牛津版九上英语Unit 1 Wise men in history 词汇拓展+知识同步+语法提升训练（无答案）

Part 1 词汇复习与拓展
一、按照提示填写出下列单词。
1. He still can't work out the problem_________________(尽管) he has tried his best.
2. We need to improve our _________________(able) if we want to live better.
3. Can you offer me some _________________(建议). It will be of great value to me.
4. If you want to stay ____________________(live), do as I tell you.
5. The plane was flying _________________(在...上方) the clouds.
6. As soon as they_________________(到达) ,they couldn’t wait to climb the mountain.
7. It’s hard for me to sleep now. I’ve kept ______________(wake) for half an hour.
8. We can never do anything _________________(违反) school rules.
9. Keep silent. The teacher looks ___________________(angry) at the moment.
10. Do you know why he is ____________________(缺席) from school today
11. He’s ________ (严重的) ill. We must send him to the hospital quickly.
12. The food should be put in some place ________ (在... 以下) zero.
13. _________ (通过) showing us the pictures, she wanted us to do something for wildlife.
14. The pain was almost more than she could ________ (忍受).
15. Now the _________ (begin) of many novels are very attractive.
16. I could feel my heart ___________ (beat) fast when I noticed a stranger following me that night.
17. As soon as hearing the _______________(背景)music, some girls began to cry.
18. You should never hit the ___________ (气球) with the ___________ (竹子) stick.
19. How ___________she is ! Everyone is attracted by the ___________of the dance.(美丽)
20. In the ___________ (begin), I really felt ___________ (bore) of such a ___________ (bore) film.
Part 2 U1同步学习
一、重点词汇
true adj. 真的 --- truth n. 真相
correct adj. 正确的 --- correctly adv. 正确地
agree v. 同意 --- agreement n. 同意
gold n. 黄金 --- golden adj. 金色的
box v. 打拳击 --- boxing n 拳击运动
confirm v.确认 --- confirmation n 证实
Please v. 让某人开心 --- pleased adj. 开心的
certain adj.确定的 --- certainly adv. 确定(地)
weigh v重量为 --- weight n 体重；重量
invite v.邀请 --- invitation n 邀请
exact adj.准确的 --- exactly adv. 准确地
二、重点短语
be happy with 对....满意的
fill ...with ... 用...把...装满
run over 溢出
send... to prison 把...关进监狱
make sure 确保；设法保证
seem to do 似乎；好像
think about 考虑
think of 想出
improve one’s work 改进某人的工作
make sth. for sb. 为某人制作某物
find out 找出；查明
solve a problem 解决问题
run into 流入
be certain that.. 确定...
tell the truth 说实话
go ahead 前进，进行
be amazed at 对...感到惊讶
1ed..to... 把...带到...
set off 离开
三、同义词
less= a smaller amount of 少于
bowl= deep round dishes 碗，盆
agree with=have the same opinion with 同意
displace- take the place of 取代
be happy with= be pleased with=be satisfied with 对...感到满意
be filled with=be full of 充满 fill.... with...= make...full 把...用....充满
doubt=not feel sure 怀疑
at first=at the beginning 开始
certain=sure 确定
trick=fool 愚弄
【核心词汇】
1.doubt (v.)
原文呈现：Later, however, he began to doubt that it was a real golden
doubt此处用作及物动词，意为“不能肯定，对……无把握”。
扩展：
①doubt用作不及物动词，意为“怀疑”，其后常接of,about。
②doubt后接宾语从句时,名词从句用if/whether引导，名词从句也可用that引导。
课堂小测：
1她怀疑那个新闻的真实性。
___________________________________________________________________________
她一定来，我不怀疑。
_______________________________________________________________________________
2.seem (v.)
原文呈现：“This problem seems difficult to solve.
扩展：
seem用作连系动词，意为“似乎，好像”，本句中后接形容词作表语。
seem用作实意动词，可接to do sth
It seems+that从句，其中it是形式主语，that引导的从句做真正主语。
课堂小测：
汤姆看上去是一个非常聪明的男孩。
______________________________________________________________________________
2.他似乎在唱歌。
_______________________________________________________________________________
3.似乎没有人知道在公园里发生了什么。
________________________________________________________________
3.fill (v.)
原文呈现：
Archimedes was still thinking about this problem as he filled his bath with water.
fill-filled（过去式）-filled（过去分词）
扩展：
fill A with B = A be filled with B =A be full of B 充满...
课堂小测：
1.瓶子里装满了水。
The bottle ________________________ water. = The bottle _________________________water.
4.solve (v.)
原文呈现：“I know how to solve the king’s problem!”
solve-solved（过去式）-solved（过去分词）
常见搭配：solve this problem
课堂小测：
1.人类有能力解决环境问题。
_______________________________________________________________________________
5.trick (v.)
扩展：
既作动词，也作名词，意思不同。vt. 作弄，戏弄；n. 把戏；手段；套路，诡计
课堂小测：
他经常捉弄他的妹妹。
_______________________________________________________________________________
6.be made of (Phrasal Verb.)
原文呈现： “Is it made completely of gold ”he wondered.
be made of 看得出原材料 The table is made of wood. 这张桌子是由木头做成的
be made from 看不出原材料 The wine is made from grain. 这酒是用粮食酿造的。
扩展：
课堂小测：
Books are made paper while paper is mainly made wood.
of;of B. from;from C. of;from D. from;of
7.be happy with (Phrasal Verb.)
原文呈现：
At first, he was very happy with it.
扩展：
be happy with sb./sth 意为“对某人或事物满意的”=be pleased/satisfied with sb./sth
课堂小测：
他的老师对他很满意。
His teacher him.=His teacher him.
8.send... to prison (Phrasal Verb.)
send... to prison: put... into prison 把……关进监狱
◇举例
You will be sent to prison if you break the law. 如果你违法，就会被关进监狱。
◇扩展
be in prison在狱中
课堂小测：
He prison for five years. 他已经坐牢五年了。
9 mistake 错误
◇举例
However, sometimes it is silly of you not to forgive others for their mistakes. 然而，有时候不原谅别人的错误是愚蠢的。
◇常用短语
（1）make a mistake 犯错误
Tom made a mistake now. 汤姆刚刚犯了一个错误。
（2）by mistake 错误地
I took your umbrella by mistake. 我错拿了你的雨伞。
◇近义词
error n. 误差；错误
课堂小测：
（1）我不小心错拿了我哥哥的钢笔。（汉译英）
____________________________________________________________________________
（2）如果我犯错误，你一定要告诉我。（汉译英）
____________________________________________________________________________
核心句式
原文呈现：1.He sent it to Archimedes and asked him to find out the truth.
send sb. sth.= send sth. to sb.。
动词接双宾语时，有两种结构：
① 动词 + 间接宾语(sb.) + 直接宾语(sth.)
② 动词 + 直接宾语(sth.) + 介词(for/to) + 间接宾语(sb.)
能接双宾语的动词可分为两类：
① 常用介词to的动词有：send; give; show; bring; show; teach; tell等。例如：
give sb. sth. = give sth. to sb. show sb. sth. = show sth. to sb.
② 常用介词for的动词有：buy; sing; make; cook; get等。例如：
buy sb. sth. = buy sth. for sb. make sb. sth. = make sth. for sb.
课堂小测：
他教我法语。
_______________________________________________________________________________
（2）我给妈妈买了一个礼物。
_______________________________________________________________________________
原文呈现：2.I know how to solve the king’s problem!
how to solve the king’s problem是“疑问词 + 不定式”结构，在句中作know的宾语，它相当于“疑问词 + 宾语从句”。
扩展：
动词不定式与疑问词who; which; when; where; how; what等连用，常用于tell; show; know; teach; learn; explain等后作宾语，构成“疑问词 + 动词不定式”结构，它所表示的动作通常是未发生的，所以在转换成宾语从句时，通常要加情态动词或用将来时态。
课堂小测：
他不知道怎么解释这个决定
_______________________________________________________________________________
他不知道该说什么。
_______________________________________________________________________________
原文呈现：3.He put the gold into. one pot, and some. water ran into the bowl. Then he put the crown into the other pot.
one..the other..的意思是“(两者中的)一个.....另一个。
扩展：
辨析 other, the other, others, the others和another
1）other表示“别的”，“另外的”,多与名词复数连用。
the other表示“两个中的另一个”，表示特指,总数为两个
3）others表示没有明确范围的“另外的人或事 物”。相当于other+名词复数。
4）the others是“其余的”意思，指“所有其余的人或事物”，是特指，相当于
the other+名词复数
5）another表示总数为三个或三个以上中任意的“另一个”，表示泛指。
课堂小测：
（ ）1. I wore the wrong shoes. One was black,and ________ was white.
A. other B. another C. the other D. the others
（ ）2. -This room is too small. I'd like to ask for _______.
－Sure. We have rooms available here.
A.another B. the other C.one D.it
（ ）3.The twins are in different classes. One is in Class One and is in Class Two.
A.another B.other C.the other D。others
词汇精练
I. 英汉互译。
1. at first ___________________ 2. be happy with ___________________
3. be made of ___________________ 4. 用……把……装满___________________
5. 一个……另一个……___________________ 6. 溢出___________________
7. make sure ___________________ 8. both…and…___________________
9. something else ___________________ 10. find out ___________________
II. 根据句意及首字母和汉语提示写出所缺单词。
1. I’m quite in ___________(同意) with your decision.
2. The police sent him to ___________(监狱) .
3. He is weak in grammar, and often makes m___________.
4. I can’t s___________ the problem alone. Can you help me
5. Is this ___________(真的) gold
6. I want to tell you the t___________.
7. Do you d___________ that he will keep his word
8. The ___________(金属) looked like gold, but in fact it was valuable.
9. Mr. Smith saved the boy in the water. And he was a b___________ man.
10. I’d like a large b___________ of beef noodles.
III. 用括号内所给单词的适当形式填空。
1. She wore a ___________(gold) necklace.
2. Have you done it Tell me the ___________(true).
3. We have ___________(little) rain this year than usual.
4. He seems ___________(know) everything.
5. Yesterday she ___________(hit) him on the head.
IV. 根据汉语提示，完成英语句子（每空一词）。
1. 我们必须查明真相。
We must ____________ ____________ what the truth is.
2. 当你遇到困难时，可以请警察帮忙。
When you are in trouble, you can ____________ the police ____________ help.
3. 这个桌子是木制的。
The desk is ____________ ____________ wood.
4. Tom过去常常早上7点起床。
Tom ____________ ____________ get up at 7:00 a.m.
5. 我们的老师对我们的作业很满意。
Our teachers ____________ ____________ ____________ our homework.
6. 当她洗澡的时候，一些水溢出来了。
When she got into the bath, some water ____________ ____________.
7. 警察把那个小偷关进了监狱。
The police ____________ the thief ____________ ____________.
8. 这同我上周丢失的那支钢笔一样。
This is ____________ ____________ pen ____________ I lost last week.
Question tags反义疑问句
原文呈现：
1. Archimedes was a famous scientist,wasn't he
2. He didn't make the crown with gold,did he
3. The train has left,hasn't it
4. You'll forgive him,won't you
总结：
一、什么是反意疑问句
英语中，反意疑问句是由陈述句和附在其后的附加疑问句组成。其中附加疑问句是对陈述句所说的事实或观点提出疑问，起证实作用，一般用于证实说话者所说的事实或观点。翻译为“是吗”
2.反意疑问句的回答，回答时，如果情况属实，用Yes加上反问句的倒装肯定句；若果情况不属实，则用No加上反问句的倒装否定句。例如
You were moved by your students, weren’t you
情况属实：Yes, I were. 情况不属实：No, I weren’t.
二、反意疑问句中问句部分的动词与陈述部分的动词在语气上成相反的对应关系，即：肯定+否定？ 否定+肯定？如：
1.You can’t do it, can you
2.They are very late for the meeting, aren’t they
三．当陈述句中含有be动词，助动词，或是情态动词时，反问句部分由这些词加上主语人称代词构成，
Be动词包括：am, is, are, was, were
助动词有：do, does, did, have（用在完成时）, has（用在完成时）等
情态动词有：can, could, may, might, must, will, would, shall, should
例如：
She is a lovely girl, isn’t she
He will go home, __won’t__ __he__
She doesn’t like to eat popcorn, __does__ _she___
The baby won’t sleep early, will it
注意： ①He has supper at home every day, he (不能用hasn’t he )
②They have known the matter, they (不能用don’t they )
四．当陈述句中只含有行为动词时，若动词加了s,就用does, 若动词为原形，就用do,动词为过去式，则用did,例如：
You cleaned your house last week,
Your father plays the computer very well,
They look so happy today,
五．反意疑问句的陈述部分带有little, few, never, hardly, seldom，nobody, nothing, barely, scarcely等否定意义的词时，问句部分用肯定式。如：
①She never tells a lie, she
②He was seldom late, he
六、反意疑问句的陈述部分为I am……时，问句部分习惯上用aren’t I？表示。
如： I am a very honest man,
七．陈述部分的主语为不定代词something, anything, nothing, everything时，问句部分的主语用it。如：
①Something is wrong with the computer,
②Nothing has happened to them,
八、陈述部分的主语为不定代词somebody (someone), anybody (anyone), nobody (no one), everybody (everyone)时，问句部分的主语用he或 they，这时问句动词的数应和he或 they一致。如：
①Someone has taken the seat,
②Everyone has done their best in the game,
九．陈述部分为祈使句
1）若为let’s引导，反问句用shall we 例如
Let’s go home together, shall we 让我们一起回家，好吗？
2）若为let us引导 和其余的任何一般的否定祈使句，都用will you, 例如
Let us stop to rest, will you 让我们停下休息，好吗？
Don’t make any noise, will you 别弄出噪音，好吗？
3）一般的肯定祈使句则用will you 或won’t you 都行，例如：
Do sit down, won’t you / will you 请坐，好吗？
You feed the bird today, will you 今天你喂鸟，是吗？
Please open the window, will you (won’t you ) 打开窗，好吗？
十：陈述部分为There (Here) + be + 主语时，问句部分用动词+there (here) 形式。
①There are two cakes on the plate, aren’t there
碟子里有两块蛋糕，是吗？
②Here is a story about Mark Twain, isn’t here
这是关于马克吐温的故事，是吗？
十一：否定前缀不能视为否定词，其反意疑问句仍用否定形式。
It is impossible,
He is unkind to his classmates,
典型例题：
It’s very hot today, _______________
2. He can speak Chinese, _______________
3. Meimei studies in a middle school, _______________
4. He never gets up late , _______________
5. Don’t go out at night, _______________
6.He never loves cold weather , _______________
7. You finished the task yesterday, _______________
8.It _______________ a good day for swimming, is it
9.Tom has been to Singapore , _______________
10.The story is little interesting, _______________
11.Everything starts to grow in spring, _______________
12.He can hardly finish his homework, _______________
Part 3 提升练习
一、单项选择。
1．He used to ________ to school late，but now he doesn’t．
A．go B．going C．went D．goes
2．Please ________ the glass ________ milk．
A．fill；in B．filling；with C．fills；to D．fill；with
3．All the Chinese people must work hard ________ China Dream．
A．to realize B．realize C．realizing D. realized
4．The teachers asked us ________ football on the street．
A．don’t play B．not play C．not to play D．to not play
5．— Have you read today’s newspaper
— No，I haven’t．Is there ________ in it
A．something important B．anything special
C．new anything D．important something
6．His teacher isn’t happy ________ his explanation．
A．to B．in C．from D．with
7．Pudong International Airport is one of ________ airports in the world．
A．big B．bigger C．biggest D．the biggest
8．Look at the smog(雾霾)．________ bad weather it is!
A．How B．How a C．What D．What a
9．The maths problem is so hard．I really don’t know what ________．
A．do B．to do C．doing D．did
10．Don’t jump to a conclusion! Let’s ________ the problem first．
A．to discuss B．discussed C．discussing D．discuss
11．The two cities have reached an ________ to develop science and technology(技术)．
A．education B．excitement C．agreement D．invention
12．When you have difficulty，do remember to ________．Two heads are better than one．
A．make a decision B．give up
C．ask for help D．give advice
13．— Do you have enough students to clean the laboratory
— No，I think we need _______ students．
A．another B．two others C．more two D．two more
14．Let’s go to the cinema to see a film，________
A．will you B．shall we C．won’t you D．don’t you
15．— Your sweater looks nice．Is it made from wool
— Yes，and it’s made _______ Shanghai．
A．by B．in C．for D．from
二、语法选择
Stephen Hawking was born in Oxford, England on 8th January, 1942. He went to school in St Albans-a small city near London. ____1____ he did well, he was never top of his class.
After_____2_____school, Hawking went first to Oxford University where he studied physics, then he went to Cambridge University where he studied cosmology（宇宙学）. As he himself____3____, he didn't work hard. He was a very lazy student, and did very ____4____work. However, he still got good marks.
It was at the age of 20 that Hawking first noticed something was wrong with him. He started to bump into things. When he visited his family at Christmas time, his mother was ____5____worried that she made him see ___6___ doctor. Hawking was sent to hospital ___7___tests. Finally, the result came back. Hawking had motor neurone disease(运动神经元病）, a serious illness which would make him unable to speak, breathe or move without the help of a machine. Doctors said they had no way to ___8___ him. He would die before he was 23.
At first, Hawking became very ___9___. After a while, though, he began to see his life in a different way. _____10_____he later wrote, "Before I ______11______ about my illness , I had been very bored with life. There _____12_____ nothing worth doing. But shortly after I came out of hospital, I suddenly realized that there were a lot of worthwhile things I could do." _______13_______ a meaningful life, Hawking got married and found a job at Cambridge University as a professor. He strongly believes that his story shows that _____14_____, however bad their situation is, should lose hope. "Life is not fair, "he once said. "You just_____15_____ do the best you can in your own situation."
1. A. And B. Although C. But D. While
2. A. leaving B. to leave C. left D. leaves
3. A. admit B. admitted C. admits D. was admitted
4. A. a few B. few C. a little D. little
5. A. such B. very C. so D. quite
6. A. the B. an C. a D. /
7. A. with B. of C. on D. for
8. A. help B. to help C. helped D. will help
9. A. depress B. depressed C. depressing D. depresses
10. A. Like B. On C. In D. As
11. A. tell B. told C. was told D. am told
12. A. seems to have B. seemed to has C. seemed to be D. seemed to is
13. A. To live B. Living C. Lives D. Live
14. A. somebody B. anybody C. nobody D. everybody
15. A. could B. have to C. had to D. might
三、 完形填空
A young soldier, Robert Shurtliff, lay dying in a hospital bed. He was too 16 to speak or move. Two men stood over him.
"I think this young man has 17 , " one man said.
"I’ll take his jacket and boots, " said the other.
Robert gathered all of his strength to say, "I…I’m alive. "
The doctor came running over as Robert fell into a coma（昏迷）. "We can 18 him, " he said as he examined the young soldier, "Oh, my! He’s a 19 ! "
It was true. The young soldier, Robert Shurtliff, was really Deborah Sampson. But who was she
Deborah Sampson had grown up in Massachusetts, living as a servant. She 20 of having great adventures (冒险). When the Revolutionary War broke out in 1775, women were not allowed to serve in the army. But Deborah 21 herself as a man and became a solider. She called herself Robert Shurtliff.
One day, during an attack, Deborah was shot in the neck and 22 . Another soldier lifted Deborah into his horse and rode her to the 23 . A doctor treated the wound on her back and asked if she had any other injuries. Deborah lied and said no. She was afraid that if the doctor examined her leg, he would discover her 24 . Using a pocket knife, Deborah got the bullet（子弹）out of her own leg. She 25 to fight as a soldier.
After the war ended, Deborah got married and had children. But she still longed for adventure. So she put on her soldier’s uniform and travelled around the country telling of her life as young, brave soldier, Robert Shurtliff.
16．A．busy B．weak C．surprised D．strong
17．A．got up B．lost heart C．passed away D．got lost
18．A．accept B．kill C．support D．save
19．A．soldier B．mother C．woman D．father
20．A．died B．talked C．heard D．dreamed
21．A．worked B．dressed C．acted D．lived
22．A．arm B．hand C．leg D．stomach
23．A．hospital B．library C．studio D．bedroom
24．A．appearance B．ability C．beauty D．secret
25．A．failed B．continued C．agreed D．planned
Part 4 Homework
一、 翻译下列短语和句子
1. 用……把……装满 ____________________ 2. 溢出 ___________________________
3. 把……关进监狱 ____________________ 4. （对某人或某物）满意的_____________
5. 起初；最初 __________________________ 6. 由……制成 ______________________
7. 找出；查明 __________________________ 8. 考虑；思索 ______________________
1. 直到每个人都到齐了我们才开始讨论。
We _______ start our discussion _________ everybody arrived.
2. 我妈妈过去常常给我讲故事。
My mother _______ ________ ________ me stories.
3. 我不知道下一步要做什么。
I don't know _________ _________ _________ next.
4. 多么昂贵的一个皇冠啊!
_________ _________ _________ _________ it is!
5. 我有一只纯金制成的手表。
I have a watch _________ is completely _________ _________ gold.
二、写出下列句子的附加疑问句
1. I don’t think he will come, ____________
2. She seldom goes to the theatre, ____________
3. Do help yourself to some fruit, ____________
4. Let’s go shopping, ____________
5. Everything is fine, ____________
6. He has already come back to Australia, ____________
7. Your sister doesn’t get up early, ____________
8. There is little milk in the fridge, ____________
9. I am as tall as your sister, ____________
10. He has a lot of money, ____________
三、. 用所给单词的适当形式填空
1. What is your____________（weigh）, David
2. A shower uses____________（little）water than a bath.
3. The man spent the rest of his life in the____________（prisoner）.
4. You can find the____________（correctly）answers on Page 26.
5. To tell you the____________（true）, I don’t agree with you.
6. 1s this golden necklace____________（complete）made of gold
7. 1 know how____________（plant）roses from this book.
8. We all think that Mr King is the best crown____________（make）in the world.
Once when Sima Guang was a little boy, he was playing a ball with his friends in the courtyard.
A boy suddenly kicked the ball into a large vat (缸) 1. f__________ of water. All the children ran to the vat. They talked about how to take the ball out. “Let’s push the vat over! Come on! Come on!” One of the boys suggested. Others 2. a__________ with him. They tried to push the vat over, but it 3. s__________ to be too heavy to be moved. So another boy stepped on his friend’s shoulders to reach the ball. Accidentally, he fell into the vat. The children were 4. r__________ frightened and didn’t know how to 5. s__________ the problem. “I’ve got an idea!” Sima Guang shouted. He quickly came forward with a large stone in his hand. Then he hit the vat with it. The vat was broken, and the water flowed out. Luckily, the child was saved in the end.
Everybody praised Sima Guang for his cleverness and calmness.
四、阅读训练
Amy is a biologist(生物学家)working at a marine(海洋的) park. These kinds of parks provide fun and education for tens of thousands of people each year.
Amy takes care of many animals in the park, but she also does important research. As she observes the animals that she looks after, she learns more about their needs and behavior. This information helps the animals in the park, but it can also be used to protect other members of the species in the wild.
It's hard work to look after these animals. Their needs often change according to different hours of the day. So Amy must depend on her science knowledge and good number sense to help her make the right decisions all day long.
Even though dolphins spend much of their time underwater, they are mammals(哺乳动物). This means that they must come to the surface to take in air. Dolphins give birth to their young. They're not hatched from eggs. Just like all other mammals, mother dolphins must nurse, or feed milk to their babies.
Amy and her team know this first-hand. One of their dolphins recently gave birth. A baby dolphin is not small, either. It was almost 1 meter long the day it was born. A big dolphin usually eats about 4% of its body weight in food every day. Amy knows that a mother dolphin that is nursing needs twice the food. So when the baby dolphin was born, Amy immediately doubled the mother's food every day.
( )41. How much food does a 300 kg mother dolphin need every day
A. 600kg. B. 12kg. C. 24kg D. 52 kg.
( )42. What does Amy need to make the right decision according to this passage
A. Good eyes and quick mind.
B. Swimming skills and spirit of competition.
C. Love and care for animals.
D. Science knowledge and good number sense.
( )43. What does the underlined word "observes" in Paragraph 2 mean
A. nurses the young animals B. watches something carefully
C. plays with something D. says something about
( )44. Why is the information Amy learns very helpful
A. It helps to protect the animals in the park as well s those in the wild.
B. It offers fun and education to tens of thousands of people.
C. It helps dolphins to feed milk to their babies.
D. It helps underwater animals to come to the surface.
( )45. This passage is mainly about _____________.
A. dolphins' life and food B. Amy's job at a marine park
C. education in a park D. protecting animals in the wild
第二节、阅读填空（5分）
When people write in English, they use letters of the alphabet. People who write in Chinese however, use characters（文字）that stand for words or ideas. ____46___. The earliest forms were called “oracle bones”. These were animal bones marked with pictures and symbols. In addition to writing on bones, the Chinese also made marks on turtle shells（龟壳）. By 1400 BC, the Chinese writing system（系统） had become more complex. ____4____. Around 200 BC, Chinese characters became standardized. This means that everyone used the same characters.
____48___. For example, the character that means man in the Lishu system from 200 BC is similar to the character that means man from the Jiantizi or modern simplified system, of the twentieth century.
People have made efforts to change Chinese characters over the centuries. ____49____. The Chinese government simplified（简化）many characters so that more people could learn to read. This simpler system is used in mainland China and Singapore. ____50___. Even with these changes, Chinese writing from 2,200 years ago is still understood today.
A. It had more than 2500 characters
B. Historians believe Chinese writing began as early as 1500 BC
C. The most important changes happened in the twentieth century
D. Traditional characters are used in Taiwan Hong Kong, and Macau
E. Many modern Chinese characters are similar to those from 2,000 years ago