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课后作业题库部分题来自《点拨》《典中点》

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一、选词填空How, What, What a1．________ cool he is!2．____________ wonderful garden it is!3．________ tall buildings they are!4．________ happy the boy is!5．________ sunny weather it is!二、单项选择6．—The news reported that the rainstorm was in the area last night.—Yes.________ bad weather it was! (凉山)A．What a B．How a C．What D．How7．—Did you watch the TV show Running Man last night?—Yes, I did.________ interesting it was! (遂宁)A．How B．What C．What a8．—Excuse me.I wonder ________ there is a bus here to go to Downing Street.—Yes. Bus No.223.(南昌)A．that B．when C．why D．whether9．I wonder________ the idea to Daming. He still looks angry.(潍坊)A．if have you mentioned B．what have you mentionedC．if you have mentioned D．what you have mentioned10．I know ________ I promised to take you to dinner，but I won't finish working until ten o'clock.A．that B．if C．what D．why三、句型转换11．Can they speak French? I want to know.(合并为一句话)I want to know ________ ________ ________ ________ French.12．Are the children playing games? Tell me.(合并为一句话)Tell me ________ the children ________ ________ games.13．Are you doing the dishes? He asked the lady.(合并为一句话)(绥化)He asked the lady ________ ________ was doing the dishes.14．They are happy to see each other.(改为感叹句)________ ________ they are to see each other!15．She is a kind girl.(改为感叹句)________ ________ ________ ________ she is!四、按要求完成句子16．She plans to play soccer with her friends this afternoon.(改为同义句)She ________ ________ ________ to play soccer with her friends this afternoon. 17．The information is so useful.(改为感叹句)________ ________ ____________ it is!18．We have been celebrating the festival for centuries.(改为同义句)We started celebrating the festival ________ ________．19．Mary will go to Zhejiang University in two months．(对画线部分提问)________ ________ will Mary ________ to Zhejiang Univer sity?20．“Do you want to join us in the discussion？”Mr.Smith asked me.(改为复合句)Mr.Smith asked me ________ I wanted to join them in thediscussion.五、根据汉语意思完成句子21．那朵云呈现出一个多么漂亮的心形！What a beautiful heart the cloud was ________ ________ ________ ________！22．昨晚，有人偷走了姨妈的电视。

Someone ________ the TV set ________ my aunt.23．令我们惊讶的是，白宫发言人拒绝回答这位记者的问题。

To our surprise，the spokesman of the White House ________________ answer the reporter's question.24．我点亮了一盏孔明灯，它慢慢地飞向了月亮。

I lit a Kongming l antern and it________ ________ ________________ ________slowly.25．你能帮助我把地图在书桌上摆开吗？Can you help me to ________ ________ the map on the desk?六、语法专练26．He wondered ________ I liked best about Halloween.A．that B．whether C．if D．what27．Do you know ________ there will be a soccer match tomorrow?A．what B．if C．how D．which28．We wonder if our teachers ________ to our graduating party next weekend. If they ________，we'll be very happy.A．will come; will come B．come; will come C．will come; come D．come; come 29．(2015·凉山)—The news reported that the rainstorm was in the area last night.—Yes. ________ bad weather it was!A．What a B．How a C．What D．How30．I have some tickets for the basketball match. I wonder ________．A．where you buy the tickets B．why you like to go thereC．if you'd like to come along D．when you watch the match七、完形填空(词数：约210；建议用时：8分钟)It is important to have positive (积极的) feelings in our daily life. Compared ________(31) some unhappy people, those who are always pleased and relaxed are less likely to suffer from colds, ________(32) a new study. The researchers from New York University said, “Being happy helps the body prevent diseases.”“It seems that positive feelings may reduce the ________(33) of illness，”said the chief researcher Sheldon Cohen.In an earlier study, Cohen found that people who were ________(34) caught colds less often. And they seldom told their doctors that they felt uncomfortable.In this study, Cohen's team interviewed 193 adults every day for two weeks. In this ________(35), the people told researchers about ________(36) happy or sad feelings that day. Two weeks later, all of them were made to catch colds by doctors, and they had to stay alone in a room for six days.The results ________(37)th at each in the study was equal (平等的) to fall ill. But people who were lively and relaxed said they felt happy during the research. Their illnesses were less serious and lasted for a ________(38) time.Cohen believes that ________(39) people have positive feelings, their body may produce a kind of chemical that helps to fight illnesses. So if you ________(40) your health, please look on the bright side and make yourself happy all the time.31．A. on B．with C．in D．of32．A.as for B．because ofC．instead of D．according to33．A. hope B．safety C．freedom D．danger34．A. painful B．proudC．cheerful D．clever35．A. moment B．field C．period D．times36．A. themselves B．theirC．its D．theirs37．A. expected B．remindedC．agreed D．showed38．A. longer B．fewer C．shorter D．more39．A. why B．which C．whether D．when40．A. care about B．look forC．pick up D．get over八、原创阅读(词数：约320；建议用时：8分钟)Nowadays，more and more Chinese especially teenagers are getting much crazier about celebrating Western festivals. How about you? What do you think of it?Zhang Yimei: In my opinion，people are crazy about the Western festivals only because they are new to them. To have fun in old traditional Chinese festivals，we need to be a little more creative and imaginative，and we will find that traditional Chinese festivals are as wonderful as Western ones.Chen Juan: I think many of us celebrate foreign festivals only because they offer opportunities to get together and have fun with friends and family. So I don't mind having morefestivals.Li Xin: I don't think it's fun to celebrate festivals from other countries. But many of us still copy what people in western countries do to __(1)__ their festivals without really knowing their history and meaning. That's stupid.Xia Yuanhua: Some people may think that Western festivals are more exciting than ours，as we're learning English. But it's a problem when many young people forget Chinese traditions.对自己的传统文化知之甚少是非常糟糕的。

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(人教版)九年级化学 4.3课后作业(有答案)

(人教版)九年级化学 4.3课后作业(有答案)

4.3 水的组成一、补充题目：部分题目来源于《典中点》必做题11．用如图所示的装置进行电解水实验时，有以下描述：①向水中加入少量的硫酸钠溶液，能使水电解产生气体的速率变快；②A、B两试管内收集到的气体的体积比约为2∶1；③A试管内产生的气体能燃烧，且燃烧时火焰呈淡蓝色；④B试管内产生的气体能使带火星的木条复燃。

以上描述中正确的是()A．①②③④B．①②C．③D．①②③12．下列关于水的组成的认识，正确的是()A．水由氢、氧两种元素组成B．水由两个氢原子和一个氧原子构成C．水由氢气、氧气组成D．一个水分子中含有18个电子13．下列说法中正确的是()A．检验氢气纯度时，没有听到任何声音，证明氢气是纯净的B．由于氢气难溶于水，实验室只能用排水法收集C．氢气燃烧的产物是水，是未来最理想的燃料D．不纯的氢气点燃一定会发生爆炸14．(中考·乐山)下列说法中正确的是()A．氢气和氧气反应生成水，说明水是由氢、氧两种元素组成的B．电解水生成氢气和氧气，说明水是由氢气和氧气组成的C．自然界中的天然水和氢气燃烧生成的水都是纯净物D．水和过氧化氢的组成元素一样，所以化学性质也一样15．下列物质按混合物、化合物、单质的顺序排列的是()A．高锰酸钾、水、红磷B．河水、二氧化碳、硫C．冰水共存物、氯酸钾、铁粉D．洁净的空气、氮气、稀有气体16．下列物质中：①食盐水；②液态氧；③加热高锰酸钾完全分解后剩余的固体；④冰水共存物；⑤铜丝；⑥氖气；⑦四氧化三铁；⑧氯酸钾。

其中属于混合物的是________，属于化合物的是________，属于单质的是________，属于氧化物的是________(均填序号)。

二、补充题目：部分题目来源于《典中点》选做题17．如图是电解水的简易装置：(1)电源a为________极，实验开始时向水中加入少量的硫酸钠或氢氧化钠的目的是_______________________________。

九年级语文上册 第二单元 第8课《致女儿的信》课后作业 新人教版

九年级语文上册 第二单元 第8课《致女儿的信》课后作业 新人教版

8 致女儿的信方案1：部分习题来自《点拨》积累与运用1．下列加点字注音完全正确的一项是( )A．曙．光(shǔ)澎湃．(bài)无与伦．比(lún)B．分散．(sǎn) 伫．立(zhù) 怒不可遏．(è)C．刹．那(chà) 惩．罚(chéng)冥思遐．想(xiá)D．一抔．(pōu) 繁衍．(yǎn) 忐忑．不安(tè)2．〈乐山〉依次填入下面句子中横线处的词语恰当的一项是( )(1)至发电时止，我东路各军已大部________南岸。

(2)他们小声地谈论着，似乎怕惊扰那________的空气，他们穿过方场，走过桥，赶上他们的连队，投入战斗。

(3)上帝久久地伫立________着。

随后深沉地思索着离去了。

(4)他立刻停止了朗读，惊慌地往四下里看了看，还好，没有人在笑话他，大家的神情都那么________和认真。

A．渡过肃穆凝视专注B．度过肃静凝望专注C．度过肃穆凝望专心D．渡过肃静凝视专心3．下列句子中加点的成语运用正确的一项是( )A．小偷溜进谈迁家里，偷走了《国榷》的原稿，使谈迁二十多年的心血化为乌有．．．．。

B．他怒不可遏．．．．地扬起手往桌上一拍，霍地站了起来。

C．在暑期社会实践活动中，同学们既体验到合作之趣，又享受了天．伦之乐．．．。

D．宇宙便把它那无与伦比．．．．的光华、风采，全部展现在我的眼前了。

4．〈新题，考查角度新〉〈扬州树人学校阶段性考试〉下列句子的语法知识判断正确的一项是( )A．“近几年来，父亲和我都东奔西走地忙碌。

”句中的谓语是“忙碌”。

B．“忧郁悲伤”“万物生存”“心灵的追念”这三个短语的类型分别是并列短语、主谓短语和偏正短语。

C．“千百双眼睛在随着宁泽涛的身影移动。

”句子的主干是“眼睛随着移动”。

D．“如果不善待爱情，便不能提高到人类美这一高度。

”这句话是假设复句。

5．根据你平时的积累，补全下面语段。

人教版九年级数学上典中点课后作业24.2.2相交、相切、相离(B)(含答案)

人教版九年级数学上典中点课后作业24.2.2相交、相切、相离(B)(含答案)

24.2.2 直线和圆的位置关系——相交、相切、相离课后作业：方案（B）一、教材题目：P101T21．Rt△ABC中，∠C=90°，AC=3 cm,BC=4 cm,判断以点C为圆心，下列r为半径的⊙C与AB的位置关系：（1）r=2 cm;（2）r=2.4 cm;（3）r=3 cm.二.补充: 部分题目来源于《点拨》2．如图，⊙O的半径OC＝5 cm，直线l⊥OC，垂足为H，且l交⊙O于A，B 两点，AB＝8 cm，则l沿OC所在直线向下平移()cm时与⊙O相切．A．1B．2C．3D．43.在Rt△ABC中，∠A＝30°，直角边AC＝6 cm，以C为圆心，3 cm为半径作圆，则⊙C与AB的位置关系是________．4.已知⊙O的直径为10 ，点A 为直线l 上一点，若OA＝7，则直线l与⊙O的位置关系是__________．5．已知：在Rt△ABC中，∠C＝90°，BC＝5 cm，AC＝12 cm，以C点为圆心，作半径为R的圆．(1)当R为何值时，⊙C和直线AB相离？(2)当R为何值时，⊙C和直线AB相切？(3)当R为何值时，⊙C和直线AB相交？答案一、 教材1．解：如图所示，作CD ⊥AB 于点D .因为AB ＝AC 2＋BC 2＝32＋42＝5(cm)，12AB ·CD ＝12AC ·BC ，所以CD ＝AC ·BC AB ＝3×45＝2.4(cm)． (1)r ＝2 cm ＜CD ，⊙C 与AB 相离；(2)r ＝2.4 cm ＝CD ，⊙C 与AB 相切；(3)r ＝3 cm ＞CD ，⊙C 与AB 相交．点拨：用圆心到直线的距离与半径的大小关系判断直线与圆的位置关系是个 难点，应仔细推敲，防止出错．二、 点拨2．B 点拨：连接OA ，则在Rt △OAH 中，由勾股定理，得OH ＝52－42＝3(cm)， ∴CH ＝2 cm.3.相切4.相切或相交或相离5．解：过点C 作CD ⊥AB 于点D ，如图所示．∵在Rt △ABC 中，∠ACB ＝90°，BC ＝5 cm ，AC ＝12 cm ，∴AB ＝ AC 2＋BC 2＝122＋52＝13 (cm)．∴CD ＝AC ·BC AB ＝12×513＝6013(cm)． ∴(1)当0 cm ＜R ＜6013cm 时，⊙C 和直线AB 相离； (2)当R ＝6013cm 时，⊙C 和直线AB 相切； (3)当R ＞6013cm 时，⊙C 和直线AB 相交．。

2021年冀教版英语九年级下册Unit9第九单元课后作业A选自《典中点》

2021年冀教版英语九年级下册Unit9第九单元课后作业A选自《典中点》

2021年春季LeSSOn 51 What COUId Be Wrong?一、单项选择1.Sandy SitS between _________ and _________ ・A. he; IB ・ him; me C. I; he D. me; he2.My hometown is becoming more and more beautifulWith trees and flowers On _________ SideS Of the road.A. allB. bothC. neither D ・ either3.一I know OId JOe IiVeS ________ .一We are SUPPOSed to ViSit him from time to time. Then, he WOn ,t feel A. alone; aloneB. lonely; IOnelyC. lonely; aloneD ・ alone; IOneIy 4.一JaCk hasn ,t taken his PianO IeSSOnS for a IOng time・—He is COnSidering _________ his PianO COUrSe and SPending moretime On his StUdy ・A. to dropB. to throwC. dropping D ・ throwing5.That PrObIem is just a PieCe Of Cake for me・ I Can _______ _______ ・C. not figure it OUt D ・ not figure OUt it6. PIaying COmPUter games is Very harmful. I __________ Play themA. not; anymoreB ・ don ,t; no more C. WOn t t; no InOre D. won r t; anymore7. RiCk hasn't Changed ・ He IookS exactly_________ he did at SChOOL A. as IOng asB. SUCh asC. as SOOn as D ・ the Same as8. ChriS and I _________ each Other ever SinCe then.A. didn ,t meetB. don ,t meet C. aren t t Ineeting D ・ haven l t met 9.1 USed to _________ newspapers and WatCh TV after dinner. BUt nowΓm USed to ________ a walk.A. read; takeB. read; takingC. reading; taking D ・ reading; take10. EXCUSe me, Can you help me find OUt __________With my COmPUter?A. What WrOng isB ・ what ,s WrOng C. What WaS WrOng D ・ What WrOng WaS二、用方框内所给词或短语的适当形式填空experience, real, leave∙∙∙alone,move on, ask …for∙∙∙…for∙∙∙确、连贯（每个单词限用一次）（建议用时：5分钟）ability begin your CIifferenCe heavydescription daily PUt SUre muchOne day, OUr EngliSh teacher Mr. Smith Came into the CIaSSrOOmWith a book in his hand. He Started his IeSSOn With a question, n Who Can 21What StreSs （压力）is like?U NO One answered. Then he raised the book andasked, U HOW heavy is the book?M We ________________________ 22to thinkand guess. One StUdent StOOd UP and said, U l think it is 100g.n AnOtherStUdent said, U lt is 20Ogr OUr answers Were ______________ 23 ・ At last, Mr.Smith explained, U lt doesn ,t Inatter On the real weight. It depends On how IOngyou hold it. Ifl hold it for a minute, it is OK. If I hold it for an hour, I Will have a Pain in my right arm. If I hold it for a ____________________________ 24 , youWin have to Can a doctor. It is the exact Same weight, but the IOnger I hold it, the _____________ it becomes ・ ThiS book StandS for stress. If you hold itWithOUt ________ 26 it down, SOOner Or later, you Win not be __________ 27to keep on. NO matter how ___________ 28 StreSS you have, StOP and have arest for a WhiIe if POSSibIe ・ BOyS and girls, you ShOUId Iearn to relax 29 ・I am _____30 you Win IiVe a happy SChOOl life. ,, We Will never forget Mr.Smith and the meaningful （有意义的）lesson.答案—、1. B点拨：bctween∙∙∙and…为介词短语，其后接人称代词宾格形式。