8B Unit 6 同步练习
8B Unit 6 同步练习
Comic strip & Welcome to the unit
基础平台
Ⅰ.根据汉语提示和所给部分英文完成下列短语
1．一个有残疾的人 a person
2．一个盲人 a person
3．一个聋人 a person
4．一个无家可归的人 a person
5．一个上了年纪的人an person
6．一次慈善竞走 a walk
7．一次有意义的活动 a event
8．需要一些更多的食物need some food
9．支持慈善工作charities
10．横穿马路the road
II.用所给词的适当形式填空
1. Now, more and more people have the chance to go abroad for (far) study.
2. Please (donation) some of your pocket money to the children in poor areas.
3. It’s (use) to regret for what you’ve done.
4. Children, you should train (you) before the competition.
5. This is an (usual) story, do you want to listen to it?
6. Some (visit) will come to visit our school tomorrow.
7. They did (volunteer) work at children’s hospital last Sunday.
8. If you (not work) hard, you (not pass) the exam.
9. Listen! The piece of music (sound) great.
10. If you answer the question (correct), you can’t pass the exam (success).
III单项填空
1．— Must I my camera, Lily?
— No, you . Don’t worry. I’ll ta ke one myself.
A. to take; mustn’t
B. take; needn’t
C. to bring; needn’t
D. bring; mustn’t
2. — What a beautiful watch! Is it new?
— No, l have it for 2 years.
A. had
B. sold
C. borrowed
D. bought
3. Linlin often practises English chatting with her American friend.
A. in
B. by
C. for
D. with
4. Mary has a bad cold. She has to stay in bed.
A. a
B. /
C. the
D. an
5. Tom knew nothing about it his sister told him.
A. since
B. if
C. until
D. for
6. In Anhui, it’s hot in July, but it’s even in August.
A. hot
B. hotter
C. hoter
D. hottest
7.— When were you born?
— I was born the morning of May 7th,1995.
A. in
B. at
C. on
D. /
8.— Do you often plant tress in spring?
— Yes. Many tress in our school every year.
A. plant
B. are planting
C. are planted
D. be planted
9.—Don’t forget my parents when you’re in Beijing.
—OK! I won’t.
A. to see
B. seeing
C. seen
D. saw
10.—have you been learning English?
— I have been learning English for 6 years.
A. How long
B. How often
C. How soon
D. How far
拓展空间
Ⅳ.从方框中选出合适的句子完成对话
Lucy: 1 ?
Lily: Oxfam Trailwalker is a tough charity walk. 2 to finish it within 48 hours.
Lucy: 3 ?
Lily: It’s a fund-raising event. 4 to support Ben. His team needs to raise at least HK $6,000.
Lucy: Can I join it too?
Lily: 5 . You’re not 18 years old yet. 6 to join Oxfam Trailwalker.
Lucy: What are you going to do for Ben?
Lily: I’m going to donate my pocket money to support Ben. 7 to help him.
Lucy: I want to help Ben too. I can give him my bottle of milk.
Lily: 8 ?
Lucy: 9 to drink milk to keep fit.
Lily: 10 , Lucy, but I think Ben can exercise to keep fit.
V.根据所给汉语，完成下列各句
1. We can help blind people. (过马路)。
2. We can help (学好英语)
3. We can (好好照顾他们) when homeless people are ill.
4. We can (给他们让座) when we see elderly people on the bus.
5. We can (为他们捐钱) when poor people need our help.
6. We can (向他们伸出援助之手) when disabled people want to climb up the
steps.
Reading
基础平台
Ⅰ.单项填空
1. The World Cup every four years.
A. happen
B. take place
C. hold
D. is held
2. —Will you join the race in the sports meeting?
—I haven’t decided yet.
A. 100’s metres
B. 100-metre
C. 100-metres
D. 100 metre
3. Computers can information from place to place.
A. take
B. bring
C. carry
D. send
4. Tom doesn’t like the film , but his parents like .
A. himself; it
B. itself; themselves
C. itself; it
D. himself; themselves
5. It is important you to support and help each other, especially the event.
A. for; after
B. on; during
C. for; during
D. on; after
6. —I want to help the poor children in poor countries with my money.
—Oh, you are so kind. Please give them to .
A. WWF
B. UNICEF
C. ORBIS
D. OXFAM
7. Tommy was so careless. He make many mistakes in his homework, but now he is
more careful.
A. happened to
B. came to
C. wanted to
D. used to
8. It is beautiful here I don’t want to go back.
A. very; because
B. because; that
C. very; that
D. so; that
9. China is still a country.
A. develop
B. developed
C. developing
D. development
10. We must keep the classroom every day.
A. cleans
B. cleaned
C. clean
D. cleaning
Ⅱ.根据汉语意思完成句子
1.Hobo正在为一次慈善竞走训练。
Hobo for a .
2.因为你必须在48小时之内走完100千米，所以乐施会毅行者所从事的是艰苦的长途跋
涉。
Oxfam Trailwalker is a tough hike because you to finish walking a 100-kilo-metre trail 48 hours.
3.这是人们学习外语的一个极佳的机会。
It’s an excellent for people to learn a .
4.对他们来说，互相帮助是有必要的。
It is for them to help .
5.钱被用来帮助穷人。
The money is help poor people.
III.句型转换
1. Trailwalker has been one of Hong Kong’s biggest fund-raising events since 1981.(对画线部分提问)
2.Each team must raise at least HK $6,000.(对画线部分提问)
3. Why not try your best to help people in need?(用why don’t改为同义句)
4. To have support teams is useful.(改为同义句)
5. Trailwalker is organized by Oxfam Hong Kong.(改为主动语态)
拓展空间
Ⅳ.补全对话，每空只填一词
Millie and David are good friends, and now they are talking on the phone.
Millie: Hello!May I speak to David?
David: Speaking! Who’s that?
Millie: This is Millie. 1 have you been these days?
David: I’ve been to Qinghai wi th some students from another school in Wuhu
Millie: How long have you been there?
David: 2 a week.
Millie: What for?
David: For “Hand-in-hand”activity. We 3 money, books, pens and clothes from the students before we left. And we gave all these 4 our donations to help the children in the rural areas in Guizhou to go to school.
Millie: Oh, you’re great! What 5 did you do?
David: We lived together in their homes 6 of the hotels and we made friends with each other.
Millie: How exciting! What do you 7 of their life and study?
David: Although they live a hard life, they study very hard. 8 the way, what’s going on in your school?
Millie: We’ve just had our Mid-term Examination, but I didn’t pass it.
David: Don’t worry. If you study harder, you can9 up with your classmates.
Millie: I agree 10 you .Thank you. Bye!
David: Bye-bye!
Ⅴ.短文填空
Trailwalker is one of the biggest f 1 events in Hong Kong. It’s organized by Oxfam Hong Kong to r 2 money to help poor people. Every four people o 3 18 group themselves into a g 4 and join in the charity walk. People may have to w 5 two days and nights without sleeping. The trailwalkers have to walk t 6 eight country parks and m 7 than 20 hills and mountains. It is an e 8 chance for people to learn team s 9 .The members of a team must support and help each other before and d 10 the walk.
1. f
2. r
3. o
4. g
5. w
6. t
7. m
8. e
9. s 10. d
Ⅵ.阅读短文 ,判断正误,正确的写T 错误的写F
Do you know what Oxfam is? Where was it started? How many branches(分支)does it have? Do you want to know more about Oxfam?
Oxfam, formerly called National Famine Relief Committee, is an international organization to help the poor all over the world. It was founded(建立) in 1942 by a group of Englishmen to help people who were in trouble in Greece during the Second World War. At that time Greece was under the rule of the Nazis(纳粹分子).Many support groups were formed in England. When the war was over, the aim of the organization was enlarged. Now the organization has many branches around the world, such as Oxfam America, Oxfam Hong Kong and so on.
In England, Oxfam organizes many charity activities every year to raise money. It also runs many charity shops. The shops receive things donated by people and sell them to those who need them. The money from the sales will be used to help the homeless and the poor in different parts of the world.
Oxfam Hong Kong organizes Traiwalker every year to collect money for the poor in Hong Kong and some other areas in the world.
1.Oxfam was founded in 1942 by a group of Frenchmen.
2.Now there are many branches of Oxfam around the world.
3.Oxfam raises money only by selling things in the charity shops.
4.After the war, the aim of the organization is to help poor people in poor countries.
5.Oxfam Trailwalker is one of the activities to raise money.
V ocabulary
基础平台
Ⅰ.把Ⅰ栏与Ⅱ栏中的单词搭配，组成新的单词
ⅠⅡ
1. post a. end
2. hand b. day
3. week c. man
4. some d. writing
5. trail e. able
6. suit f. raising
7. with g. walker
8. fund h. out
Ⅱ.用适当的介词填空
1. A support team can provide us food and drinks during the walk.
2. You should take part more activities to improve your English.
3. She is not interested science.
4. What do you think Chinese food?
5. The captain grouped them a team of five people.
6. It’s raining heavily ,take an umbrella you.
7. least HK$ 6.000 is needed to pay for it.
8. Football is played all the world.
9. Can we be different each other some times?
10. Knives are used cutting things.
III.根据要求有所给词适当形式填空
1. Do you know what the (aim) of the activities are?
2. The walk (it) is very hard ,but we need to try our best.
3. Come back, please. It’s dangerous for you to swim any(far).
4. The government should do something to help those (home)people.
5. The park was so big that the little girl was soon (lose).
6. You must finish your work (with) 48 hours.
7. If you are (interest) in hiking, don’t miss this chance.
8. Finishing the homework in such a short time is (possible).
9. The Great Wall is (know) around the world.
10. This is a good place for us (meet) friends.
11. It’s cold outside. You need (wear)warm clothes.
12. Remember (turn) off the radio before leaving the room.
13.Call me if you (arrive) in Shanghai tomorrow.
14.Are you used to (get) up at 6.00 am?
15.It’s wise(take) a map and a mobile phone with you. They’ll be useful.
拓展空间
Ⅳ.同义句改写
1.Can you tell me the way to the new bus station?
Can you tell me to the new bus station?
2.The weather in China is different from that of Australia.
The weather in China is not that of Australia.
3.Sonw covers the ground in winter.
The ground snow in winter.
4.They had a good time at Linda’s birthday last night.
They at Linda’s birthday last night.
5.Why don’t you talk to him again?
talk to him again?
V.翻译句子
1.对你们来说，在活动开始之前和活动期间有必要相互支持、相互帮助。
2.有支持队伍给你们带来食物和饮料是很有用的。
3.暖和且干燥的衣物对你们途中保持舒适也是必要的。
4.为什么不去尽力帮助需要帮助的人呢？
5.这次步行开始之前你们进行几个月的训练是必要的。
Grammar
基础平台
I.单项填空
1．—go to the theatre together with me?
—Good idea.
A. How about
B. Why not
C. Why do
D. What about
2．I have a cousin in a town in China.
A. we lives
B. who live
C. he live
D. who lives
3. the population of Hebei Province?
A. What’s
B. How many
C. How much
D. What number is
4. The population of Japan is than that of China.
A. more
B. smaller
C. fewer
D. bigger
5. My father has to Beijing. He will stay there for two weeks.
He has there three times.
A. been; been
B. been; gone
C. gone; gone
D. gone; been
6. Of all the boys, Tom spent time and made mistakes.
A. less; few
B. the least; the fewest
C. much; many
D. fewer; less
7. Mrs. Li is one of in our school.
A. more popular teachers
B. the most popular teachers
C. most popular teacher
D. a popular teacher
8. of the boys in our class go to school by bike.
A. Two fifth
B. Two-five
C. Two-fifths
D. Five two
9. Dictionaries are good your study.
A. to
B. of
C. about
D. for
10.—What’s the police station’s telephone number?
—I can’t remember. Look in the telephone book , please.
A. it for
B. it over
C. it up
D. at it
11. is a good way of studying.
A. Reading
B. Read
C. Reads
D. The read
12. —May I speak to Danny?
—Sure. , please.
A. Hold
B. Hold on
C. Hold of
D. To hold on
13. Keep and you’ll succeed in the end.
A. trying
B. to try
C. tries
D. try
14. Thank you very much your help.
A. of
B. with
C. about D .for
15. Can you tell me now?
A. what time is it
B. what time it is
C. what is the time
D. the time is what
II.用of 或for填空
1. It is necessary you to improve your English.
2. It is nice the old man to donate so much money.
3. It’s lucky you to pass the exam.
4. It’s important little boys to practise before they can walk.
5. It is good the elderly to take more exercise.
III.改错题（每题只有一处错误，划出并改正）
( ) 1. I’m also thinking of join Oxfam Trailwalker this year.
A B C
( ) 2. I always find that necessary to do something for others.
A B C
( ) 3. I have joined the Helping Hand Club for nearly 2 years.
A B C
( ) 4. Isn’t it excited to be a member of World Vision?
A B C
( ) 5. I often help blind people across the road if I meet them on the street.
A B C
( ) 6. I think it’s easily for everyone to help others.
A B C
( ) 7. I think donate money to charities is helpful, isn’t it?
A B C
( ) 8. Even though it takes some time , but we will try our best.
A B C
IV.句型转换
1. To laugh at that disabled boy is impolite. (改为同义句)
2. It is helpful to give seats to the elderly. (对画线部分提问)
3. It is good for us to eat more vegetables. (改为一般疑问句)
4. It is possible for Mike to join Oxfam Trailwalker.(改为否定句)
5. It is easy. Millie can work out the math problem.(合并句子)
拓展空间
V.完形填写
When a group of people work together to reach the same goal, they make up a team. Team spirit is very important as men try to learn more about the world in which we 1 .
In 1957, a team of eighteen men from the United States 2 the winter 3 the South Pole. They were there 4 the secrets of the earth and the sky.
At the South Pole, the sun 5 rises during the winter. The men had to face the darkness of six-month nights as well as the world’s worst 6 .
The men lived in a group of buildings joined together by tunnels. They were cut off from the rest of the 7 . During the long winter, they could not be reached even by a plane.
The men depended on one 8 .Everyone took turns to work in the " snow mine(矿)".There, they dug out 9 snow needed as water supply.
Each man also had his own important job to do. There was a cook and a doctor. There were scientists and men who were 10 in other jobs .Working together ,they proved that men can live and work at the South Pole.
1. A. have B. live C. notice D. turn
2. A. spent B. cost C. paid D. took
3. A. at B. in C. over D. on
4. A. learning B. learn C. to study D. study
5. A. once B. sometimes C. not D. never
6. A. temperature B. weather C. snow D. sunshine
7. A. world B. city C. village D. gold
8.A. the other B. other C. an other D. another
9. A. clean B. cleanest C. clearly D. cleaned
10. A. training B. trained C. train D. to train
VI.翻译句子
1.你可以联系李老师以获取更多的信息。（further）
2.请在15号或15号之前交回表格。（return）
3.前10名到达者会得到奖牌。（first ）
4.如果你对远足感兴趣，不要错过这次机会。（miss ）
5.即使路途遥远，我也会坚持。（keep walking ）
Integrated skills
基础平台
I.从方框中选用恰当的词组，并用其正确形式完成句子
1. I don ’t think it ’s right poor people.
2. She often encourages me some charity events.
3. There are 0.3billion old people in China.
4. It ’s important for people because they should have a healthy body if they want to succeed.
5. We should wild animals because their number is becoming smaller and smaller.
6. We ought to young people a better world.
II.单项填空
1．When the traffic light is red, we mustn ’t the street.
A. through
B. though
C. cross
D. across
2. I have only one cake here. I need during the walk.
A. some one
B. much
C. some more
D. more two
3. The Olympic Games every four years in different countries.
A. take place
B. hold
C. are taken place
D. are happened
4. The young men learned from this charity walk.
A. lots of
B. lot of
C. a lot
D. a lot of
5. The chemistry teacher(化学老师) asked the students to pay more attention to the lab clean.
A. kept
B. keeps
C. keep
D. keeping
6. Lots of children ’s lives because of Project Hope in China.
A. were changed
B. changed
C. changing
D. was changed
7. We shouldn ’t the blind people. We should help them.
A. take care of
B. look down on
C. take care
D. look after
8. The trip to Beijing us about three hours by plane.
A. spent
B. cost
C. took
D. paid
9. You can go shopping with me if your homework before 5 p.m.
A. is done
B. will be done
C. does
D. will do
10. I’ll have a chance go to Beijing to watch Olympic Games in August.
A. to
B. of
C. on
D. during
11. —go fishing with me tomorrow?
—Good idea.
A. How about
B. Why not
C. What about
D. Why do you
12. very important to learn Engl ish well because it’s an international language now.
A. It
B. It’s
C. That is
D. We are
13. It is important have our own support team.
A. that we
B. of us
C. that us to
D. for us
14.—Would you like this charity walk?
—Yes, .
A. join; I’d like to
B. to join; I’d love to
C. join; I’d like
D. to join; I’d love
15. —Why don’t you like the speech?
—It’s one that I have ever heard.
A. the most interesting
B. so interesting
C. more interesting
D. the least interesting
III.按要求改写下列句子
1. Helping the children in poor countries is important.
important us to help the children in poor countries.
2. Fund-raising events are meaningful to organize.
organize fund-raising events.
3. Children should receive good education.
It’s necessary receive good education.
It’s necessary that good education.
4. Do you know why we organize such charities?
Do you know we organize such charities ?
5. We really hope we can help them live better.
We really hope help them their life.
6. We don’t have enough members now. We need another two.
We don’t have enough members now. We need members.
7. There are three people in one group.
You can a team of three people.
You can three people.
8. Our event is held in October every year.
Our event in October every year.
拓展空间
IV.根据汉语提示完成句子
1.我相信南山对于慈善之行来说是一个完美的地方。
I that South Hill is the for the walk.
2.那是从公园传来的小提琴的声音。
It was the of the coming the park.
3.如果我们大清早去那里，我们甚至可以听到鸟歌唱。
If we go there in the , we may hear the birds .
4.对于十几岁的人来说，那么不是一次困难的步行。
It is not a walk for .
5.我们可以在空地上踢足球，也可以在平地上放风筝。
We can on space, and we can also on land.
V.根据情景完成对话
M: I’ve heard about a fund-raising event 1 Oxfam trailwalker.
T: Yes? What’s Oxfam Traiwalker?
M: It is the long walk in the country organized 2 Oxfam Hong Kong.
T: When did it 3 place at first?
M: In 1981.
T: 4 can join Oxfam Trailwlker?
M: People over 18 5 old. They have 6 finish the walk 7 48 hours.
T: It’s a difficult walk but I’m really interested 8 it. What do I need to 9 attention 10 if I want to join a charity walk?
M: You need to bring an umbrella, carry enough water, take a map and a mobile phone.
T: Thank you.
1. 2. 3. 4. 5.
6. 7. 8. 9. 10.
Main task
基础平台
I.根据首字母提示和上下文写单词
1. We call those people in their teens t
2. Wang Lin works hard on English and speaks p English.
3. My home is c to my school, so I don’t have to ride a bike to school.
4. A mobile phone will be u if you get lost.
5. No one could work it out . He was the o person able to do it.
II.
Simon: 1 shall 2 go for a charity walk this Sunday?
Millie: I prefer South Hill.
Simon: It sounds great.
Millie: Er, what do I need to pay attention to if I 3 to join a charity 4 .
Simon: First, pay attention to the 5 . 6 it be cold or rainy? Bring an umbrella if necessary.
Millie: 7 else do I need to do?
Simon: You must carry enough 8 . You need to drink a lot on your 9 . It’s also 10 to take a map and a mobile phone. They are very useful, especially if you get lost. Millie: Thank you, Simon.
拓展空间
III.阅读理解
Dear friends,
Thank you for your participation in Oxfam Trailwalker 2005, walking the tiring 100km trail with other 3, 863 people. It must be a good experience for all of you.
From the hot sunshine to windy night, you could always get support from your support teams in the event. And besides this ,over 3,000 volunteers were there to support you. There were more than 30 sponsors(主办者) and many Oxfam’s staff(工作人员) among them.
We had the hottest and most humid(湿的) day this year. The bad weather made lots of people give up. We would like to thank those people who lived up to the spirit “Never Give Up”! The statistic(统计) is as follows:
Start Finish %
Teams 966 644 67%
Persons 3864 3185 82%
And congratulations to the champion(冠军), Securicor, who wins the overall(所有的) champions three years in 12 hours 38 minutes, the 2nd runner goes to Sunshine Cosmoboys in 13 hours 20 minutes, the 3rd runner comes from Fire Service Team—finishing the walk in 13 hours 43 minutes. Please go to the website https://www.wendangku.net/doc/a818996107.html,.hk for the winners of other categories(类别)！
Oxfam Hong Kong is happy to have a Phoenix TV(凤凰卫视) staff team in Oxfam Trailwalker 2005. They will broadcast the Oxfam Trailwalker story on 26th November at 10 am.
Lastly, we would like to take this opportunity to thank our sponsors, supporting organizations and volunteers for their wonderful help.
Once again, we sincerely thank you and your teammates for your continued support for Oxfam Hong Kong. If you have more questions, please email to twinfo@https://www.wendangku.net/doc/a818996107.html, hk, fax to 25276213 or call us at 25202525.Thank you .
See you at Oxfam Trailwalker 2006!
Best regards,
Albert Chan
Fundraising Director
Oxfam Hong Kong 1. Who wrote this letter? What’s his position(职务)？
2．How many teams took part in Trailwalker 2005?
3. How many people finished this 100-km walk?
4. Which team won the first place?
5. Which TV station will broadcast this event?
6.将划线句子翻译成汉语。
IV.写作
假如你是Lily，你们班下周日将组织一次慈善步行，为穷困地区的孩子捐款，途中经过阳光公园和一些街道，5小时内将走20公里的路，这将是一次很艰难的步行。请你写一封信给你的好友Mary, 介绍这次活动，并询问她准备做什么。
要求：1、语句通顺、要点突出；
2、词数80个左右。
初一语文同步练习答案
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2、（1）由小树联想到自己即将到边疆生活、学习的孩子，心中感到欣慰。 4、把铁路修到拉萨去 我会填：分外继狂及昂废食装裹翼杯以 我会选：1、不是??而是 2、尽管??还是 3、观测 4、观察 我会改：1、隧道贯通了。 2、一夜之间大风把刚刚搭好的 150平方米的保温大棚撕扯得七零八落。3、突击队员制服了风火山这只巨大的拦路虎。 第一单元综合练习 一、马蹄拘束礼貌渲染欢呼抚摸洒脱新疆迂回低吟清晰勾勒三、美轮美奂一碧千里襟飘带舞始料不及翠色欲流杯水车薪银装素裹废寝忘食 五、1、一碧千里的草原上到处都是牛羊。 。 3、难道还有一场球赛比今天的这场球更精彩、激烈吗？ 九、1、松树的风格2、赞颂高尚品格 3、解释说明 4、具有生命力强和自我牺牲“要求于人的甚少，给予人的甚多”的高尚对松树的敬仰 5、古诗词三首 我会写：牧遮醉锄蓑 我会填：1、草铺横野六七里逗弄 2、不是遮头是使风怪不得 3、白发谁家翁媪互相逗趣，取乐 4、卧剥莲蓬顽皮、淘气 我知道：1、唐吕岩鲜活的牧童晚归休憩对安然自乐的生活的一种向往 2、宋杨万里聪明顽皮的儿童 3、宋辛弃疾一家五口各具形态的农家生活之乐的赞美 我知道：增多幼小孤独干脆温暖平静 我会品：1、自己的牙齿也动起来骆驼咀嚼的样子吸引了我 2、从不着急，慢慢地走，总会到的；慢慢地嚼，总会吃饱的有持之以恒的精神 我会改：1、心灵充满了想法。2、把“和舞蹈”去掉。 我会用：3、（1）安静（2）寂静（3）平静 7、祖父的园子 我会找老虎杏树玉米追蜻蜓 我会改蜻蜓飞得那么快，追不上。3、蜜蜂小毛球 我理解
初二物理试题 透镜成像同步练习题
透镜成像 一、知识概述 通过前面一段时间的学习，我们对光现象的相关知识已有所了解，知道光在同种均匀介质中沿直线传播，在两种介质的表面会发生反射现象和折射现象。本周我们将学习一透镜和透镜的成像规律。 二、重难点知识归纳及讲解 （一）透镜 1、几个概念 凸透镜——中间厚边缘薄的透镜叫凸透镜 凹透镜——中间薄边缘厚的透镜叫凹透镜 主轴——最简单的透镜两个表面都是球面的一部分，通过两个球心的直线叫做透镜的主轴。 薄透镜——如果透镜的厚度比球面的半径小许多，这种透镜叫做薄透镜。 光心——薄透镜的中心叫透镜的光心。 2、凸透镜的光学性质 （1）凸透镜对光线有会聚作用。 跟主光轴平行的光线，经过凸透镜后会聚于主光轴上的一点F，F叫做凸透镜的焦点，焦点到凸透镜光心O点的距离叫做焦距。 注意：会聚作用不一定要使折射光线相交，凸透镜对光的会聚作用指的是：光通过透镜后，其折射光线向主轴偏折，即在原光线的传播方向上合拢一些。 （2）凸透镜的三条特殊光线如下图所示：
(1) （2）（3） 3、凹透镜的光学性质 （1）凹透镜对光线有发散作用。 跟凹透镜主光轴平行的光线，经过凹透镜后形成发散光线。如果迎着发散的光线望去，会觉得这些光线好像是从凹透镜后某一点F发出来的，F点叫做凹透镜的虚焦点。 凹透镜对光线的发散作用指的是：光线通过凹透镜后，其折射光线远离主光轴偏折，即在原光线的传播方向上发散开一些。 （2）凹透镜的三条特殊光线如下图所示： （1） （2）（3） 例1、如图所示，AB为一条经过透镜折射后的光线，MN为透镜的主光轴，L为透镜。由图可知（）
A．该透镜可能是凸透镜 B．该透镜可能是凹透镜 C．若该透镜是凸透镜，B点一定是透镜的焦点 D．若该透镜是凹透镜，B点一定是透镜的焦点 解析： 图中仅仅只给出了折射光线，而没有入射光线，此时无法确定光线相对于原来是会聚还是发散，故A、B都是正确；若入射光线平行于主光轴，则B点为凸透镜的焦点，若入射光线没有平行主光轴，则折射光线不会通过焦点，即B不是焦点，对于凹透镜而言，没有实焦点，故C、D都是错误的。 答案：A、B 例2、完成下列光路图 解析： 画通过透镜的折射光线时，应记住三条特殊光线：⑴平行于主光轴的光线折射后通过焦点。（凸透镜是实际光线通过焦点，凹透镜是光线的反向延长线通过焦点）⑵通过焦点的光线（或光线的延长线），折射后平行于主光轴；⑶通过光心的光线，传播方向不改变。 答案：如下图所示
8B Unit6 Sunshine for all知识点归纳与练习
8B U6 Sunshine for all知识点 1. I’m training to be a volunteer for the Olympic Games. 我在训练成为一名奥林匹克运动会的志愿者。 →train此处用作动词，意为“培训，接受训练”，常与介词for连用，意为“为…而训练，为…而接受训练”They are the events. (正为比赛项目训练) train sb. to be/ as 训练成为……He is a doctor. (受训成为医生) train sb./ sth. to do sth. 训练…做某事 We should good .（训练学生养成好的习惯）【拓展】①train还可用作可数名词，意为“火车”。I’ll go there.(乘火车) ②training是不可数名词，意为“训练”。You need . (需要更多的训练) 2. Will you support me, Eddie? 你会支持我吗，艾迪？ →support此处用作及物动词，意为“支持”。 I Jim if he takes part in the singing competition. (支持Jim) 【拓展】①support还可用作不可数名词，意为“支持，拥护”。 He needs . 他需要我们的支持。 ②supporter 可数名词，意为“支持者，拥护者”。 He has . 他有很多拥护者。 3. It’s meaningful to do somethin g for the Olympics. 为奥运做事情是很有意义的。→meaningful 形容词，意为“有意义的”，其反义词为，意为“无意义的”，在句中可作表语或定语。 is . 他所做的很有意义。 He gave me a look. 他意味深长地看了我一眼。 4. Liu Ming did not know what to expect when he volunteered for the Special Olympics World Summer Games in Shanghai, back in October 2007. 当刘明为2007年10月在上海举行的夏季特奥会做志愿者时，他不知道能期待什么。 →expect 及物动词，意为“期待，指望，预料”。后接名词、代词、动词不定式或that从句作宾语。 I my good friend in Paris. （期待在见到好朋友） →volunteer此处用作不及物动词，意为“志愿做”；作可数名词，意为“志愿者”。我想做一名志愿者去帮助山区的孩子。I want to help the children in the mountain areas.
语文同步练习答案
1 沁园春雪积累与运用1．qìn fèn ráo xùn sāo hán shǔ zhāo 2．⑴娇艳美好。⑵原指《诗经》里的《国风》和《楚辞》里的《离骚》，后泛指文学作品。⑶形容雪后天晴，红日和白雪交相辉映的壮丽景色。⑷指称雄一世的人物。⑸这里指能建功立业的英雄人物。3．⑴草枯鹰眼急，雪尽马蹄轻(王维《观猎》) ⑵欲将轻骑逐，大雪满弓刀(卢纶《塞下曲》) 4．词牌填词苏轼辛弃疾李清照柳永 5.⑴对偶夸张⑵拟人理解与鉴赏1．日本帝国主义陕北2．北国雪景英雄人物3．⑴北国风光，千里冰封，万里雪飘。望长城内外，惟余莽莽，大河上下，顿失滔滔。山舞银蛇，原驰蜡象，欲与天公试比高。⑵须晴日，看红装素裹，分外妖娆。4．望惜5．这样写使得群山与高原充满了勃勃生机。以银蛇飞舞比喻连绵之群山，以蜡象奔驰比喻起伏之高原，不只形象跃然纸上，而且赋予群山、高原以昂扬奋进的斗争精神，使人联想到自古以来生息、劳动在这块土地上的富于革命传统的中华民族。6．不能。因为这些历史人物是按时间顺序由古至今排列的。拓展与提高一、1.结构框架相同，字数相同，上阕13句，下阕12句。2.寒秋。橘子洲头。“我”看湘江北去。3.从“万山红遍”到“万类霜天竞自由”。描绘了一幅色彩绚丽，“万类霜天竞自由”的秋景图。4.“击”写出了雄鹰展翅奋发，搏击长空的强劲有力；“翔”写出了鱼儿在清澈的水中，自由轻快，像在空中飞翔一样的特点。5.上阕：设问，引出下文，自问自答。下阕：反问，答案包含在问话中并回应前文。 二、1．红星闪闪放光彩，红星闪闪照万代。新时代的我们会踏着先烈的脚步，不辜负如此多娇的江山。让我们自豪地宣告：数风流人物，还看今朝！2．我的选择：丙理由：《沁园春雪》这阕词风格豪放，气势恢宏，甲曲的“哀伤”很显然不适合这首词。乙方案的《2002年的第一场雪》不是咏雪的抒情长调，而是一曲爱情的悲歌，也不适宜作这首词的背景音乐。丁方案《红色娘子军》节奏较快，不宜选为朗诵的配乐。只有丙方案的《安妮的仙境》节奏舒缓，柔美中隐含着刚劲，适合作为《沁园春雪》的背景音乐。 2 雨说积累与运用1．pǔ suō dǒu lì gù zhì qiǎng bǎo yīn lǚ xuān rǎng 2．禁锢：束缚，强力限制。襁褓：背婴儿用的宽带子和包婴儿用的被子；泛指背负、包裹婴儿所用的东西。喧嚷：大声叫嚷。探访：访求；探望。安息：安静地休息（多用于悼念死者）。3．禁锢干涸；喑哑明暗；蓑衣衰老；条缕镂空4．⑴润物细无声⑵路上行人欲断魂⑶两三点雨山前⑷春潮带雨晚来急5. 笑，就是阳光，它能消除人们脸上的冬色。——雨果《悲惨世界》6. 郑愁予错误理解与鉴赏1．在这两节诗中，“雨”鼓励孩子们自由欢笑、勇敢生活。诗中洋溢着自由、快乐的情感。所以，这两节诗，应当用喜悦、轻快的语调朗诵。2．“笑”在这里代表一种快乐幸福、乐观向上的生活态度。柳条儿、石狮子、小燕子、旗子是不会“笑”的，作者在这里用了拟人手法，形象生动地道出了作者希望孩子们勇敢、乐观地生活的愿望。3．示例：雨下得很安静，没有一丝声响，玻璃窗上也缀满了水珠，那不是串串珍珠，而是散落的精灵。带着泡沫一般的情怀，静静地滑落。 4. 拟人；让人感到亲切温柔，充满欢快情趣，切合儿童心理，能打动孩子们的心，能形象生动地表达思想。5.略拓展与提高1．人生人生的目标生活的坎坷和艰险能给人以休息的港湾2．这首诗表现的是人应该勇敢地承受人生的坎坷。3．这一句表现出诗人的昂扬斗志、尽管人生坎坷艰险如大海，但心中对人生的航向不迷茫。这是诗人的人生体验，也是诗人给予读者的启示。 3 * 星星变奏曲积累与运用1．颤凝慰疲覆僵朦胧2．D 3.Ｂ（点拨：游动的正确解释为悠闲从容地到处移动。）4．朦胧诗舒婷顾城理解与鉴赏1．该句运用了暗喻的手法，用星星“颤抖”形象地表现人灵魂受到禁锢时的苦痛。生活的压抑，精神的不自由让人的心灵寒冷孤寂，因而颤抖。 2. 在寻求自由和光明的过程中，在周围都是黑暗的时候，只能燃烧自己去寻找光明。寂寞突出了孤独，燃烧代表了牺牲。3．“柔软得像一片湖”，把夜晚的安宁、平静、柔和、温馨和自由自在用形象的 语言表达出来，给人以温柔如梦的美好感觉。4．这两句诗，分别从听觉上和视觉上描写声音的隐约，白丁香的朦胧，将人们带入一种令人陶醉的朦胧迷离的美好意境，表现了“春天”之美，“光明”之美。诗人用“闪闪烁烁”来形容声音，采用了通感的修辞手法，因为声音一会儿入耳，一会儿消失，一会儿清晰，一会模糊的感觉与视觉上“闪闪烁烁”的感觉是相通的。这是以形容视觉的词语来表现听觉，以视觉感来突出对声音的时断时续、隐隐约约的真切感觉。 5. 光明茫茫黑夜中闪现的点点光明在黑暗现实中执著追求光明 6. 示例1：如果我是一张白纸／我会让人们在我身上记事、算题/如果我是一根蜡烛／
8B+Unit6期中复习知识点
8B Unit6 期中复习知识点 1.I think it’s meaningful to train myself for the Olympic Games. 2.I need you to support me. I need your support. The bag is one of the supporters’.
3.Provide places to live for homeless people. Provide sb with sth Offer sb sth = offer sth to sb 4.Some volunteers volunteer to help poor people. 5.The Special Olympic World Games give children and adults
with intellectual disabilities a chance to show their skills to the world. 6.The Special Olympic World Games include many events similar to those in Olympic Games, including swimming and skating. 7.Don’t give them up
8.It’s unnecessary for you to complete the work today. 9.One of my tasks is to train the boy born with intellectual disabilities. 10.To Li Hai, the most important is not to win a gold or a silver, but to take part in the competition.
五年级语文下册人教版同步练习题及答案
五年级语文下册人教版同步练习题及答案 、看拼音，写词语。（10分） ji a y a o x i n i k a ng k a i s ()()()()() p e ng s o n g zh a n y a n g zh u m u qi ()()()()() 二、给带点的字选择正确的读音打 “V 。（ 3分） 摩平（m a m o ） 琢磨（zhu o zu ）6 嫉妒（j J ） 污渍（j z ）勉强（qi a ng qi a ng 瓜果累累（I e i l ） ei 舵轮(tu 6 du)o 淙( c 6 ng z o h 淙垂涎(y a n xi 1、 诚实是美德，（）做什么，（）要讲老实话，办老实事。 2、 四合院的房子与房子之间，（ ）相互连接，（）各自分开，有分有合。 3、 黄道婆看到黎族人（）棉花种得好，（）纱也纺得好。 4、 （）觉如到的地方，（）有人们幸福稳定的生活。 5、 （）想参加书法培训班，（）得主动提出申请。 六、修改病句。（5分） 1、新学期一开始，我就订好了学习计划和决心。 2、 我们讨论并听取了陈校长的报告。 3、 参观博物馆，使我增长了许多知识。 4、老师经常夸耀小明学习很认真。 5、只要认真拼搏的人，才可能取得成功。 七、按要求改写句子。（7分） 1、 谁不知道这是风车呢 ( )( ）忘食 () 手好 ( ) ( 走 () 无() () 恶（ ) 仇 解 ( )( ）不堪 无（ ）可 ( ) 如 ( ）出 ()外 不可 () ( ) ( 四、 比一 比，再组词 司。（ 4分） 瞩 () 镭（） 谓（ ) 框 ( ) 嘱 () 擂（） 猬（ ) 眶 ( ) 蔽 () 挫（） 踊（ ) 概 ( ) 憋 ?() 座（） 涌 () 慨（ ) 五、 用合 适的关联词 司语 填空 。 (5 分） 、把下面的词语补充完整。（6分） 机妙（） ）相（） ）针（） 以为（） i hu i qi a o cu i a)n
牛津英语8Bunit1重点知识归纳(经典)
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信息技术操作题练习-1
信息技术操作题练习-1
信息技术练习题（一） 1、（1）用Excel 制作如下表格 要求：1、在表的第一行前插入一行，键入“某大学研究生毕业分配表”，并居于表的中央。 2、增加表格线，数据右对齐，文字居中。 3、计算各年的“毕业生总数”。 4、将全表按“毕业生总数”的降序排列。 5、以年份为横坐标，绘制一柱形图，图表标题为“研究生毕业分配表”。 2、（2） 要求在左起第一张工作表中完成： 1、第一行填充颜色为灰色－25% 2、增加表格线，上表内所有文字居中（水平和垂直两方向，不能只点工具栏的居中），所有数据（包括第一列）右对齐（水平）。 3、利用公式计算每名学生的“总成绩”。 4、将全表按“总成绩”的降序排列。 5、选定姓名、数学、物理、外语、计算机五列数据，以姓名为横坐标（系列产生在“列”，勾选上“分类X轴”），绘制一柱形图，图表标题为“本学期期末成绩单”。
注：不要更改“姓名”“数学”“物理”“外语”“计算机”“总成绩”这些单元格的文字内容，否则将不能识别考生的答题内容。 3、（3）要求： 1、按上表样式建表，在表的第一行前插入标题，幼圆，加粗，14号字。 2、增加表格线，第一列单元格底纹为天蓝色。 3、统计每种花卉销售的总支数，要求必须使用公式或函数计算。 4、使用花卉名称和统计两列数据建立三维圆饼图。 5、将全表按“统计”值的降序排序。 4、（4）要求： （1）按上表样式建表，表的第一行是标题，隶书，加粗，16号字，合并单元格并居中。 （2）增加表格线，表中文字及数据均居中。 （3）第一列单元格底纹为淡黄色，第一行单元格底纹为淡绿色。 （4）统计每个单位产量的“合计”值，要求必须使用
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思路解析：浮力等于重力，有两种可能，即漂浮或悬浮。匀速下沉的物体，浮力等于重力。上升的物体，在露出水面之前V物不变，浮力不变，故只有C是正确的。 答案：C 10分钟训练(强化类训练，可用于课中) 1.(xx北京四中模拟模拟)浸没在盐水中的鸡蛋(不沉底)，所排开盐水的重力大约为() A.0.5N B.5N C.50N D.500N 思路解析：浸没在盐水中的鸡蛋将悬浮，因此鸡蛋的重力等于排开水的重力，而一个鸡蛋的重力大约为0.5N。 答案：A 2.把重5N、体积为0.6cm3的物体投入水中，若不计水的阻力，当物体静止时，下列说法正确的是() A.物体上浮，F浮=6N B.物体悬浮，F浮=5N C.物体漂浮，F浮=5N D.物体沉在水底，F浮=6N 思路解析：假设体积为0.6cm3的物体能浸没于水中，则F浮=液gV排=1.0g/cm310N/kg0.6cm3=6N，大于物体自身的重力，因此物体最终漂浮于水面上，由漂浮条件可得F浮=G=5N。 答案:C 3.质量相同的木块和铝块都放入水中，木块浮在水面上，铝块沉入水底。它们受的浮力大小是()
初二物理 机械运动同步练习题及答案
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（4）参照物不能选研究对象本身，因为它不是另一个物体，而是同一物体。如果以研究对象为参照物，则研究对象永远是静止的。 4、运动和静止的相对性 宇宙中的一切物体都在运动着，绝对不动的物体是没有的。我们平常说的一个物体是静止的，另一个物体是运动的，都是指这个物体相对于一个被选作标准的物体，即相对于参照物的位置是否发生了变化。若物体相对于参照物的位置不变，即我们说物体是静止的；若物体相对于参照物的位置不断改变，那我们说物体是运动的。可见运动和静止都是相对而言的，选取的参照物不同，得到的结论也可能不同。因此，我们说的运动和静止都是相对的，不事先选择参照物，说物体运动还是静止没有意义，也是不对的。 5、运动的分类 直线运动——经过的路线是直线的运动叫做直线运动。 曲线运动——经过的路线是曲线的运动叫做曲线运动。 例1、甲、乙、丙三人各驾一架直升飞机，从他们自己乘坐的飞机里往外看，甲看见丙的飞机匀速上升，乙看见甲的飞机匀速下降，丙看见楼房和乙的飞机都匀速上升，则这三架飞机相对于地面的运动情况是（） A．甲、乙匀速上升，丙匀速下降 B．甲、丙匀速下降，乙静止 C．甲、乙、丙均匀速下降 D．甲、乙、丙均匀速上升 解析： 研究三架飞机相对于地面的运动情况，应以地面、楼房为参照物，丙看见楼房匀速上升，说明丙匀速下降；丙看见乙匀速上升，则乙有三种可能：静止、匀速上升或以小于丙的速度匀速下降；甲看见丙的飞机匀速上升，而丙相对地面是下降的，说明甲是以比丙更快的速度匀速下降的。 答案：BC