四年级下册总复习试题(答案)

合集下载

最新部编版四年级数学下册期末总复习及答案(三篇)

最新部编版四年级数学下册期末总复习及答案(三篇)

最新部编版四年级数学下册期末总复习及答案(三篇)目录:最新部编版四年级数学下册期末总复习及答案一最新部编版四年级数学下册期末提升练习卷及答案二最新部编版四年级数学下册期末提升练习题及答案三最新部编版四年级数学下册期末总复习及答案一班级:姓名:满分:100分考试时间:90分钟一、填空题。

(20分)1、小红有8颗黄珠子,红珠子是黄珠子的6倍多6颗。

有(_______)颗红珠子。

2、有红、黄、蓝珠共2007个,按顺序先摆红珠4个,再摆黄珠5个,后摆蓝珠6个;接下去再摆红珠4个,黄珠5个…类推,在这2007个珠子中蓝珠共有_____个.3、一个直角三角形的一个锐角是42°,它的另一个锐角是(_______)。

一个等腰三角形的一个底角是50°,它的顶角是(_______)。

4、测量城市面积常用________作单位,测量学校占地面积常用________作单位,测量教室的大小常用________作单位.5、鸡与兔共有120只,鸡比兔多120只脚,则鸡有(______)只,兔有(______)只。

6、要使687÷□3的商是两位数,□里最大能填(____)。

7、914768050读作,用“万”作单位的近似数是万,省略“亿”后面的尾数约是亿.8、二千万、三万和七个千组成的数是________,用“四舍五入”法省略万后面的尾数约是________万。

9、一个三位小数保留两位小数后是3.90,这个三位小数最大是(_______),最小是(_________)。

10、680减去35的差乘7加上13的和,和是多少?列出的综合算式是(______)。

二、选择题(把正确答案前面的序号填在()里)(10分)1、过直线外的一点画已知直线的平行线,这样的平行线可以画()条.A.1条B.两条C.无数条D.三条2、一道除法算式中a÷b=31⋯⋯5,如果被除数和除数同时扩大100倍,那么这个算式中的余数是()。

四年级下册期末英语复习综合试卷测试题(附答案)

四年级下册期末英语复习综合试卷测试题(附答案)

一、单项选择1.—What ______ do you like? ( )—I like PE and English.A.day B.how many C.subjects 2.In ______, it is cold. We make snowmen. ( )A.spring B.summer C.winter 3.—My jeans _______ too long. ( )—Try _______, please.A.are; this B.are; these C.is; these 4.The girl _______ a red dress is my good friend. ( )A.in B.with C.on 5.John _______ a football match _______ Sunday afternoon. ( ) A.have; on B.has; in C.has; on 6.—Can I have ________ pies? ( )—Yes. Here you are.A.a B.some C.any7.I feel _______. Maybe I have _______. ( )A.cold; a cold B.cold; cold C.a cold; cold 8.Can you see some flowers ________ the park? ( )A.on B.at C.in 9.—Who’s the king of all the animals? ( )—________.A.The apple B.The tiger C.Mr Wang 10.—_______ that man? ( )—_______ my English teacher.A.What's; He's B.Who; His C.Who's; He's 11.—_______ glasses are these? ( )—_______ my father's.A.Whose; They're B.Who's; They're C.Whose; It's 12._______ watch TV, David. _______ your homework, please. ( )A.Don't; Do B.Can't; do C./; do 13.—_______ is the kite? ( )—It's _______ the tree.A.Where; in B.Who; in C.What; on 14.It's nine o'clock in the evening. It's time _________ bed. ( )A.to B.in C.for 15.The Science book is ________ the bedroom, ________ the chair. ( ) A.on; in B.in; on C.at; on 二、用单词的适当形式填空16.My ________ (sister) skirt is too short.17.________ (not drink) in the reading room.18.The jeans _______ (be) my _______ (brother), _______ (Mike).19._________ (who) pencils are they?20.He has a _________ (swim) lesson every week.21.What ______ (do) your sisters have?22.Tim _____ (have) lunch at twelve.2avid, can you see _______ (they)?24.How many ________ (book) do we have?25.I don't have _____ (some) lessons this Saturday.26.It's 4 o'clock. It's time ________ (go) home.27.I see five ________ (horse).28.The red hat is ________ (my).29.It's cold outside. Look, it is ________ (snow).30.It’s cool and ______ (rain).三、完成句子31.—Are you ________ (生病的)?—Yes, I have a headache.32.I _______ cold. I _______ a cold.33.Let’s go to the _____ (公园) and draw some flowers.3: Come and look at my new d_____.B: How nice!35.It’s a f_______ day. Yang Ling can h_______ a picnic in the park .36.What can you see _________ the _________ (在河面上)?37.I can see some birds over there. Can you see t_________?38.We are ______________ (在学校).39.—______ (谁的毛衣) is this?—It's Helen's.40.Mr Green _____ (通常) has aa basketball match on Sunday _____. (下午)四、阅读理解4This Sunday, Betty plays with Richard and Helen. They play volleyball and climb trees in the park. “This is boring. Let's have fun,” says Helen. They go to her house. Helen opens a big red umbrella and stands on a chair. Then she jumps off. “Look! I can fly!” she says. “That chair isn't very high,” said Richard. “Watch me!” He takes the umbrella and jumps off a table.Betty wants to fly too. She wants to jump off the balcony (阳台). “No! It's too high!” shouts Richard. “It isn't very high,” says Betty. Betty can see the soft grass on the ground. She is very afraid, but she opens the umbrella and jumps. She falls into (跌入) some flowers.Betty hurts her legs. She goes to see the doctor. The doctor says, “Your legs are OK, Betty. But don't try to fly again!” The next day, the children in her class give her a funny card. Inside it says, “Go by plane next time, Betty!”41、_______ children play with Betty this Sunday. ( )A.Two. B.Three. C.Four. D.Five.42、The word “boring” means _______ in Chinese. ( )A.有趣的B.无聊的C.刺激的D.累人的43、Helen can't _______. ( )A.play volleyball B.climb trees C.fly D.play funny games44、Richard jumps off _______ to fly. ( )A.a tree B.a chair C.a table D.the balcony45、Betty is afraid because (因为) _______. ( )A.she sees the grass B.she falls into some flowersC.the balcony is too high D.she has no umbrella五、阅读理解4My name is John. I’m from the USA.There are four people in my family. My parents, my brother and me. I usually get up at 6:30 and I often play basketball on Saturdays. I like spring best. It’s windy and warm. And I like winter, too. Because my birthday is in December, and I can play with snow. Today my parents are going shopping to prepare (准备) for my birthday tomorrow. My brother is playing in the garden. I’m watching TV.46、John often play basketball ____. ( )A.on Sundays B.in spring C.on Saturdays47、Which is John’s favourite season? ( )A.Spring. B.Winter. C.Summer.48、Why does John like winter? ( )A.Because his birthday is in December. B.Because he can play with snow in winter.C.A and B.49、Who are going shopping today? ( )A.John’s brother.B.John’s parents.C.John.50、What is John’s brother doing? ( )A.He’s watching TV.B.He’s playing.C.He’s going shopping.六、阅读理解4阅读短文,选择正确的答案。

新部编版四年级数学下册期末总复习及答案(三篇).doc

新部编版四年级数学下册期末总复习及答案(三篇).doc

新部编版四年级数学下册期末总复习及答案(三篇 )目录:新部编版四年级数学下册期末总复习及答案一新部编版四年级数学下册期末提升练习卷及答案二新部编版四年级数学下册期末提升练习题及答案三新部编版四年级数学下册期末总复习及答案一班级:姓名:满分:100分考试时间:90分钟题序一二三四五总分得分一、填空题。

(20 分)1、下面平行四边形的周长是________(单位: cm)2、在计数器上,从右边起第一位是________位,第二位是 ________位。

3、把线段的一端无限延长就成了一条_____,把线段的两端无限延长就变成一条_____。

4、680 减去 35 的差乘 7 加上 13 的和,和是多少?列出的综合算式是( ______)。

5、已知 13×54=702,那么 130× 540=( _______) ,260 ×540=(_______)。

6、同时掷两个骰子,和可能是_____.如果小明选 5、6、7、8、9 五个数,而小芳选 2、3、4、10、 11、12 六个数,掷 20 次, _____赢的可能性大.7、钟面 2 点钟时,时针与分针成( ________)角;4 点钟时,时针与分针成(________)角; 6 点钟时,时针与分针成(________)角。

8、4.97 精确到十分位是( _____), 0.945 保留两位小数是( _____)。

9、在同一平面内, ________的两条直线,叫平行线。

10、19□350≈20 万,□里最小填 _____;45□9760000≈45 亿,□里最大填 _____.二、选择题(把正确答案前面的序号填在()里)(10分)1、甲数与乙数的和比甲数多 4.3 ,比乙数多 1.07 ,则甲数比乙数少()。

A.3.23B.5.37C. 2.232、下列说法正确的是()A.零除任何数都得零B.如果x与y互为倒数,那么x与y成反比例C.圆锥的体积是圆柱体积的三分之一D.不相交的两条直线叫平行线3、钢笔一支 9 元,圆珠笔一支 3 元,明明一共买了8 支笔,用了 42 元,圆珠笔买了()支.A.5B.4C. 34、一个长方形折起一个角后如图.∠1=25°,∠ 2=()A.25°B. 40°C.50°D.75°5、用 4、5、6 和 5 个 0 八个数字组成一个八位数,这个数中所有的0 都不读出来而且最小,这个数是()A.45600000B.40000056C.40005600三、判断题:对的在()里画“√”,错的画“×”。

小学英语四年级下册期末复习综合试题测试卷(带答案)

小学英语四年级下册期末复习综合试题测试卷(带答案)

一、单项选择1.—Whose ______ are these? ( )—They’re my cousin’s.A.shorts B.short C.dress2.I usually play football ________ four ________ the afternoon. ( )A.at; in B.at; on C.in; at3.Hi, Bobby. Let’s l isten to some English.句中三个斜体单词划线部分发音与众不同的是:( ) A.Hi B.listen C.English4.—What’s the matter with _______ ? ( )—He is ill.A.he B.his C.him5.—________ do you get up every day? ( )—I get up ________ six o'clock.A.What’s; at B.When; at C.What; on6.—What do you want to drink? ( )—I want some ________.A.hamburgers B.an ice cream C.milk7.I don't _______ any Art lessons in the morning, but she _______ one. ( )A.has; has B.have; have C.have; has8._______ nice the cakes _______! ( )A.What; is B.How; are C.How; is9._______ is the first season of a year. ( )A.Spring B.Sunday C.Summer10.—I usually go to school at ________. ( )—Oh, it’s not late.A.seven ten B.eight fifty C.two o'clock11.—Look at the gloves. They're so big. _________ gloves are they? ( )—They're my uncle's.A.Whose B.What C.Who12.Ouch! I can't run now. My foot _________. ( )A.big B.small C.hurts13.The Science book is ________ the bedroom, ________ the chair. ( )A.on; in B.in; on C.at; on14.—Look, there ______ a pair of shoes under the sofa. ( )—Oh, yes. Whose ______ they?A.is; are B.are; is C.are; are15.I ______ a bag. He ______ a bag, too. ( )A.have; has B.have; have C.has; have二、用单词的适当形式填空16.There are some desks in the library. Can you move ________ (it) to the classroom?17.It’s nine o'clock. It’s time ________ (go) to bed.18.I can’t _____ (hear) you!I’m sorry to hear that!19.I can see some __________ (flower) over there.20.—Whose _______ (dress) are they?—They’re ______. (Nancy)21.I’m _______ (sorry) to hear the bad news (消息).2an I have ________ (any) cakes?23.My cousin _______ (have) many toy cars.24.How many ________ (book) do we have?25.Mike ________ (have) a ________ (swim) lesson on Sunday.26.Look at _____ (we) fruit salad.27.What a lovely day it is! Let's go _____ (boat) in the lake.28.It's 4 o'clock. It's time ________ (go) home.29.Are these ______ (you), Tom?30.—My shorts are too short.—Try _______ (they).三、完成句子31.She often runs _______ cold evenings.32.I ________ ________ (看电视) at nine.33._______ (看) my gloves. They are _______ (如此) big.34.It’s a f_______ day. Yang Ling can h_______ a picnic in the park .35.What can you see _________ the _________ (在河面上)?36.In _____ (春天), we fly kites in the park.37.______________ (什么课) do we have this morning?38.—______ (谁的毛衣) is this?—It's Helen's.39.Mike: Do you ______ the cat?Jim: Yes, I do. How ______!40.It’s ten o'clock in the morning. It’s time for _________.四、阅读理解4One day, Mike and his grandpa are out for a walk. It’s hot, so they stop for a rest ne ar a playground. There are some children playing football in the playground. And Mike wants to playtoo. So he asks his grandpa, “How are your teeth, Grandpa?”His grandpa answers, “They are too bad.”Mike is very happy. He gives some sweets to his grandpa, “Please look after the sweets for me. I will go to play football for a while.”41、Mike and his grandpa are ______ one day. ( )A.out for a walk B.watching TV C.listening to music D.out for shopping42、They stop for a rest near a ______. ( )A.school B.home C.playground D.garden43、Mike asks his grandpa to look after his ______ for him. ( )A.apple B.teeth C.sweets D.football44、Mike wants to play ______. ( )A.basketball B.football C.volleyball D.table tennis45、Mike gives the sweets to his grandpa because his grandpa ______. ( )A.doesn’t like sweets B.doesn’t want sweetsC.can’t eat the sweets with his bad teeth D.loves him五、阅读理解4Dear friend,Do you want a friend? Try me! I'm Baymax. As you know. I'm a robot. I'm big and white. I am a robot in the Nerd School. It's so much fun. And I have many interesting classes. My favourite class is science, because I can make experiments (做实验). I have breakfast, lunch and dinner at school.I like green beans best because they are healthy.My best friend is Hiro. He helps me do lots of things, so I am helpful now. I can do kung fu and clean my house. I can swim, too. How about your school life? Tell me please!Yours,Baymax47、Baymax is a ______ robot. ( )A.helpful B.kind C.strict48、They have ______ science classes in a week. ( )A.four B.five C.six49、Baymax's favourite food is ______. ( )A.B.C.50、What can't Baymax do? ( )A.Swim. B.Play football. C.Do kung fu.六、阅读理解4Wendy is a girl. Her school is small and nice. There are ninety-nine students in the school. On the firs t floor, there is a table tennis room and a library. There aren’t any computer rooms on the first floor. In Wendy’s classroom, there are sixteen students. Miss Hu is their teacher. In the classroom, there are some desks and chairs. There is a bookcase. Nea r the bookcase, there’s a computer on the teacher’s desk. All the students have a computer on their desks. Wendy and her classmates (同学) like drawing pictures. Look, there are some pictures on the wall. They’re very nice.51、Wendy’s school is _______. ( )A.big and nice B.small and nice C.not nice52、Miss Hu is Wendy’s _______. ( )A.Mother B.teacher C.sister53、Is there a table tennis room on the first floor? ( )A.Yes, there is. B.No, there isn’t.C.Sorry, I don’t know.54、What’s on the wall? ( )A.There is a bookcase. B.There are some desks and chairs. C.There are some pictures.55、How many computers in Wendy’s classroom. ( )A.There’s one.B.There are 16. C.There are 17.七、阅读理解4A: Merry Christmas, Mary! This Christmas card is for you and this doll is for your sister.B: Thank you, Rose. Come in, please.A: Where’s your sister?B: She and her classmates have a party at school.A: Ah! Your house is so nice and big. Can you show me around?B: Of course. This way, please.A: I hope I can have a house like this.B: I think you will have a beautiful house soon.A: I hope so. Now let’s make a wish.B: OK. My wish is Rose will have a nice house soon.A: Thank you very much. You’re so kind, my dear friend.B: That’s all right. Let’s sing “We wish you a Merry Christmas”.56、Rose and Mary are _______. ( )A.twin sisters B.good friends C.classmates57、Rose gives Mary a _______. ( )A.birthday card B.pen C.Christmas card58、Mary has a _______ house. ( )A.beautiful and big B.big and new C.nice and new59、Mary’s sister is _______. ( )A.at home B.at school C.in a shop60、Mary and Rose _______ ( )A.play B.dance C.make a wish and sing【参考答案】一、单项选择解析:A【详解】句意:—这些是谁的_____?—它们是我堂弟的。

小学英语四年级下册期末复习试题测试卷(带答案)

小学英语四年级下册期末复习试题测试卷(带答案)

一、单项选择1.I have a football ______ today. ( )A.basketball B.match C.table tennis 2.—My jeans are too long. ( )—________, please.A.Try this B.Try these C.Try it3.I usually get up _______ seven _______ Sunday morning. ( )A.at; in B.at; on C.in; in4.The girl _______ a red dress is my good friend. ( )A.in B.with C.onrawing is _______, but I can try. ( )A.right B.easy C.difficult 6.This shirt ________ too long and these socks ________ too big. ( )A.is; are B.are; is C.is; is7.Can you see some flowers ________ the park? ( )A.on B.at C.in8.—_______ you like a banana pie? ( )—No, thanks.A.Do B.Can C.Would 9.—_______ I speak to Jim? ( )—Yes, this is Jim _______.A.Do; speaking B.Am; speaking C.May; speaking 10.—_______ pineapples would you like? ( )—Three, please.A.How much B.How many C.What 11.—_________ lessons do you have in a week? ( )—We have thirty.A.What B.How many C.How much 12.—_________ shoes are they? ( )—_________ Helen's.A.Who's; It's B.Whose; It's C.Whose; They're 13.—Look, there ______ a pair of shoes under the sofa. ( )—Oh, yes. Whose ______ they?A.is; are B.are; is C.are; are 14.—______ do you get up in the morning? ( )—I get up at seven.A.What B.When C.Whose 15.It’s time ______ breakf ast. ( )A.to B.for C.in二、用单词的适当形式填空16.There are some desks in the library. Can you move ________ (it) to the classroom? 17.This _______ (be) a tree and these _______ (be) flowers.18.That is _________ (we) new timetable.19._________ (who) pencils are they?20.I'm hot. I want _________ (eat) an ice cream.21.It’s time to have a ______ (draw) lesson.22.Here are some nice pictures. Oh, I can draw _______ (they).23.My shorts _______ (be) too long.24.It’s seven _____ (clock). Let _____ (we) go to school.25.This is Su Hai _____ (speak). May I _____ (speak) to Nancy?26.I can see some __________ (flower) over there.27.—What’s the matter with _______ (she)?—She _______ (be) ill.28.Mike ________ (have) a ________ (swim) lesson on Sunday.29.The red hat is ________ (my).30.We are hungry after the football game. We want _____ (have) dinner now.三、完成句子31.Look at my gloves. This pair of gloves ________ (be) too big.32.Mike is ________ (口渴的), he wants to drink some water.33.I _______ cold. I _______ a cold.3: M_____ I come in?B: Yes, come in please.35.I ________ ________ (看电视) at nine.36.I’m t____. I want some water.37.—I’m t_________.—Have some water, please.38.I have Science on F______ afternoon.39.Miss Li: ______ do you go to ______?Helen: ______ nine.Miss Li: It’s good to sleep early.40.How many students like _____ and _____?四、阅读理解4Jim’s FamilyIt’s nine o'clock in the evening. The family are all at home. Jim’s father is sitting in a chair. He’s watching TV. Jim’s mother is standing near the window. She’s giving some food to a bird. Polly says,“Thanks! Thanks!” Where’s Jim? Oh, he’s behind the door. Kate,Jim’s sister, is looking for him. They are playing games. They have no homework on Sunday evening.41、There are _____ members(成员) in the family.()A.three B.four C.five D.six42、Who is watching TV in a chair? ()A.Jim B.Jim’s mother C.Jim’s father D.Jim’s sister43、Jim and Kate are _____ . ()A.good friends B.two girls C.two boys D.brother and sister44、The children _____ doing their homework. ()A.aren’t B.isn’t C.don’t D.not45、What’s Kate doing? ()A.She’s doing her homework.B.She’s standing near the window.C.She’s looking for a pen.D.She’s playing games.五、阅读理解4阅读短文,选择正确的答案。

北师大版四年级数学下册期末总复习及答案(三篇).doc

北师大版四年级数学下册期末总复习及答案(三篇).doc

北师大版四年级数学下册期末总复习及答案(三篇 )目录:北师大版四年级数学下册期末总复习及答案一北师大版四年级数学下册期末提升练习卷及答案二北师大版四年级数学下册期末提升练习题及答案三北师大版四年级数学下册期末总复习及答案一班级:姓名:满分:100分考试时间:90分钟题序一二三四五总分得分一、填空题。

(20 分)1、在直角三角形中,如果一个锐角是另一个锐角的 2 倍,那么,这两个锐角分别是 ________度和 ________度.2、小青在计算小数减法时,错把减数 20.2 看成了 2.02 ,结果得到的差是 32.6 ,正确的差是( ________)。

3、被减数、减数与差的和是170,减数比差少 25,差是( _____)。

4、9 个十和 8 个一合起来是( ____)。

5、把 0.36 扩大到 100 倍再把小数点向左移动一位后是(_______)。

6、一辆汽车在高速公路上匀速行驶, 2 小时行驶了 120 千米,汽车的速度是 _____.7、一串彩灯按照“红、黄、蓝、绿”的规律排列着,第8 个彩灯是( ______)颜色,第 25 个彩灯是( ______)色。

8、如果一个图形沿着一条________对折,两侧的图形能够完全重合,这个图形就是 ________图形。

折痕所在的这条 ________叫做 ________。

9、680 减去 35 的差乘 7 加上 13 的和,和是多少?列出的综合算式是( ______)。

10、在计数器上,从右边起第一位是________位,第二位是 ________位。

二、选择题(把正确答案前面的序号填在()里)(10分)1、三角形的两条边分别长 3 厘米和 6 厘米,第三条边最大取 () 厘米。

( 取整厘米数 )A.9B.10C.82、如果一个三角形的两个内角度数的和等于第三个内角的度数,那么个三角形是()。

A.角三角形B.角三角形C.直角三角形D.无法判断3、国期,甲商以“打九折”的措施惠,乙商以“每100 元送 10 元物券”的形式促.李阿姨准物 200 元,去哪个商合算一些?()A.甲B.乙C.甲、乙都一4、已知△,○,□表示三个不同的数(0 除外 ) ,△÷○=□。

人教版四年级语文下册期末总复习及答案

人教版四年级语文下册期末总复习及答案

人教版四年级语文下册期末总复习及答案班级:姓名:分数:考试时间:90分钟题序一二三四五六七总分得分一、读拼音,写词语。

(15分)tínɡ dùn dǔ zhùyóu rúshān bēnɡ dì lièshuǐ dào yuè jìn shú xīzhèn dònɡshènɡ yú二、比一比,再组词。

(10分)弧(_____)尊(_____)暂(______)瑕(_____)堪(_____)孤(_____)遵(_____)崭(______)假(_____)湛(_____)三、把成语补充完整,并按要求填空。

(15分)(____)缘(____)故(____)(____)达理哄(____)大(____)不动(____)(____)顾名(____)(____)(____)天(____)地(____)(____)怨言得心(____)(____)小明(_______)拍了一下桌子,坐在旁边的小妹妹吓坏了。

2.这道题很简单,小华做起来真是(______)。

四、选择恰当的关联词语填空。

(10分)不但……而且……虽然……但是……既……又……如果……就……即使……也……1. 我(_____)只考了六十一分,(_____)我已尽了力。

2.(_____)你尽了力,(_____)的确没关系。

3.学写字(____)要观其形,(_____)要悟其神,心神领会,才能写好。

4.(______)雨再大,路再滑,我们(______)要按时报到。

5.我发现妈妈只为了洗我的两件内衣就开动洗衣机,(_____)费水,(____)费电。

五、照样子,按要求写句子。

(15分)1.小草破土而出。

(改为拟人句)_____________________________________2.母亲对护士说:“这是我的女儿,正在医科大学读书。

人教四年级下册数学期末综合复习试卷(附答案)

人教四年级下册数学期末综合复习试卷(附答案)

人教四年级下册数学期末综合复习试卷(附答案)1.“小马虎”把20⨯(☆50+)算成了20⨯☆50+,与正确答案相差( )。

A .0 B .30 C .950 D .10002.下面( )种图形不一定是轴对称图形。

正方形 三角形 长方形 圆形 平行四边形A .1B .2C .3D .4 3.下面各段线段,可以组成三角形的是( )。

A .1cm 、1cm 、3cmB .3cm 、3cm 、3cmC .2cm 、3cm 、5cmD .2cm 、2cm 、6cm 4.用4块同样大小的正方体搭成下图的样子,从上面看应是( )。

A .B .C .5.下列各数中去掉“0”而大小不变的是( )。

A .7.065B .5.760C .7650 6.0.06和0.060的计数单位分别是( )。

A .0.01 0.01B .0.01 0.001C .0.1 0.01D .0.001 0.001 7.一根绳子长30米,第一次剪去3.8米,第二次剪去4.15米,这根绳子和原来相比,短了( )米。

A .22.05B .7.95C .3.88.四(1)班有44名同学去划船,一共租了9条船。

每条船都坐满了,每条大船坐6人,每条小船坐4人。

小船租了( )条。

A .4B .5C .6 9.三角形的三个内角分别是92°、75°、13°,这个三角形是( )三角形。

A .锐角B .直角C .钝角 10.8吨50千克=( )吨 57平方分米=( )平方米6.02千米=( )米 10.02千克=( )千克( )克11.0.5里面有( )个0.1;( )里面有26个0.01。

12.一个除法算式的商是12,如果被除数除以3,除数不变,商是( )。

13.用100kg 大豆可以榨出13kg 豆油,1t 大豆可以榨出( )吨豆油。

14.学校买树苗绿化校园,每棵树苗20元,买4棵送1棵,学校一次买回20棵,用去_____元钱。

  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。

教科版小学科学四年级下册总复习试题(答案)一、填空题:1、由电池、电线、灯泡等组成的电流动环路叫电路。

2、像铜丝那样可以通过电流的物质,称为导体,像塑料那样不能通过电流的物质称为绝缘体。

3、你知道能导电的物体有:水、大地、铅笔芯等,不能导电的物体有:干木棒、橡胶、塑料等。

4、一节电池的电压是 1.5伏,两节电池串联的电压是 3 伏,两节电池并联的电压是 1.5 伏。

5、当电池的两端被电线直接连接在一起时,就会发生短路。

6、电路连接有串联和并联两种基本连接方法,我们家里的照明电路一般用并联方法连接的。

7、发电厂发出的通过电线送到各家各户的电是220 ∨的交流电。

8、自然界中只存在两种电,一种是直流电,一种是交流电。

手电筒的电是直流电,日光灯用的电是交流电电。

10、家里和学校里的电线,插座的电都是很危险的220V的电。

11、花包括四部分,它们是花瓣、萼片、雄蕊、雌蕊。

四个部分都齐全的叫做完全花,只有雄蕊没有雌蕊的花叫雄花。

只有雌蕊没有雄蕊的花叫雌花。

它们都是单性花花。

既有雄蕊、又有雌蕊的花是两性花花。

13、植物的花蕊中的雄蕊产生花粉传到雌蕊上的柱头上,使雌蕊子房里的胚珠受精,受精的胚珠发育成种子。

14、种子萌发需要足够的水分、空气和适当的温度。

15、蚕豆种子的构造为种皮、胚芽、胚根、子叶。

16、蚕豆的胚芽发育生长后变成茎和叶;胚根发育生长后变成根。

17、根据食物的来源,我们可以把食物分为动物类食物和植物类食物两类。

18、食物中含有充分的营养它们是:维生素、脂肪、糖类、矿物质、蛋白质、水。

19、蛋白质是人体肌肉、皮肤、内脏、头发、指甲和血液的主要成分。

20、食物中含蛋白质丰富的有:牛肉、鱼虾、牛奶、大豆、;含糖类丰富的有:米饭、面;含脂肪丰富的有:肥肉、花生、食用油。

含维生素丰富有:水果、各种蔬菜。

含矿物质丰富有:食盐、矿泉水。

23、如果在食物上滴上碘酒,食物变成蓝色,说明该食物中含有较多的淀粉;如果拿食物在白纸上涂抹,白纸变得油腻、更透明,说明该食物中含有较多的脂肪。

如果用火烧时带有焦味,说明该食物中含有较多的蛋白质。

24、检验食物中含有淀粉丰富的方是:在食物上滴上碘酒,食物变成蓝色,说明该食物中含有较多的淀粉。

检验食物中含有脂肪丰富的方法是:拿食物在白纸上涂抹,白纸变得油腻、更透明,说明该食物中含有较多的脂肪。

26、在岩石中可以看到一些古代生物的遗体或遗迹,这些叫做化石。

27、写出三种你观察岩石的方法摸光滑程度、捏软硬、看颜色。

28、花岗岩主要由石英、长石、云母三种不同的矿物组成。

…………(√)29、通过学习,你认识的岩石有大理岩、花岗岩、砾岩等。

30、同种电荷相互排斥,异种电荷相互吸引。

二、判断题:1、在户外遇到雷雨时,不要躲在树下避雨。

…………………(√)2、不要用湿手、湿布触摸电器和开关。

………………………(√)3、使用电路检测器检测物体的导电性要重复检测一次。

……(×)4、在家里和学校里的电线、插座的电一般都是220V的交流电。

(√)5、对人体来说,低于36∨的电压是安全的。

…………………(√)6、不管是低压电还是高压电,不直接碰到是绝对不会触电的。

(×)7、电线外面包着的塑料仅仅是为了防止电线生锈。

…………(×)8、一节电池的电压是1.5V,两节电池串联起来电压还是1.5V。

(×)9、动物产的卵都能发育成新一代生命。

………………………(×)10、蚕豆的子叶在种子萌发过程中的作用是提供养料…………(√)11、植物的花都能结果,产生种子。

………………………………(×)12、蚕豆的种皮对胚有保护作用。

(√)13、雌性动物产的卵,必须和雄性动物产的精子结合,使卵受精,才能发育成新一代的生命。

…………………………………………(√)14、解剖油菜花的准确顺序应该从外到内的。

……………………(√)15、油菜花,桃花,南瓜花都是完全花。

………(×)16、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。

……………………………………(√)17、鱼肉是很有营养的,它含有人体所需的所有营养。

…………(×)18、为了使自己获取膳食营养,我只吃喜欢的食物………………(×)19、为了使自己能均衡获得各种营养,我们要不偏食,不挑食。

……(√)20、用滴碘酒的方法可以知道该食物中是否有蛋白质。

…………(×)21、生的马铃薯与熟的马铃薯的营养是一样的。

…………………(×)22、闻不认识的物体发出的气味的方法是直接用鼻子对着闻。

…(×)23、闻不认识的物体发出的气味的正确方法是,用手轻轻地在瓶口扇动,仅仅使少量的气味飘进鼻孔。

……………………………………(√)24、维生素和矿物质有调节身体机能的作用。

…………………(√)25、把食物煮熟了吃不但增强了我们人类的体质,而且扩大了食物来源。

… (√)26、生的马铃薯与熟的马铃薯的营养是一样的。

………………(×)27、有人说脂肪多吃会发胖易得病,所以我们不能吃含有脂肪的食物。

………(×)28、食品的保质期越长,就说明这种食品越好。

(×)29、铁是从铁矿石中提炼出来的。

………………………………(√)30、石英具有像玻璃那样的光泽。

…………………………………(×)31、所有的岩石都是由一种或几种矿物组成的。

………………(√)32、矿物的透明度分为透明、半透明、不透明。

(√)33、岩石很坚硬,永远不会改变模样的。

………………………(×)三、选择题:1、在下图所示的几种电路中,灯泡不能亮的是………………(B短路)。

2、下列物体中属于绝缘体的是(C)A、湿布B、铁丝C、干木棒D、人体3、下列物体是导体的是(B、) A、橡皮B、湿抹布C、纸片D、木棒4、下列物体中可用来接通电路的是( C )。

A、橡皮B、塑料尺 C 、铅笔芯D、纸板5、下列做法,属于不安全用电的是(C )。

A、保护绝缘体B、不用湿手触摸电器和开关C、用湿布清洁开关D、移动电器时切断电源6、不高于(C )的电压是安全电压。

A、1.5V B、220V C、36V D、110V7、你知道的生活中常见的导体有(C ),生活中常见的绝缘体有(B )。

A、橡皮和铁丝B、塑料尺和干木棒C、湿布和钥匙8、油菜花是( A )花。

()。

A、完全花B、不完全花9、下列植物属于不完全花的是(C)A、油菜花B、桃花C、南瓜花D、凤仙花10、蚕豆长成茎和叶的是。

(B)A、种皮B、胚芽C、胚根D、子叶11、植物的果实是由( A )发育而来的。

A、子房 B萼片 C胚珠12、利用动物来传播种子的植物是(A)A、苍耳B、蒲公英C、油菜籽D、栗子13、随风飘动进行传播的种子是( B )。

A、栗子B、蒲公英 C 、苍耳14、根据下列植物果实或种子具有的特点推测,利用动物来传播种子的( C )。

A、果实在成熟时会突然炸裂B、轻,带翅或绒毛C、有小刺或多肉好吃D、圆形,散落时能滚动15、利用水流来传播种子的植物是(C )A、苍耳B、蒲公英C、莲蓬D、栗子16、种子的( D )发育生长后变成根,( C )发育生长后变成茎和叶。

A、种皮B、子叶C、胚芽D、胚根17、含维生素丰富的食物是( B )。

A、牛肉B、马铃薯 C 、饼干18、许多蔬菜含有丰富的( C )。

A、蛋白质B、糖类C、维生素D、脂肪19、下列食物必须烧熟了吃的是( B )。

A 萝卜 B 猪肉 C 梨 D 黄瓜20、米饭中主要含有( D ),牛奶中含有(A ),肥肉中含有( B )A、蛋白质B、脂肪C、维生素D、淀粉21、在白纸上檫一檫、压一压,白纸上留下了油迹,则该食物中含有丰富的( B )A、蛋白质B、脂肪C、糖类22、人体肌肉、皮肤、内脏、头发、指甲和血液的主要成分是()。

A、蛋白质B、糖类脂肪C、维生素矿物质23、某矿物不能用铜钥匙刻划出痕迹,但能用小刀刻划出痕迹,这种矿物的硬度是( C )。

A 、软B、较软 C 、较硬D、硬24、下列说法正确的是( D )A、岩石和矿物是取之不尽,用之不竭的B、岩石和矿物在自然界中是不变的C、岩石在大气,水,生物等长期联合作用下也不会发生变化D、岩石和矿物在人们开采之后就不可能再生了,因此要保护和合理利用四、连线:1、米饭丰富的糖类提供我们活动的能量猪肉丰富的蛋白质长身体的材料食盐丰富的矿物质调节身体的机能黄瓜丰富的维生素调节身体的机能花生丰富的脂肪提供我们活动的能量2、凤仙花喷射传播蒲公英风力传播苍耳动物传播莲蓬水流传播喷瓜喷射传播3、牛奶蛋白质肥肉脂肪蕃薯糖类豆腐蛋白质葡萄维生素4、产卵繁殖的动物:鸡鲫鱼产小动物的动物:猫老鼠大象五、看图填空:1、写出小灯泡装置各部分的名称。

玻璃泡、灯丝、金属架、连接点2、写出以下的两种不同的电路连接方法。

(并联)(串联)3、写出油菜花各部分的名称。

花瓣、萼片、雌蕊、雄蕊六、实验设计:1、设计一个实验证明温度对食物保质的影响。

实验材料:同样新鲜的鱼2条,冰箱实验过程:把2条同样新鲜的鱼一条放进冰箱里冷藏,一条放在较高温度下,放置几天,观察2条鱼的新鲜程度实验结果:放在较高温度下的鱼变质严重,有异味;放在冰箱里的鱼没有发生变质2、霉菌的生长可能与哪些因素有关?请你提出一个假设。

(1)我的假设是:霉菌的生长可能与水分有关。

围绕这一假设设计实验,检验你的假设。

我设计的实验:是否有水这个条件改变,其他所有条件保持不变。

需要实验器材:2块同样的面包,水和滴管,2个密封袋。

实验步骤:在一块面包上滴10滴水,另一块面包不滴水,分别放在2个密封袋子里面,然后放在相同的地方观察。

实验结果:滴水的面包发霉快。

说明霉菌在潮湿的环境下生长快。

(2)我的假设是:霉菌的生长可能与温度有关。

围绕这一假设设计实验,检验你的假设。

我设计的实验:温度条件改变,其他所有条件不变。

需要实验器材:2块相同的面包,水和滴管,2个密封袋,冰箱。

实验步骤:在2块相同的面包上都滴10滴水,分别放进2个密封袋里面。

一块面包放进冰箱,另外一块面包放在温暖(较高温度)的环境下,观察记录霉菌的生长。

实验结果:放在温暖(较高温度)下的面包发霉快。

说明霉菌在较高温度下生长快。

(本题要求达到的目标:会设计上述2个实验,能够清晰描述出来)。

相关文档
最新文档