考 稳操胜券）
一、单项选择
1. Lily often helps her mother do some cooking in the ______.(江苏淮安)
A. kitchen B. garden C. bathroom D. bedroom
2.When an earthquake happens, I think the most important safety ________ is to keep calm. (浙江温州)
A. rule B. doubt C. condition D. problem
3. Their classroom is as as ours.(四川雅安)
A. cleaner B. clean
C. the cleanest D. much cleaner
4. —John, don’t throw the rubbish on the floor. We should keep the school .
—Oh, sorry. I won’t do it again.(广西贵港)
A. busy B. noisy C. dirty D. clean
5. My English teacher is always strict ______us. (四川攀枝花)
A. in B. at C. with D. about
6. We must get up early we can catch the first bus to school. (辽宁丹东)
A. so that B. such that
C. in order to D. in order
7. For our own safety, it’s important to _____ the traffic rules on the way to school. (安徽)
A. follow B. change C. make D. break
8. Smart phones _________ in the classroom. (黑龙江大庆)
A. aren’t allowed B. aren’t allowing
C. allow D. is allowed
9. Let’s _______ a noise, someone is sleeping. (黑龙江齐齐哈尔)
A. not make B. no making C. not to make
10. You _______ take me to the station. My brother’s taking me. (江西)
A. can’t B. mustn’t
C. shouldn’t D. don’ t have to
11. —The oranges sweet.
—Of course. They are from Yongxing, Chenzhou. (湖南郴州)
A. taste B. eat C. drink
12. —_______ run in the hallways, Mike.
—Sorry. Ms. Clark. (湖南湘西)
A. Don’t B. Please C. No
13.Tommy, _____ play basketball in the street next time. You may get hit by a car. (广东)
A.do B. don’t C. must D. mustn’t
14. —Don’t eat junk food. It’s bad for you. —___________.(云南昆明)
A. Sorry, I won’t B. Sure, I will
C. Take it easy D. Never mind
15. —Don’t throw paper on the floor.
—______(甘肃白银)
A. Good idea. B. Sorry, I won’t.
C. Cheers! D. No way!
16. Which sign of the following means “No smoking”? (江苏宿迁)
A. B.
C. D.
II.根据句意完成句子。
Last night I doing my homework till 11 o’clock. (广西南宁)
III.根据句意及汉语提示，填写句中所缺的单词。(山东滨州)
The Party members should be _______ (严格的) with themselves.
IV.用括号内所给单词的适当形式填空。
1.__________ (wash) your hands before meals. (甘肃兰州)
2.When night came, they put up a tent _______ (keep) warm.(江苏无锡)
V.1根据汉语意思完成句子。
1.. 她对自己要求非常严格。(湖北随州)
She is very _____ ______ herself.
2. 别吃太多垃圾食品，这对我们的健康有害。(福建福州)
Don’t _______ too much junk food. It is _______ for our health.










Unit 4 Don’t eat in class
Section A

基础训练
Ⅰ. 1. rules 2. important 3. fight 4. wear 5. outside
II.1.Don’t be 2. arrive 3. swim 4. drive 5. doesn’t like
III. 1. and改为or 2. at改为on 3. to后加be
4. much改为many 5. too改为either
Ⅳ.1. D 解析：句意：汤姆，不要在走廊里跑。否定祈使句在句首加上don’t即可。故选D。
2. B 解析：句意：他从不上学迟到。be late for=arrive late for意为“……迟到”。故选B。
3. C 解析：句意：公共汽车在7点钟就要开了。我们必须早点到车站。arrive at意为“到达”，后跟at，接小地方；后跟in，接大地方。
4. A 解析：句意：不要在街上踢球。在街上踢球是很危险的。否定祈使句在句首加上don’t即可。动名词作主语，故选A。
5. D 解析：句意：—我听说你在晚上九点前要上床睡觉。—对。这是我家的家规之一。plans“计划；打算”；jobs“工作”；programs“节目；安排”；rules“规则”。故选D。
专项过关
Ⅰ. 1. on time 2. Don’t run 3. Don’t ride? 4. Don’t play?5. What do; do? 6. When does; go
II.?1. Don’t f (?http:?/??/?www.21cnjy.com?)ight ?2. arrive late for? 3. on time? 4. must listen to ? 5. can’t run
能力提升
Ⅰ . 1. arrive 2. important 3. wears 4. on time
5. listen to
Ⅱ. 1. D 解析：根据“It’s free today.今天它是免费的。”可知没有必要花钱进游泳池的。
2. A 解析：根据句意及交通知识可知我们一定要等交通灯绿了才能穿过街道。故选A正确。
3. B 解析：A项“有时”；B项“准时”；C项“一直”；D项“到……时”。根据前一句可知“我们”可以确定能准时到校的。
4. C 解析：be late for 意为“迟到”。Don’t 后需跟动词原形be。故选C。
5. B 解析：句意：吉姆，不要在走廊里跑。对不起，刘老师。选B。
III. 1. on 2. from 3. from, to 4.at, on
5. in, at, at
IV. 1. Don’t watch TV 2. Don’t eat outside. 3. get up, Sundays 4. clean my room
V. 1~5 CAGFH 6~10IJDEB
VI. ?1~5 CDEBA
VII．?1. follow? 2. either? 3. before? 4.terrible 5. feel
VIII．
1. Some schools (?http:?/??/?www.21cnjy.com?)even regulate the color of underwear! Other Japanese schools tell students that they can not go to movies, leave home at night or play video games at home.
2. This can keep the schools clean.
3. 每所学校都有自己的规定。
4. 在一些英国学校里，学生不能留奇怪的发型。
5. to wear






Section B

基础训练
Ⅰ1. before 2. noisy 3. luck 4. remember 5. feel
II. 1. noisy 2. standing 3. luck 4. speaking 5. to close III. 1.B 解析：remember to do sth.意为“记得去做某事”；remember doing sth.意为“记得做过的事”。
2. A 解析：句意：房间脏了，让我们现在来打扫吧。故只有A项符合题意。
3. B 解析：句意：Amy必须每晚十点之前睡觉。她不能睡得太晚。before意为“在……以前”，故选。
4. A 解析： too many 修饰可数名词的复数形式；too much修饰不可数名词。而rules是可数名词，homework是不可数名词，故选A。
5. D 解析：be strict with sb.意为“对某人要求严格”。
IV. 1. are strict with 2. don’t have 3. go out 4. practices swimming, every day 5. remember to follow
能力提升
Ⅰ. 1.dirty 2. relax 3. follow 4. kitchen 5. dishes
Ⅱ. 1. practices the g (?http:?/??/?www.21cnjy.com?)uitar? 2. do the dishes? 3. make breakfast? 4. go out ?5. cleans the room
Ⅲ. 1. D 解析：考查连系动词辨析。句意：那流动的水使得这些石头______非常光滑。sound听起来；taste尝起来；smell闻起来；feel感觉。根据常识知，判断石头是否光滑需要去感觉、触摸。故选D。
2 . C 解析：句型It is +形容词+（for sb.) +to do sth意为“对某人来说做某事是……”。
3. B 解析：on school nights是固定搭配。意为“在学校的夜晚”。
4. B 解析：根据答语“两天。”可知此处要用延续性动词keep，而不能用短暂性动词borrow或lend。
5. D　解析：practice doing sth.意为“练习做某事”。句意：我每天不得不练习说英语。
Ⅳ. 1. Don’t eat 2. Does, have 3. What does, have, do 4. What can, do 5. Where can
Ⅴ. 1~5 DAECB
VI. 1. rules 2. after 3. on 4. for 5. reading
6. before 7. early 8. joins 9. practice 10. lucky
VII. 1. D 解析：根据第三句“We have to get to school at seven o’ clock every morning.”可知选D。
2. D 解析：句意：他在新学校过的不快乐，只有选项D 是过的不愉快的意思，故选D。
3. C 解析：由中间一句“but I have to learn the piano in the music class”和信的署名Bob可知答案应是C，其他均不正确。
4. A 解析：由“we have to eat in the dining hall”可知答案是A。
5. B 解析：文章中只说We can’t listen to music in the hallways.，至于在学校里没有提到，故选B。
中考链接
I.1. A 解析：考查名词辨析。句意：莉莉经常在厨房帮助她的妈妈做饭。kitchen意为“厨房”；garden意为“花园”；bathroom意为“洗手间”；bedroom意为“卧室”。根据句意中“do some cooking”可知，是在厨房做饭，故答案为A。
2. A 解析：考查名词辨析。句意：当地震发生时，我认为最重要的安全_______是保持冷静。rule规则； doubt疑问；condition条件；problem；问题；形容词the most important safety后面跟名词，由句意可知选A。
3. B 解析：考查形容词比较等级的用法。句意：他们的教师和我们的一样干净。clean表示干净的；cleaner是clean的比较级，更干净；as…as表示和……一样，用于等级比较，中间用形容词或副词的原级。故选B。
4.D 解析：考查形容词辨析。句意为：—约翰，不要把垃圾扔在地面上。我们应该保持校园____。—哦，对不起，我不会再这么做了。A繁忙的；B嘈杂的；C脏的；D干净的。由句意“不要把垃圾扔到地面上”可推知：我们应该保持校园清洁，故选D。
5. C 解析：考查介词用法。句意：我的英语老师总是严格要求我们。be strict with sb.固定词组，意为“对某人严格要求”。故选C。
6. A 解析：考查连词用法。句意：我们必须早起，以便于能赶上第一辆公交车去学校。so that连在一起引导目的状语从句，没有such that连用情况，可以分成such…that表示如此……以致于，引导结果状语从句；in order to后接动词或动词短语相当于so as to，引导目的状语从句，可以转换成in order that或so that引导的从句。故选A。
7. A 解析：考查动词辨析。句意：为了我们自身的安全，在上学的路上，______交通规则是很重要的。follow(the rules)遵守(规则)；change(the rules)改变(规则)；make(the rules)制定(规则)；break(the rules)违反(规则)。既然是为了自身的安全，那么在穿过马路时就应当遵守交通规则。故选A。
8. A 解析：考查动词语态。句意：不允许在教室里带智能手机。主语是Smart phone是动作allow的承受者，要用被动语态而且主语是复数。故答案为A。
9. A 解析：考查非谓语动词。根据let可知考查let sb. not do句型。句意：然我们不要制造噪音，有人正在睡觉。故选A。
10. .D 解析：考查情态动词辨析。句意为：你______带我去车站了。我妈妈带我去。由后文文意可推知：“你”不用带我去车站了，can’t不能；mustn’t一定不要；shouldn’t不应该，don’t have to没有必要，分析句意可知选D。
11. A 解析：考查系动词的用法。句意：“那橘子吃起来很甜。”“当然，它们来自郴州永兴。”由空白处后的形容词sweet可知，前面可以用连系动词而不用行为动词eat或drink；taste作连系动词意为“吃起来”。故选A。
12. A 解析：考查祈使句。句意：—不要在走廊里跑，迈克。—对不起，克拉克老师。分析句子结构知，本句为祈使句，祈使句是用动词原形开头的，否定句用don’t…。故选A。
13. B解析：考查祈使句。句意：汤米，下次不要在街上踢足球了。汽车可能会撞着你。在祈使句中，肯定句用动词原形，否定句以don’t开头。
14．A 解析：考查交际用语。句意：—不要吃垃圾食品了。它对你是有害的。—________。A.对不起，我将不会了；B.当然可以，我将会； C.慢慢来；D. 不要紧。否定祈使句的回答应该为Sorry, I won’t。
15. B解析：考查交际用语。句意：—不要把纸扔在地上。—抱歉，我不这样做了。Good idea. 好主意；Sorry, I won’t. 抱歉，我不会这样做了；Cheers! 干杯！No way!没有办法，结合语境可知应选B。
16. B 解析：考查标志的识别。句意：下面哪个标志表示“禁止吸烟”。四个选项都是警示标志，图A是“禁止游泳”；图B指“禁止吸烟”；图C表示“禁止拍照”；图D表示“禁止停车”。故选B。
II. kept
III.strict
IV.1. wash
2. to keep
V.1. strict; with
2. eat; bad




















HYPERLINK "http://21世纪教育网(www.21cnjy.com)
" 21世纪教育网(www.21cnjy.com)