Chapter 1
Vocabulary
A 1 c 2 b 3 a 4 b 5 c 6 a
B 1 death 2 smile 3 president 4 imagine 5 memory 6 dramatic
Language
Comon errors
1 If you cool water, it turns into ice.
2 If you plant seeds in soil, they grow.
A1 1 e 2 f 3 a 4 c 5 d 6 b
A2 2 Coffee costs less if you buy it in a supermarket.
3 If there is a lot of traffic, the journey takes a long time.
4 Wet or icy roads are dangerous if you drive too fast.
5 If you sleep badly, you often feel tired the next day.
6 If the wind blows in winter, it usually feels cold.
Common errors
1 If I swim every day this summer, I’ll be very healthy.
2 What will you buy if you win the lottery this week?
B1 1 c 2 f 3 a 4 e 5 b 6 d
B2 1 If you don’t clean your room, you won’t go to the party.
2 If you climb up the mountai n,you’ll see a beautiful castle.
3 If you wear a coat, you won’t feel cold.
4 If you take these pills,you’ll be a Memory Champion.
C1 2 Unless you save your money carefully, you won’t be able to buy a CD player.
3 I won’t see the horse race very well unle ss I wear my new glasses.
4 Unless we hurry, we won’t see the beginning og the film.
5 Unless you keep quiet, you’ll have to leave the library.
6 Unless it rains soon, the crops won’t grow very well.
7 They can’t go out unless they finish their homework.
C2 2 You won’t pass your exams if you don’t study hard.
3 We’ll play outside this afternoon if it doesn’t rain.
4 Unless he comes in five minutes, I’m leaving.
5 Leave without me if I don’t phone.
6 You can’t send a letter if you don’t know the address.
7 You can’t go in unless you’re a member.
8 Don’t write to them again unless they reply.
D1 1 If you use the ‘picture’ method, you will remember words better.
2 If you forget what you did yesterday, you have a bad memory.
3 If we have a test tomorrow, this class will do well.
4 If we get fish out of water, they die.
5 If Ada gets up late, she will miss the school bus.
D2 1 Unless…work…will/’ll get
2 will fail…if…don’t do
3 will/’ll fail…unless …study
4 If…finish…feel…gets
5 Unless…spend … will do
6 will sto p … if …don’t pass
7 will/’ll be …if…pass
Listening and Speaking
A1 1 short-term 2 long-term 3 injured 4 longer 5 picture 6 mind 7 strange
8 colourful 9 amazing 10 feelings
B1 Laura: 3 2 1
Ben: 2 3 1
B2 1 F 2 T 3 F 4 T 5 F 6 T 7 T
Tapescript:
A Listen to the summary of the text, fill in the blanks and then recite it.
People have a short-term memory and a long-term memory. When people get old, their short-People have a short-term memory becomes worse, but they can still remember things from a long time ago. S man with an injures brain cannot remember anything for longer than a few minutes. If you want to remember something, you’d better make a picture of it in your mind. If the picture is silly, strange and colourful, you will remember it better. There are some amazing stories about memory in the Guinness Book of Records. Memory is connected to our feelings. If something dramatic happens, we usually remember it well.
B1 Listen to Laura and Ben talking about their earliest memories. They each mention three memories. Look at the pictures and say whether they are the first, second or third memories. Write 1,2,3 in the boxes.
LAURA Do you have memories of your early days, Ben?
BEN Yeah. I’ve made notes of my first three memories. And … here they are: my first memory is playing football at the park. I was very young, maybe about five. My brother took me there.
LAURA My earliest memory is giving my dad his birhhday present. Well, Mum gave me the money and let me buy it in the shop. I can’t remember what it w as, but I do remember how happy Dad was when he saw it.
BEN My second memory is when we got ‘Bruce Lee’, our cat. Mum and Dad didn’t tell me. I just saw Dad with this cat. And I said something like, ‘Wow, he’s great.’ And Mum said, ‘Do you like him?He’s yours.’
LAURA I ’ve also got something special. That was in school. I can still remember my teacher’s smiling face when she presented me a badge. But I can’t remember what I did to get it.
BEN Maybe to keep you from crying all day at school?
LAURA Talking about crying, my first bad memory is going into hospital when I was seven. I broke my leg. Mum stayed with me for three nights and then everybody said to Mum, ‘Go home, and get some rest.’ And I said, ‘Go home, and get some rest.’
And in the end she did. But I missed her. I cried my eyes out. Actually.
BEN My first bad memory is the first time somebody hit me. You know, this bully was a lot bigger than me.
LAURA So what happened? Did you …run away from him?
BEN No. I probably would now! He hit me, so I hit him back.
LAURA Oh Ben! You beat the bully. How brave!
BEN No, actually the bully beat me. But I did hit him a couple of times. I didn’t run and I didn’t give up. Do you know, Laura, I just said that was a bad memory, didn’t I?
LAURA Good for you, Ben.
B2 Listen to the conversation again and say whether the statements below are true or false. Circle T of F.
C1 1 e 2 d 3 f 4 b 5 a 6 c
Reading
A 1 b 2 a 3 a 4 b 5 a
B 1 1,400 2 72 3 30 4 small 5 1,700 6 use a computer 7 call his name 8 the phone 9 good memories 10 very clever 11 move
Writing
A 1 Her school bag.
2 She went by bike and it took her half an hour to get to school.
3 She went to the supermarket and forgot where she left her bike.
4 He advises her to write notes to remind herself of important things and leave the notes in her pocket.
5 Yes, she thinks it is a great idea.
B (Possible answer)
Lily Always Forgets Things
Last week, Lily went to the supermarket to buy some fruit for her mother. She went there by bike, but she forgot where she left the bike afterwards. So she had to walk home.
Then this morning, she woke up late. When she left home and saw the school bus, she realized that she had forgotten to bring her school bag. She had to run back home. Aftershe returned, the bus had already gone and she had to go by bike. It took her half an hour, so she was late for school.
Unit1 Text A Reading Comprehension 1. B 2. D 3. B 4. C 5. B Language Focus V ocabulary Ⅰ 1.realize 2.challenges 3.flow 4.involve 5.arrival https://www.doczj.com/doc/4a17154951.html,munication 7.fortunate 8.desire 9.ensure 10.culture Ⅱ 1.in order to 2.make sense 3.at least 4.fall in love 5.is essential for 6.as well as 7.started with 8.in addition Ⅲ. 1.at 2.at 3.with 4.in 5.of 6.up 7.from 8.in 9.at
10.with Structure 1.This log is twice as heavy as that one. 2.Their house is about three times as big as ours. 3.The red box is four times as light as the yellow one. 4.Father is three times as old as his daughter. 5.Mary weights twice as much as Ann. Translation 1.学习者热爱目标语文化，他的语言学习将会更成功。 2.直到现在，我还是很难理解为什么所有的一切注定发生。 3.一旦感情受到伤害便很难恢复，无论你做出多么大的努力。 4.只要你还没有失去奶牛，你泼了多少牛奶都是无所谓的。 5.学习者说的越多，提高的越快。 Grammar Focus Exercises 1. B 2. A 3. A 4. D 5. C 6. C 7. C 8. D 9. D 10.D Word Power Practice Ⅰ 1. C 2. A 3. B 4. A 5.B Ⅱ 1. A 2. C 3. B 4. A 5. B
全新版大学英语综合教程3 课后答案UNIT 1 Vocabulary I. 1. 1) on balance 5) illustrated 9) involved 2) resist 6) budget 10) economic 3) haul 7) lowering 11) blasting 4) wicked 8) boundary 12) just about 2. 1)cut back/ down 2) pick up 3) get by 4) get through 5)face up to 6) turn in 7) making up for 8) think up 3. 1) pursued his mathematical studies and taught himself astronomy 2) often generate misleading thoughts 3) attach great importance to combining theory with practice in our work 4) be suspected of doing everything for money 5) before he gets through life 4. 1) their indoor, a profit, to invest in 2) device, the improvement, on a global scale 3) stacked, temptation, never dined out
II Confusable Words 1. 1) house 2) Home 3) home, family 4) household 2. 1) doubt 2) suspect 3) doubted 4) suspected 5) suspect III. Word Formation 1) rise 2) final 3) regular 4) cash 5) hows, whys 6) upped 7) yellowed 8) bottled 9) lower 10) search Comprehensive Exercises I. Cloze 1. Text-related 1) get by 2) temptation 3) get through 4) improvements 5) aside from 6) suspect 7) supplement 8) profit 9) stacking 2. (Theme-related) 1) replaced 2) consider 3) quit 4) world 5) tough 6) fuels 7) provide 8) luxuries 9) balance 10) ideal II. Translation 1. We have a problem with the computer system, but I think it’s fairly minor. 2. My father died when I was too young to live on my own. The people of my hometown took over (responsibility for) my upbringing at that point. 3. The toys have to meet strict/ tough safety requirements before they can be sold to children. 4. Radio and television have supplemented rather than replaced the newspaper as
教科版小学科学六年级下册第二单元综合能力检测 B卷姓名:________ 班级:________ 成绩:________ 小朋友，带上你一段时间的学习成果，一起来做个自我检测吧，相信你一定是最棒的！ 一、填空题。 (共7题；共19分) 1. （2分）小苏打和白醋混合后，产生了一种新的物质________，这种气体能使燃着的火焰________。 2. （3分）物质的变化可以分为________和________，它们最根本的区别是________。 3. （3分）由于煤、石油等化学燃料消耗量的急剧增加，产生了大量的________，导致全球气候________、土壤________、大陆和两极冰川融化，给全球环境造成了巨大的压力。 4. （4分）物质发生化学变化的时候，伴随的现象有________ 、________、________、________这几种。 5. （2分）米饭的主要成分是________，遇到________会变蓝色。 6. （2分）我们周围的世界是由________构成的，它的特点是不断地发生________。 7. （3分）品尝米饭，记录米饭发生的变化。 米饭经过一段时间的咀嚼，会出现________的味道，这是因为米饭中含有的一种叫________的东西发生了变化。这种米饭味道的变化应该属于________变化。 二、判断题。 (共10题；共20分) 8. （2分）物质的变化有时很快，有时却是缓慢的。 9. （2分）空气、水、火、电、声音等也是物质。 10. （2分）咀嚼米饭5分钟感觉微甜，说明米饭本身的味道是甜的。
11. （2分）食物在人身体内的消化过程属于化学变化。 12. （2分）观察到“没有明显变化”跟观察到“明显变化”的现象同等重要。 13. （2分）只要物质的颜色发生变化，就一定发生了化学变化。 14. （2分）在铁的表面进行电镀，可以有效地减缓铁生锈的速度。 15. （2分）做泥塑或面塑仅仅是形态发生了变化。 16. （2分）因为我们看不见也摸不到空气，所以空气不是物质。 17. （2分）动物、植物、微生物都是构成自然界的物质。 三、选择题。 (共15题；共30分) 18. （2分）对比实验是运用比较的方法来揭示事物的性质或变化规律的一种实验方法，下列属于对比实验的是（）。 A . 白糖加热 B . 小苏打与白醋混合实验 C . 铁钉生锈的快慢实验 19. （2分）燃烧一张纸和撕碎一张纸做比较，分析正确的是（）。 A . 前者没有产生新物质，后者产生了新物质 B . 前者发生了物理变化，后者发生了化学变化 C . 前者发生了化学变化，后者发生了物理变化 20. （2分）请你判断下列（）种变化与其他三种变化有着本质的区别。 A . 鞭炮燃放 B . 衣服晾干 C . 纸张燃烧
物理电学试题 一、选择题 1．下列物理量的单位不是“焦耳”的是( ) A．热量 B．功 C．功率 D．能量 2. 两只灯泡串联在电路中，其中一只亮，另一只不亮，这原因可能是（） A. 不亮的灯泡灯丝断了或接触不良 B. 两灯相比，不亮的灯泡其电阻太小 C. 两灯相比，不亮的灯泡其电阻太大 D. 两灯相比，通过不亮灯泡的电流较小 3. 甲、乙两电炉并联在同一电源上，各有开关控制，甲炉电阻是乙炉的4倍，要两电炉产生同样多的热量则应：（） A. 甲通电时间是乙的4倍 B. 乙通电时间是甲的4倍 C. 甲、乙通电时间一样长 D. 不知道额定电压无法比较 4. 分别标有“6V，2W”和“12V，8W”的两个灯泡，串联后接在电路中，为使其中一个恰能正常发光，加在电路两端的电压应是（） A、6V B、12V C、18V D、24V 5. 有两个灯泡，L 1标有“6V，3W”的字样，L 2 没有标记测得L 2 电阻为 6，把它 们串联在电路中，两灯均正常发光，那么该电路两端电压和L 2 的电功率分别是（） A. 12V，3W B. 12V，1.5W C. 9V，3W D. 9V，1.5W 6.如图所示，置于通电螺线管内能自由转动的小磁针是静止的，则线圈两端的磁极和电源的正负极分别是 ( ) 。 A．线圈右端为N极，电源右端为正极 B．线圈右端为N极，电源右端为负极 C．线圈右端为S极，电源右端为正极 D．线圈右端为S极，电源右端为负极 7. 有一个额定电压为220伏的电炉，想把它接在 110伏的电路上，而不改变电炉的功率，办法是 （） A. 把电炉的电阻丝截去一半 B. 把电炉的电阻丝截成相等的两段，再并联起来 C. 用另一根和它相同的电阻丝串联 D. 用另一根和它相同的电阻丝并联 8. 如图3所示的四个电路中，电压U都相等，并且电阻R 1大于R 2 ，电流表示数 最小的是
上外综合教程第三册第一单元练习答案 Integrated Course Book 3 Unit 1 Vocabulary I. 1. 1) On balance 2) resist 3) haul 4) wicked 5) illustrated 6) budget 7) lowering 8) boundary 9) involved 10) economic 11) blasting 12) just about 2. 1) cut back / down 2) pick up 3) get by 4) get through 5) face up to 6) turn in 7) making up for 8) think up 3. 1) While farming, Benneker pursued his mathematical studies and taught himself astronomy. 2) Misused words often generate misleading thoughts. 3) We attach great importance to combining theory with practice in our work. 4) A person who thinks that money will do everything may well be suspected of doing everything for money. 5) A person surely has to face a good many bitter disappointments before he gets through life. 4. 1) their indoor, a profit, to invest in 2) device, the improvement, on a global scale 3) stacked, temptation, never dined out II. Confusable Words 1. 1) house 2) Home 3) home, family 4) household 2. 1) doubt 2) suspected 3) doubted 4) suspected 5) suspect III. Word Formation 1) rise 2) final 3) regular 4) cash 5) hows, whys 6) upped 7) yellowed 8) bottled 9) lower 10) search Comprehensive Exercises Cloze I. 1. gets by 2. temptation 3. get through 4. improvements 5. aside from 6. suspect 7. supplement 8. profit 9. stacking II. 1. replaced 2. consider 3. quit 4. world 5. tough 6. fuels 7. provide 8. luxuries 9. balance 10. ideal Sentence Translation 1.We have a problem with the computer system, but I think it’s fairly minor.
Unit 1练习答案 Text comprehension IV. Explain in your own words the following sentences. (p7) 1.I planned to keep silent and act in such a way that nobody would notice that I was only a newcomer in college. 2.For three days, I had not been to the cafeteria due to my feeling of humiliation and shame. Instead, I stayed alone in my room and ate junk food of various kinds from a vending machine which was in just the right place to aid me in avoiding others. 3.It didn’t matter whether or not you were widely accepted or admired; you did not have to behave to the liking of everybody else. Vocabulary I.Explain the underlined part in each sentence in your own words. 1.I was feeling just a bit first-gradish:I had just the feeling of a newcomer at college without the strength a mature student might possess. 2.my airs of assurance: my apparent confidence 3. a little nourishment:some food to appease my hunger (as well as my anxiety) 4.running with the crowd was no longer a law of survival: going with the tide was no longer crucial to one’s success 5.massive mistakes: foolish and glaring mistakes II.Fill in the blank in each sentence with a word taken from the box in its appropriate form. 1.distress 2. clutched 3. pose 4. sneaked 5. preoccupation 6.shackles 7. curse 8. deliberation III.Fill in the blanks with the appropriate forms of the given words. 1.assure 2. discretion 3. relaxation 4. humiliate 5. strategy 6.embarrassment 7. maneuverable 8. immaturity IV.Fill in the blanks in each sentence with an appropriate phrasal verb or collocation taken from the text. 1.lived up to 2. headed for 3. seek out 4. has broken out 5.groped for 6. trying…on 7. go out to 8. tipped off V.Give a synonym or an antonym of the word underlined in each sentence in the sense it is used. 1.distinct: vague (indistinct) 2. discreetly: inconspicuously 3.reserve: self-restraint(self-control) 4. dumb: clever (intelligent, sensible) 5.demeanor：manner（behavior） 6. composed: excited 7. slink: sneak 8. na?ve: mature (sophisticated) VI.Explain the underlined phrasal verbs in your own words. 1.caught on: became popular 2. look up to: respect 3. persist in: keep up 4.result in: lead to 5. figure out: understand 6. hit upon: found
教科版小学科学四年级下册第二单元综合能力检测 A卷姓名:________ 班级:________ 成绩:________ 小朋友，带上你一段时间的学习成果，一起来做个自我检测吧，相信你一定是最棒的！ 一、填空题。 (共6题；共14分) 1. （1分）在括号中写出蚕豆种子各部分的名称 ________ 2. （2分）动物的卵里孕育着新的生命，条件合适的时候就会________、________为一个新的动物。 3. （2分）有的植物靠________贮存营养，有的植物靠________贮存营养，当种子萌发时，它们会把养料源源不断地输送给胚。 4. （3分）大部分的植物靠________来繁殖后代，有的植物也可靠________、________来繁殖。 5. （3分）丝瓜花、南瓜花、油菜花这三种常见的花中，有雄蕊没有雌蕊的花是________；有雌蕊没有雄蕊的花是________；既有雄蕊又有雌蕊的花是________。 6. （3分）许多动物是靠卵繁殖的，动物的卵里孕育着________，在________的时候，它就会发育、成长为一个________。 二、判断题。 (共10题；共20分)
7. （2分）槭树果是依靠动物散播种子的。（） 8. （2分）植物种子的散播方式和它自身的构造及生活环境等因素有关。 9. （2分）不同植物的花的形状、颜色、构造等各不相同。 10. （2分）动物产的卵如果不遇到危险，就一定能发育成新一代的生命。 11. （2分）动物也有与植物相似的地方，许多动物分成雄性和雌性。雌性动物产的卵只有在和雄性动物的精子结合之后，才能发育成新的生命。 12. （2分）蚕豆的子叶在种子萌发过程中的作用是提供养料。（） 13. （2分）尽管种子的构造不同，但都有共同点，即都有种皮和胚。胚是有生命的，可以发育成一棵植物。 14. （2分）克隆羊“多莉”是通过胎生繁殖出来的。（） 15. （2分）植物的花承担着生产种子，繁殖新生命的任务。 16. （2分）自花传媒是一种原始的传粉方式。（） 三、选择题。 (共12题；共24分) 17. （2分）根据植物果实或种子具有的特点推测，利用动物来传播种子的是（）。 A . 果实在成熟时会突然炸裂 B . 轻、带翅或绒毛 C . 带有钩、小刺，肉多好吃 18. （2分）花瓣、雄蕊和花柱完成“历史使命”逐渐凋落是在（）结束后。 A . 开花 B . 传粉 C . 受精
Unit 3 Active Reading 1 Reading and understanding 3 Choose the best answer to the questions. 1 (b) 2 (c) 3(c) 4 (c) 5 (a) 6 (c) Dealing with unfamiliar words 4 Match the words in the box with their definitions. 1 to move your body so it is closer to or further from someone or something (lean) 2 a total amount made by adding several numbers or amounts together (sum) 3 the ability to think about and plan for the future, using intelligence and imagination (vision) 4 used for emphasizing that something refers to one specific situation (particularly) 5 a feeling that you do not trust someone or something (suspicion) 6 to press or move your hands or an object over a surface (rub) 5 Answer the questions about the words and expressions in the box. 1 If you are doing an advanced course in something, is it at (a) a high level, or (b) a low level? 2 If you peer at something, is it (a) difficult, or (b) easy to see? 3 If you get a glimpse of something, do you see it (a) clearly and for a long time, or (b) not very clearly and for a short time? 4 Is a radical idea (a) traditional and widely accepted, or (b) new and different? (This word indicates some fundamental changes in ideas or actions.) 5 If you are in agony about something, do you feel (a) in pain and uncomfortable, or (b) happy and comfortable? 6 If you do something in the presence of someone, are they (a) with you, or (b) somewhere else? 7 If someone affirmed something, did they (a) show they respect and approve of it, or (b) not respect or disapprove of it? 8 If you do something on purpose, do you (a) mean to do it, or (b) do it by
第二单元综合能力检测 一、基础达标 1.下列划线字的读音完全相同的一项是（） A. 匀称称重称心 B. 撒腿撒手撒欢 C. 禁止严禁情不自禁 2.读拼音，写词语。 qiān xūjiāoào dài biǎo gēng zhóng jiān shǒu jiàzhí ________ ________ ________ ________ ________ ________ 3.把下列词语补充完整，并完成练习。 相提并________ ________睦相处 源源不________ 没________打采 奔________不息画________添足 ①与画线词语结构相同的有________、________、________。 ②上面词语中源自寓言故事的成语是________，我还能写出几个：________、________、________。 4.下列词语不是反义词的一组是（） A. 朴素——华贵 B. 匀称——精致 C. 懒惰——勤劳 D. 懦弱——坚强 5.下列词语搭配不恰当的一项是（） A. 痛痛快快地喝水 B. 无忧无虑地生活 C. 翻来覆去地遗落 D. 兴奋不已地叫喊 6.按要求完成句子练习。 （1）想象人物的神态或动作，把下列句子补充完整。 ①他________：“乘坐公交车时，你们怎能相互打闹呢？” ②爷爷________：“苦苦寻找了三十年，我终于见到了老战友！” （2）池水清清的，像一面镜子。（仿写句子） ________，像________。 （3）鹿把凶猛的狮子远远地甩在了后面。（改为“被”字句） 7.按照课文内容填空。
（1）宋人________。________。兔走________，________而死。________耒而________，冀复得兔。________，________。 （2）小故事大智慧，《守株待兔》告诉我们________的道理，《陶罐和铁罐》告诉我们________的道理。 （3）《伊索寓言》中有许多有趣的故事，课外，我阅读了《________》、《________》、《________》等故事。 8.阅读下文，回答问题。 鹿摆摆身子，水中的（倒映倒影）也跟着摆动起来。他从来没有注意到自己是这么漂亮！他不着急离开了，对着池水（欣赏观赏）自己的美丽：“啊！我的身段多么匀称，我的角多么精美别致，好像两柬美丽的珊瑚！” 一阵清风吹过，池水泛起了层层波纹。鹿忽然看到了自己的腿，不禁噘起了嘴，皱起了眉头：“唉，这四条腿太细了，怎么配得上这两只美丽的角呢！” （1）选择文段中恰当的词语。 水中的________（倒映倒影）（欣赏观赏）________自己的美丽 （2）文段中画线句子的意思是（） A. 四条细腿配不上美丽的角。 B. 四条细腿配得上美丽的角。 C. 美丽的角配不上四条细腿。 （3）鹿认为自己的________像________一样美丽。 （4）从“噘起了嘴”“皱起了眉头”可以体会到鹿________的心情。 （5）如果你是鹿的好朋友，你会怎样劝说他？ 9.阅读下文，回答问题。 一只小蚂蚁，总以为自己很：了不起，因为人们都称它为“大力士”！ 有一天，小蚂蚁来到森林里，它遇到了鸭子，就________地对鸭子说：“你这个大嘴巴的家伙，给我让路，让我先过去。”鸭子低头看了看，没说什么，让小蚂蚁先过去了。 小蚂蚁继续往前走，碰到一只小兔在采蘑菇，就________地说：“我能驮起比身体重几百倍的东西，你能做什么！”小兔瞅了蚂蚁一眼，没理它就走了。 小蚂蚁更神气了，它在草地上遇到了一只狼，________地说：“你又是什么东西，连鸭子和兔子都被我打败了，你还不给我让路，难道也想试试我的拳头？“狼根本不理它，只是摇了摇头说：“你这小鬼，竟然这样和我说话。” 狼正想走，小蚂蚁突然咬了狼一口。这下可把狼惹火了，狼一脚踩了下去…… （1）给短文拟一个题目。
初三电学综合试题 物理试题 全卷共85分 第I卷(选择题共36分) 一、单项选择题（每小题只有一个选项正确，将正确答案的字母填在机读卡上， 多选、错选或不选均不得分，18个小题,每小题2分，共36分） 16.下列四个电路图中与右边实物图相对应的是 ( ) A. B C D 17.关于家庭电路，下列说法中正确的是 ( ) A．我国家庭电路的电压是220V B．保险丝是以并联方式接人电路的 C．开关与被控制的灯泡并联 D．家用电器是以串联方式接人电路的 18. 有两个灯泡，L 1标有“6V，3W”的字样，L 2 没有标记测得L 2 电阻为 6，把 它们串联在电路中，两灯均正常发光，那么该电路两端电压和L 2 的电功率分别是（） A. 12V，3W B. 12V，1.5W C. 9V，3W D. 9V，1.5W 19. 在居民小区的楼道里，有一种声控加光控的照明电路，声控和光控电路都相当于开关，在光控电路的小盒子上有个进光孔，夜晚没有光照时，光控开关闭合，当有人走动发出声音时，声控开关闭合，电路被接通，灯泡发光。而在白天，光控电路受到光照，光控开关断开，无论楼道内发出多大的声音，楼道灯都不会亮。实际的声控和光控电路比较复杂，在下图中用声和光两个符号代表声控、光控开关，你认为下图中各电路图能够满足上面要求的是( )
20.某同学观察到如下图所示的两种家用电器的铭牌，根据铭牌上提供的信息， 判断在12个小时内正常使用的电冰箱与连续运转的电风扇消耗电能的情况是 ( ) A ．电冰箱比电风扇多 B ．电风扇比电冰箱多 C ．电冰箱与电风扇一样多 D ．电冰箱比电风扇可能多，也可能少 21.在如下图甲所示的电路中，0R 为定值电阻，ab 是粗细均匀、长为L 的一根电阻丝，滑片P 与ab 接触良好并可自由滑动，且0ab R R .当闭合开关S 后，电压表的示数U 随滑片P 离a 点的距离x 变化的规律能用图乙中哪个图像描述(电源两极间电压不变 ) ( ) 22．如右下图中,两只电压表的指针均指在刻度盘正中央，以下正 确的是（ ） A ．通过R 1的电流小于通过R 2的电流 B ．R 1两端的电压与R 2两端的电压相等 C ．R 1电阻值大于R 2电阻值 D ．R 1消耗的功率小于R 2消耗的功率 23 ．如右下图所示，在电磁铁正上方用弹簧挂着一条形磁铁，开关闭合后，当滑片P 从a 端向b 端滑动过程中，会出现的现象是( ) A ．电流表示数变小，弹簧长度变短 B ．电流表示数变小，弹簧长度变长 C ．电流表示数变大，弹簧长度变长 D ．电流表示数变大，弹簧长度变短 A a b P S S N
Unit1 Active reading(1) 4. b c c d c a 5.productive attendance resistance ambitious acceptance script impressive 6.attendance ambitious productive impressive resistance script acceptance 7.mortgage deck surf coastal;defy lengthy 8.b a b b b a b b Active reading(2) 4.triple cemetery rear biography cram budding finite elapse 5.elapsed;cemetery rear;crammed triple budding;biography finite 6.a b a a b b a a 7.a b b a a b b b a Language in use 6.(1)我们都觉得在校时间不多了，以后再也不会有这样的学习机会了，所以都下定决心不再虚度光阴。当然，下一年四五月份的期末考试最为重要。我们谁都不想考全班倒数第一，那也太丢人了，因此同学们之间的竞争压力特别大。以前每天下午5点以后，图书馆就空无一人了，现在却要等到天快亮时才会有空座，小伙子们熬夜熬出了眼
袋，他们脸色苍白，睡眼惺忪，却很自豪，好像这些都是表彰他们勤奋好学的奖章。 （2）明天行吗？明天只是个谎言；根本就没有什么明天，只有一张我们常常无法兑现的期票。明天甚至压根儿就不存在。你早上醒来时又是另一个今天了，同样的规则又可以全部套用。明天只是现在的另一种说法，是一块空地，除非我们开始在那里播种，否则它永远都是空地。你的时间会流逝（时间就在我们说话的当下滴答滴答地走着，每分钟顺时针走60秒，如果你不能很好地利用它，它就会走得更快些），而你没有取得任何成就来证明它的存在，唯独留下遗憾，留下一面后视镜，上面写满了“本可以做”“本应该做”“本来会做”的事情。 7.(1)Students differ about whether they should have their future mapped out when they are still at university .Some think they should have a definite goal and detailed plan, so as to brace themselves for any challenges, whereas some others think they don’t have to think much about the future , because future is full of uncertainties. （2）After a very careful check-up ,the scientist was told he had got a fatal disease .Although he knew that his life was ticking away ,instead of complaining about the fate ,the scientist decided to make the best of the remaining days ,and speed up the research project he and his colleagues initiated ,and have a shot at completing it ahead of schedule.
第二单元综合能力检测 (时间：60分钟满分：100分) 题号一二三四总分 得分 一、知识宫探秘。(每空1分，共21分) 1．下面的图形各是几边形，把结果写在括号里。 ( )边形( )边形( )边形( )边形 ( )边形( )边形( )边形( )边形 2.数一数下面的图形各有几条边，照样子写在图形上，再填表。 四边形五边形六边形合计( )个( )个( )个( )个 二、小包公断案。(对的在括号里打“√”，错的打“×”)(每题1分，共5分) 1．平行四边形是由四条线段围成的图形。( ) 2．平行四边形的四条边一定都不相等。( ) 3．四边形一定是平行四边形。( ) 4．两个完全一样的三角尺可以拼出平行四边形。( ) 5．长方形和正方形都是四边形。( ) 三、选择题。(把正确答案的序号填在括号里)(每题2分，共10分) 1．下面( )与其他的图形不同。 A. B. C. 2.这个图形中有( )个四边形。 A．4 B．5 C．9 3．一张长方形的纸，剪去一个角后，剩下的部分是( )。 A．三角形B．四边形C．五边形D．以上都有可能 4．( )组三角形可以拼成平行四边形。 A．①和② B．②和③ C．④和①
5．下面的( )号图形不是用七巧板拼成的。 A. B. C. 四、小小操作手。(共64分) 1．(8分)下图是东山街街心花园示意图，请你先将四边形建筑涂成红色，五边形建筑涂成蓝色，六边形建筑涂成黄色，再在花坛右边的圆形处设计一个五边形的售报亭。 2．(6分)在下面的方格纸上画一个四边形、一个五边形和一个六边形。 3．(6分)把下面每个图形都分成三角形，最少能分成几个？ ( )个三角形( )个三角形( )个三角形 4．(6分)在下面的图形中画一条线，分成2个三角形。 5．(6分)在下面的图形中画一条线，分成两个四边形。 6．(6分)在下面的四边形中画一条线，使它符合下面的要求。 两个三角形一个三角形和 一个四边形 一个三角形和 一个五边形 7．(12分)沿着虚线折一折，再填空。 折成了( )形折成了( )形折成了( )形 和( )形和( )形和( )形 折成了( )形折成了( )形折成了( )形 和( )形和( )形和( )形 8．(6分)下面的图形是平行四边形吗？怎样改才能成为平行四边形？9．(8分)数一数，下列图形中各有多少个平行四边形？ ( )个 ( )个 ( )个( )个智力冲浪 (10分)用左边的两个三角形可以拼成几种平行四边形，试着画一画。
（物理）初三物理电流和电路测试题（含答案） 一、选择题 1．如图所示，在接线柱A、B间接入导线（其材料为普通铜丝），在接线柱C、D间接入熔丝．接通电源，灯泡正常发光，熔丝不熔断；断开电源，在B、D间连上一根导线，再次接通电源时，灯不亮，熔丝熔断．以下判断错误的是（） A. 导致熔丝熔断的原因是电路中电流过大 B. 熔丝熔断时，熔丝中的电流大于AB间导线中的电流 C. 熔丝熔断，但灯泡依然完好 D. 用铜丝代替熔丝不符合安全用电的原则【答案】 B 【解析】【解答】A、电路中熔丝的作用就是保护电路，将BD间连上导线时，灯泡被短路，电路中电流过大，导致熔丝熔断，A不合题意； B、由于熔丝与AB将导线是串联的，由串联电路电流处处相等可知，熔丝中的电流等于AB 间导线的电流，B符合题意； C、因导线把灯泡短路，故灯泡无电流通过，所以熔丝熔断，但灯泡依然完好，C不合题意； D、由于铜丝的熔点高，故在短路时不能断开电路，所以用铜丝代替熔丝不符合安全用电的原则，D不合题意 . 故答案为：B . 【分析】A、短路时电路中的电流过大，会致使熔丝熔断； B、根据串联电路中的电流规律可知，串联电路中的电流处处相等； C、灯泡短路时，灯丝中无电流通过，电路中电流过大； D、铜丝的熔点高，在电路中电流过大时，不能及时熔断，起不到保护电路的作用 . 2．如图所示，甲、乙、丙三个轻质小球用绝缘细绳悬挂，已知丙带正电，则（） A. 甲、乙均带正电 B. 甲、乙均带负电 C. 乙带正电，甲可能不带电 D. 乙带正电，甲一定带负电 【答案】 C 【解析】【解答】根据图像，乙丙相排斥，丙带正电，则乙带正电，甲乙相吸，甲可能带负电，可能不带电，C符合题意。
Unit 1 1.听到她屡遭失败的消息，我感到很难过 (distress ) It distressed me a great deal to hear the news that he had suffered repeated failure. 2.他虽然失去了老板的欢心，但仍然装出一副高兴的样子(assume) He assured an air for cheerfulness, even though he lost favor with his boss. 3.格列佛( Gulliver )经历了冒险奇遇，见到了各色奇异的人物 assortment ) Gulliver met with extraordinary adventures and saw a strange assortment of people. 4.如果你再犯同样的错误，他会很生你气的 ( furious ) He will be furious with you if you repeat the same mistake. 5.我们都被他坦率的观点、幽默的语言和亲切的态度所深深吸引 draw) We were all greatly drawn by his frank views, humorous words and genial manner. 6.等到欢呼的掌声平息下来，那位诺贝尔奖获得者开始演讲down) After cheers and applause died down, the Nobel Prize Winner began his speech. 7.他天生有一种特别的洞察力和预见力，因此，他很少随大流die run
语文四年级上学期 第二单元能力提升卷 一、基础训练。(34分) 1.看拼音，写词语。(8分) jing yìng shūshìqīng tái wān dòu （）（）（）（） zhèng míng cāng ying jiàshǐyán jiū （）（）（）（） 2.比一比，再组词。(8分) 绳（）蝙（）挡（）蚊（） 蝇（）遍（）铛（）坟（） 枪（）波（）健（）注（） 抢（）玻（）建（）住（） 3.在括号里填上合适的词语。(6分) （）的顶楼（）的夜里（）的世界 （）的太阳光（）地避开（）的夜空 4.写出下列带点词的反义词，填在括号里。(4分) (1)这儿既温暖 ．．，又舒适;白天明亮，夜间黑暗，这本是必然的规律。（） (2)她的身体非常虚弱 ．．。（） (3)为了弄清楚 ．．这个问题，一百多年前，科学家做了一次试验。（）(4)无论怎么飞，从来没见过它跟什么东西相撞，即使一根极细的电线，它 也能灵巧 ．．地避开。（）5.判断下列句子是什么句式，把序号填在括号里。(4分) A.陈述句 B.疑问句 C.感叹句 D.ā反问句 (1)愿上帝准我们这样! （） (2)我是豆荚里五粒豆子中最了不起的一粒。（） (3)难道蝙蝠的眼睛能在漆黑的夜里看清楚所有的东西? （） (4)在漆黑的夜里，飞机怎么飞行呢? （） 6.选词填空。(4分) 敏锐敏捷 (1)兔子（）地一跳，躲开了老鹰的攻击。 (2)蝙蝠能在夜间安全飞行，是因为它的眼睛特别（）吗? 试验实验 (3)科学家经过反复（），终于揭开了蝙蝠能在夜间飞行的秘密。 (4)常识课上，老师为我们做了“火烧纸杯”的（），看得我们目瞪口呆。 二、能力提升。(22分) 1.按要求改写句子。(8分) (1)太阳在外边照着，把豆荚晒得暖洋洋的。(改为“被”字句) (2)难道我们永远就在这儿坐下去吗?(改为陈述句) (3)在这个小小的顶楼里住着一个穷苦的女人。(缩句) (4)它在风里摆动!(改为反问句)