华大初二升初三摸底考试题
中考生物摸底试卷(含答案)
中考生物摸底试卷(含答案)一、选择题1.用你所学的生物学知识来判断,下列说法正确的是A.人体的消化腺都能分泌消化液,消化液中都含有消化酶B.人体的生命活动主要受到神经系统的调节,但也受到激素调节的影响C.细菌和真菌对于自然界中的物质循环和能量循环起着重要作用D.如果父亲和母亲都患有某种遗传病,那么他们的子女—定患有该遗传病2.某种金合欢有大而中空的刺,蚂蚁栖居其中,并以金合欢嫩叶尖端的球状小体为食。
为探究栖居蚂蚁对金合欢生长的影响,用金合欢幼苗进行实验,研究结果如下表。
实验说明栖居蚂蚁对金合欢的生长金合欢幼苗的生长状况没有蚂蚁栖居的金合欢有蚂蚁栖居的金合欢10个月中的存活率(%)4372幼生长高度(厘米)5月25日至6月16日0→6.20→31.06月17日至8月3日 6.2→10.231.0→72.9A.有促进作用B.有抑制作用C.有利也有弊D.无任何影响3.瓣膜关闭不严会导致血液倒流,心脏内血流方向正常的是()A.右心房→右心室→主动脉B.左心室→左心房→肺静脉C.右心室→右心房→上、下静脉D.左心房→左心室→主动脉4.下图中①③表示血管,②表示人体器官,箭头表示血流方向。
下列叙述中,正确的是()A.若②是肺,则①中是动脉血B.若②是肺,则③中血液流向右心室C.若②是脑,则①可以表示主动脉D.若②是脑,则③中氧含量大于①5.下图是植物体的某些器官或结构示意图,下列相关叙述错误的是()A.甲图中①②③④共同组成种子的胚B.乙图中的②将来发育成丙图中的bC.丙图中的a和b是由甲图中的①发育成的D.丁图中的结构B和C可以使根不断长长6.下表中能正确表达其左侧图所示关系的是()甲乙丙丁A眼球壁的中膜角膜虹膜脉络膜B中枢神经系统脑脊髓神经C消化系统消化道消化器官消化腺D血细胞红细胞白细胞血小板A.A B.B C.C D.D7.回顾你所做过的生物学实验,下列说法错误的是()A.“探究草履虫对刺激的反应”体现了生物能通过反射回应刺激B.“探究唾液对淀粉的消化作用”时,37℃是消化酶的适宜温度C.“观察人口腔上皮细胞”时,要把刮取物置于生理盐水中D.“探究酒精对水蚤心率的影响”需进行重复实验,数据取平均值8.豌豆的高茎和矮茎是一对相对性状,用纯种的高茎豌豆和矮茎豌豆杂交,子一代都是高茎豌豆,子一代种子种下去,自花传粉,获得子二代(数量足够多)。
人教版八升九语文摸底测试卷2套(带答案)
人教版八升九语文摸底测试卷(一)时间:120分钟,满分120分班级姓名得分【卷首寄语】亲爱的同学,八年级的语文学习已经结束,一年耕耘,一朝收获。
请拿起你的笔,仔细审题,认真做答,相信你会有出色的表现。
祝你旗开得胜!一、积累与运用(25分)1、根据要求填空:(每小题一分,共10分)①辛苦遭逢起一经,。
②,愁云惨淡万里凝。
③山水之乐,。
④《登飞来峰》中与“会当凌绝顶,一览众山小”有异曲同工之妙的诗句是:“,”。
⑤) 王老师退休后仍在学校心理咨询室义务“坐诊”,可用《己亥杂诗》中的“___________,___________”两句诗来称赞王老师。
⑥领导干部要实践“三个代表”,其中重要一点就是全心全意为人民服务,做到范仲淹在《岳阳楼记》中所说的“,”。
⑦韩愈在《早春呈水部张十八员外》诗中描写早春特色的诗句是:,。
(8)唐代诗人岑参在《白雪歌送武判官归京》诗中描写塞外奇特风光,被誉为“千古名句的是:________________________,_____________________。
⑨请写出2则有关母爱的名人名言,并写出作者或出处。
⑩请围绕某个春天节气,搜集当地的有关谚语。
(2个)。
2.选出加点字注音完全正确的一组(3分)()A.清冽(liè)摇缀(zuì)俶尔(chū)佁然(yí)B.三春晖(huī)谗言(chán)伛偻(yǔ)林霏(fēi)C.啮齿类(niè)滑稽(jí)模糊(mú)馄饨(tùn)D.解剖(pāo)描摹(mó)戳痛(chuō)哂笑(shěn)3、下列各句,没有语病的一项是()(3分)A.校门口对面又开了一家卖饮料和汽水的小店。
B.牧童牵着牛在吃草。
C.李明同学很勤奋,也很智慧,他的数学成绩在班里遥遥领先。
D.一个人知识的多寡,成就的大小,关键在于勤的程度。
4.用一句话概括下面一段话的主要信息。
2024届九年级下学期开学摸底考试卷(湖北省卷)(考试版)
2024届九年级下学期开学摸底考试卷(湖北省卷)语文(考试时间:150分钟试卷满分:120分)注意事项:1.答卷前,考生务必用黑色字迹的钢笔或签字笔将自己的准考证号、姓名、考场号和座位号填写在答题卡上。
用2B铅笔在“考场号”和“座位号”栏相应位置填涂自己的考场号和座位号。
将条形码粘贴在答题卡“条形码粘贴处”。
2.作答选择题时,选出每小题答案后,用 2B 铅笔把答题卡上对应题目选项的答案信息点涂黑;如需改动,用橡皮擦干净后,再选涂其他答案,答案不能答在试卷上。
3.非选择题必须用黑色字迹的钢笔或签字笔作答,答案必须写在答题卡各题目指定区域内相应位置上;如需改动,先划掉原来的答案,然后再写上新的答案;不准使用铅笔和涂改液。
不按以上要求作答的答案无效。
4.考试结束后,将本试卷和答题卡一并交回。
一、阅读下面材料,完成1-6题。
(共20分)阅读下面的材料,完成下面小题。
熟读唐诗三百首,不会作诗也会吟【A】诵读唐诗是一代又一代中国人的个体记忆和集体记忆【B】这些诗句【C】在岁月流转中【D】入目浸心,在血脉里奔涌..。
①这些诗句,是登高望远时“会当凌绝顶,一览众山小”的______,是举杯言欢时“人生得意须尽欢,莫使金樽空对月”的______,是笑看前程时“大鹏一日同风起,扶摇直上九万里”的______,是历经风雨后“两岸猿声啼不住,轻舟已过万重山”的______。
初读不识诗中意,再读已是诗中人。
②有网友评论,当听到李白对着高适念出那句“银鞍照白马,飒沓如流星”时,感觉心灵一下被击中了,“欲语泪先流”。
是的,诗歌从来都不仅仅是语文课堂上的刻板背诵,也不是浮于表面的华丽辞藻,而是个人沉浮、时代变幻,是世事起落、山河大地。
少年的李白和高适,相信心中的那团锦绣,终有脱口而出之日,立志要横刀立马、报效国家。
③今天的我们,又何尝不是一样的热血、一样的豪情?中华文化的精髓不仅跨越时代,折射到每个平凡人的生活日常,还会呈现在盛唐风韵、诗词歌赋。
八年级升九年级-进阶训练与模拟,带答案
主 题 进阶训练与模拟 教学内容1.综合复习,模拟测试.(此环节设计时间在10-15分钟)案例:如图,ABCD 是正方形,点G 是线段BC 上任意一点(不与点B 、C 重合),DE 垂直于直线AG 于E ,BF ∥DE ,交AG 于F . (1)求证:AF —BF =EF ;(2)当点G 在BC 延长线上时(备用图一),作出对应图形,问:线段AF 、BF 、EF 之间有什么关系(只写结论,不要求证明)?(3)当点G 在CB 延长线上时(备用图二),作出对应图形,问:线段AF 、BF 、EF 之间又有什么关系(只写结论,不要求证明)?参考答案:(1)在△ABF 和△DAE 中,∵AB =AD ,∠ABF =∠DAE ,∠BAF =∠ADE , ∴△ABF ≌△DAE , ∴AE =BF ∴AF —BF =AF —AE =EF .(2)BF —AF =EF ; (3)BF +AF =EFEFBDACGBDACGBDACG(此环节设计时间在20-30分钟)例题1:已知:如图,在正方形ABCD 中,AB =4,E 为边BC 延长线上的一点,联结DE ,BF ⊥DE ,垂足为点F ,BF 与边CD 相交于点G ,联结EG ;设CE =x , (1)求∠CEG 的度数;(2)当BG =25时,求△AEG 的面积;(3)如果AM ⊥BF ,AM 与BC 相交于点M ,四边形AMCD 的面积为y ,求y 关于x 的函数解析式,并写出它的定义域.参考答案:(1)在正方形ABCD 中,BC = CD ,∠BCD =∠DCE = 90°.∵ BF ⊥DE ,∴ ∠GFD = 90°.即得 ∠BGC =∠DEC ,∠GAC =∠EDC .在△BCG 和△DCE 中,,,,GBC EDC BC DC BGC EDC ∠=∠⎧⎪=⎨⎪∠=∠⎩∴ △BCG ≌△DCE (A .S .A ).∴ GC = EC . 即得 ∠CEG = 45°.(2)在Rt △BCG 中,BC = 4,25BG =, 利用勾股定理,得 CG = 2.∴ CE = 2,DG = 2,即得 BE = 6.EF BDACGEFB DACGM GFBC ADE∴ AEG ABE ADG DEG ABED S S S S S ∆∆∆∆=---四边形11114646424222222=+⨯-⨯⨯-⨯⨯-⨯⨯()= 2. (3)由 AM ⊥BF ,BF ⊥DE ,易得 AM // DE .于是,由 AD // BC ,可知四边形AMED 是平行四边形. ∴ AD = ME = 4.由 CE = x ,得 MC = 4 -x .∴ 1144421622AMCD y S AD MC CD x x ==+⋅=+-⨯=-+梯形()().即 216y x =-+. 定义域为 04x <≤.例题2:如图,点A (m ,6),和点B (6,2),(点B 在点A 的右侧)在反比例函数的图像上,直线BC ∥x 轴,与y 轴交于点C .(1)求m 的值及直线AC 的解析式;(2)如果点D 在x 轴的正半轴上,点E 在反比例函数的图像上,当四边形AEDC 是平行四边形时,求边CD 的长.参考答案:(1)m =2,直线AC 的解析式为y =2x +2;(2)作AF ⊥y 轴,EG ⊥x 轴,可证△ACF ≌△DEG ,从而EG =4,DG =2,代入反比例函数E (3,4),∴OD =1,∴5CD =此环节设计时间在80分钟左右(60分钟练习+20分钟互动讲解)。
8年级升9年级摸底测试英语
八年级升九年级摸底测试欢迎你参加这次测试,祝你取得好成绩!姓名:Choose the best answer .She saw English film last Sunday . But she cannot remember name of film .A. an ; a ; aB. a ; the ; aC. an ; the ; aD. an ; the ; theThe man on watch didn’t see the iceberg until it was too late .A. at the frontB. in the frontC. at frontD. in frontThe room cool in summer and warm in winter .A. feelsB. is feltC. feels to beD. is felt to beIt is polite Miss Yang to carry these books .A. of you helpingB. for you to helpC. of you to helpD. for you helping Mary asked her mother .A. what to do itB. how to doC. where to liveD. where to live in The soldiers are always ready the old people if they any trouble .A. help ; haveB. to help ; haveC. helped ; will haveD. helping ; hasThe weather yesterday was today .A. not so cold as isB. not so colder as it isC. not so cold as it wasD. not so cold as it isHe said that he saw Mr. Brown into the building and go .A. going ; to upstairsB. go ; upstairsC. went ; to upstairsD. goes ; upstairsTake a plane , you’ll be able to get to Shanghai this afternoon .A. andB. orC. becauseD. sothe boy is to learn to talk !A. How slowB. How slowlyC. What a slowD. What a slowlyThey improved the software it easier for people computers .A. make , useB. to make , usingC. to make , to useD. to make , useLi Lei ran me quickly , he first the gate .A. passed , passedB. past , pastC. passed , pastD. past , passed Jones won the gold medal in the race in the 27th Olympic Games .A. women’s 100-metresB. women’s 100-metreC. women’s 100 metresD. women 100 metrePlease the other exercises after you finish the exercise .A. go on to doB. go on doingC. go on withD. go onWe were reading in the reading-room suddenly the lights went out .A. whileB. whenC. as soon asD. if— Lucy’s phone number is 5-6-3-2-6-4 , please .— on a piece of paper .A. Write down themB. Write them downC. Write it downD. Write downitTom Peter may go with you because one of them must stay at home .A. Not only ; but alsoB. Neither ; norC. Both ; andD. Either ; or He took off his shoes and them on the floor .A. broughtB. tookC. fellD. droppedstudents from the universities went to the west of China after they graduated (毕业).A. Thousand ofB. Thousands ofC. About ten hundredsD. Hundred of he read the book , he got in it .A. The more ; the more interestingB. The less ; the more interestingC. The more ; the more interestedD. More ; more interestedCloze text .Martin Henfield talks about some of his experiences(经历)as a twin : When we were small my mother dressed us 41 the same clothes . That was bad enough and we didn’t like it . But when we went on our first camping(野营)trip with the scouts(童子军), it was even 42 . We were only ten years old , and while 43 went into their sleeping bags for the night , we were not happy to snuggle(紧偎)inside a double sleeping bag my mother made for us .At school our classmates 44 us Henfield One and Henfield Two , so people couldn’t even see our difference according to(根据)our initials(姓名的开头字母)because 45 of us were M. O. It was only when I went to college and began to have my own friends that I started to feel my own freedom of identity(身份).Before I went to college , during my last secondary school 46 , I got a job on a building site(地点). My twin brother , Mike Henfield , didn’t work . He was resting . One day I said to the foreman(工头), “ Can I have a week off ? ”“ Certainly , ” he said , “ but you won’t have the job when you 47 back . ”I didn’t want to 48 the job . So on Monday morning , Mike went down in my jeans , jacket and hat and he worked 49 me for one week . None of them knew the difference .Now I am growing old and I feel very different 50 my twin brother . And he’ll tell you the same . We have really worked towards that for forty years .41. A. in B. for C. on D. with42. A. bad B. worse C. good D. best43. A. all boys B. another boy C. all the other boys D. all the boys44. A. called B. asked C. told D. knew45. A. every B. each C. both D. all46. A. holidays B. holiday C. week D. weekend47. A. get B. will get C. got D. are getting48. A. loose B. lost C. missing D. lose49. A. instead B. to C. instead of D. of50. A. in B. from C. with D. asIV. ReadingALearn about the emperor penguin’s lifeIt’s already cold in Antarctica(南极洲)by March . Remember , seasons in the southern half of the world are opposite to those in the north . Nearly all animalsleave there in the winter but not the emperors .(皇帝)In April , emperor penguins start to travel thousands of miles inland to give birth to their baby .The mother lays her egg during the Antarctic winter months of May and June . Hatching(孵卵)should be the mother’s work , right ? But no ! Penguin mums leave their eggs on the father’s feet and go far away to get food from the sea . It’s the father’s job to hatch the egg . It takes around 65 days !After about two months , the mother returns with food for the hatched baby . Now it’s the father’s turn to pig out !By December , the weather becomes warmer and the food gets richer . Baby penguins have now grown old enough to fish for their own food in the sea !51. How many months does the winter in Antarctica last ?A. 2 months .B. 3 months .C. 4 months .D. 5 months .52. Why do emperor penguins travel thousands of miles in land in April ?A. Because they want to have fun .B. Because they want to get food for winter .C. Because they give birth to their babies there .D. Because they want to go to the north .53. What’s the mother penguin’s job ?A. To lay eggs .B. To hatch eggs .C. To go far away to get food from the sea .D. Both A and C54. How long does it take to hatch the eggs ?A. 30 days .B. 50 days .C. 65 days .D. 100 days .55. The passage mainly tells us .A. how emperor penguins live through yearB. what emperor penguins look like and what they like to doC. when and where people can find emperor penguinsD. how emperor penguins live in winterBWhy are hot dogs so popular in US ?Put a sausage(香肠)in a bun(面包)and what have you got ? A hot dog of course !Americans eat a lot of hot dogs . Around sever billion hot dogs will be eaten in July alone this year . People living in the city of Los Angeles eat more hot dogs than people in any other US city .Some people like hot dogs better than hamburgers because they’re easier to eat . This is because the bun is thin and long and the sausage cannot fall out easily . Americans like to eat hot dogs at baseball matches and other sporting events(体育赛事). But they also buy them in the street and eat them as they walk along !Most Americans like mustard(芥末)on their hot dogs . America’s President (总统), George W. Bush’s favourite topping(蛋糕上的奶油等)is mustard with relish (调味品). Kids like ketchup(番茄酱)much better ! Lemonade and iced tea are the best drinks to have with hot dogs .But why are they called this ? Many people say “ hot dog ” was first used in 1901 . A cartoonist(漫画家)called Tad Dorgan was at a baseball game in New York .He heard food sellers shouting “ Get your sausages while they’re red hot ” , Dorgan then drew a cartoon using the word “ hot dog ” . Lots of Americans saw the cartoon and started using the name !56. Where can you find Americans eating hot dogs ?A. At a concert .B. At baseball matches .C. In the street .D. Both B and C57. Which of the following is the city where people eat the most hot dogs in the US ?A. New York .B. Boston .C. Los Angeles .D. Chicago58. What do people like to drink with hot dogs ?A. cola and soda .B. Milk and coffee .C. Tea and water .D. Lemonade and iced tea .59. The word “ hot dog ” was first used .A. to remember a cartoonistB. as the nickname of a baseball playerC. to sell a kind of red hot sausageD. in a cartoon60. The passage mainly tells us .A. how delicious hot dogs are and how to make themB. why Americans like hot dogs better than hamburgersC. how popular hot dogs are and how the name came into beingD. when and where Americans eat this kind of fast foodCIt is raining money !Imagine this . A big bag full of money falls from the sky and lands right next to you . What would you do with the money ?This is the question faced by British seven-year-old Damian in the film “ Millions .”Damian and his brother moved to a new place with their dad , after their mother passed away .Damian tries to make new friends , but he feels lonely .When Damian is watching some trains one day , a bag full of money falls out of the sky and lands at Damian’s feet . The bag has 265,000 pounds in it !He can’t wait to tell his brother , nine-year-old Anthony . But Anthony doesn’t want to tell their dad .Soon the money brings trouble . They have different ideas about what to do with it . Damian is kind-hearted . He wants to give money away to the poor . But Anthony wants to use it all to make more money ! As a kid , he also wants to buy a lot of fun toys !But they have only one week to spend the money before Britain starts using euros (欧元)!They also find out where the money came from ! The terrible owner wants it back !At the same time , their father works hard to give them a bigger house .What will they do with the money ? Watch the film to find out . Together with the two kids , you’ll learn that true wealth(财富)has nothing to do with money !61. Who found the bag full of money which falls from the sky ?A. Two real British boys .B. Two boys in a film .C. The father of two boys .D. A boy in a film .62. What does Damian sometimes do when he feels lonely ?A. Stays at home and watches TV.B. Plays with a lot of friends .C. Goes out and watches trains .D. We don’t know .63. What does Damian’s brother want to do with the money ?A. Give the money to the poor .B. Make more money with all of it .C. Buy a lot of toys .D. Both B and C .64. How much time do they have to spend the money ?A. A long time .B. Only one week .C. Before the owner find them .D. Before their father knows .65. We can tell from the story that .A. money is importantB. we should tell everything to our fatherC. money won’t bring true wealthD. we should go and watch trains to get money第II卷(非选择题部分)V. Complete the dialogue with complete sentences .(5分)A:What were you doing at eight last night ?B: 66A:Were you seeing Titanic ?B:Yes , I was .A: 67B:I was seeing it with my parents .A: 68B:The story is so sad . Titanic sank into the sea at last .A: 69B:Because it hit an iceberg .A:Why didn’t the ship try to avoid(避开)the iceberg ?B:They tried to , but it was too late .A: 70B:I think Miss Evans is the greatest person in this story . She lost her life for the children .VI. Fill in the blanks with the proper form of the given words .(5分)71. They both lost themselves in (listen)to the music .72. Is it (wet)today than it was yesterday ?73. The women over there were talking (noise).74. Excuse me , can I have a talk with one of the (win)of the match .75. His sister isn’t (marry)and has no children .76. She said it was (terrible)cold on the night of November the 1st .77. Mabel is always (worry)about her Chinese .78. They can’t find their way to the station , they need (look)at a map .79. We (stay)here until it stops raining .80. The ship Californian arrived so late that it couldn’t save so many people’s (life).VII. Gap-filling(5分)The Shutes lived in America . Mrs. Shute w 81 a housewife . She had a c82 monkey for many y 83 . The monkey could wash dishes . He washed the dishesf 84 the woman every day . He liked to wash dishes . He spent hour after hour w85 dishes . None of them was b 86 but sometimes he washed the dishes over and over . I 87 Mrs. Shute tried to stop him , he then got a 88 . He began to throw dishes in a 89 directions(方向). But this didn’t h 90 very often .VIII. Answer the questions according to the given pictures(10 分)91. What was the weather like ?92. Where did the two girls go ?93. What did they see when they walked across the bridge ?94. The boy wasn’t in danger , was he ?95. What did they do then ?IX. Translation :(10分)96. 我弟弟太小了,不会照料自己。
中考生物摸底试卷含解析
中考生物摸底试卷含解析一、选择题1.用显微镜观察时,要将如图中视野甲转换为视野乙,下列操作合理的是()A.首先调节细准焦螺旋B.首先将镜筒缓缓下降到最低处C.将低倍物镜转换为高倍物镜D.移动玻片标本2.某老师最近患了咽炎.医生使用抗生素在其臀部肌肉注射治疗,药物在作用于咽部之前,最先到达心脏的()A.左心房B.左心室C.右心房D.右心室3.某种金合欢有大而中空的刺,蚂蚁栖居其中,并以金合欢嫩叶尖端的球状小体为食。
为探究栖居蚂蚁对金合欢生长的影响,用金合欢幼苗进行实验,研究结果如下表。
实验说明栖居蚂蚁对金合欢的生长金合欢幼苗的生长状况没有蚂蚁栖居的金合欢有蚂蚁栖居的金合欢10个月中的存活率(%)4372幼生长高度(厘米)5月25日至6月16日0→6.20→31.06月17日至8月3日 6.2→10.231.0→72.9A.有促进作用B.有抑制作用C.有利也有弊D.无任何影响4.2018年11月,三江源国家公园管理局、世界自然基金会(WWF)联合在三江源国家公园调查水鸟时,偶然拍摄到一只非常稀有的黑狼。
有关专家称,该黑狼的父母可能都是含有相同黑色隐性基因的灰狼。
如果用H和h表示控制狼毛色的一对基因,根据该专家的推测,该黑狼毛色的遗传过程可表示为()A.B.C.D.5.用四个培养皿在表中所示条件下培养大肠杆菌(除研究因素外,其它条件都相同),培养36小时后获得如下结果,能说明维生素可以促进大肠杆菌繁殖的是()培养皿培养基温度培养皿上的菌落数I琼脂、糖类30℃35Ⅱ琼脂、糖类、维生素30℃250Ⅲ琼脂、维生素30℃0Ⅳ琼脂、糖类、维生素25℃150A.ⅡB.Ⅱ和ⅢC.I和ⅡD.Ⅱ和Ⅳ6.将一株绿色植物放入密闭瓶中,连通二氧化碳浓度测定仪,将其置于室外培养,测定晴朗的一天内瓶中二氧化碳浓度变化,绘制成如下图所示的曲线。
下列分析正确的是()A.ab段植物只进行呼吸作用,不进行光合作用B.在c点植物的光合作用和呼吸作用强度相等C.在bd段植物进行的生理作用有光合作用和呼吸作用两种D.这株绿色植物在一天内积累了有机物,在d点时有机物总量最多7.18世纪的英国曼彻斯特地区山清水秀,这里的桦尺蠖大多数是浅色的,少数是深色的。
2024届九年级下学期开学摸底考试卷(武汉专用)(考试版)
2024届九年级下学期开学摸底考试卷(武汉专用)语文(考试时间:150分钟试卷满分:120分)注意事项:1.答卷前,考生务必用黑色字迹的钢笔或签字笔将自己的准考证号、姓名、考场号和座位号填写在答题卡上。
用2B铅笔在“考场号”和“座位号”栏相应位置填涂自己的考场号和座位号。
将条形码粘贴在答题卡“条形码粘贴处”。
2.作答选择题时,选出每小题答案后,用 2B 铅笔把答题卡上对应题目选项的答案信息点涂黑;如需改动,用橡皮擦干净后,再选涂其他答案,答案不能答在试卷上。
3.非选择题必须用黑色字迹的钢笔或签字笔作答,答案必须写在答题卡各题目指定区域内相应位置上;如需改动,先划掉原来的答案,然后再写上新的答案;不准使用铅笔和涂改液。
不按以上要求作答的答案无效。
4.考试结束后,将本试卷和答题卡一并交回。
一、阅读(共55分)阅读下面的实用类文本,完成下面小题。
(3小题,共10分)植物也“聊天”①遇到家族亲属,会亲切地打个招呼,还会协调关系避免“窝里斗”;遇到竞争对手,就迅速地威胁警告,并释放毒素抑制对方生长。
②你能想象吗?做出这些反应的是平时看上去仿佛很安静的植物。
在看不见的地下,植物也“聊天”,它们的世界很“热闹”。
③研究发现,乡邻植物可以通过释放化学物质,进行对外交流。
这种由化学物质主导的对外交流,可以改变植物生长的微环境,调节养分供给,甚至影响产量。
以中国南方经常相邻种植的竟然促进相邻的花生和木薯为例,我们来看它们是怎么交流的。
④木薯先从根部向土壤中释放出氰化物,近的花生接收到这些信号后,就释放相应的乙烯。
在乙烯影响下,花生会主动缩减植株的繁茂程度,优先保证果实的养分供给。
同时,乙烯还能聚集土壤中的有益微生物到花生根部,提高花生对氮、磷等有效养分的吸收率,进而提高花生果实的饱满程度和产量。
⑤此外,植物还可以对外发送物理信号(声信号、点信号等)进行交流。
澳大利亚生物学家的实验证明将罗勒栽种到胡椒附近,胡椒的长势就会变得更好。
九年级摸底考试生物试卷
2023-2024学年度第二学期九年级摸底考试生物试卷试卷总分:50分考试时间:120分钟一、单项选择题(本大题包括20道题目,每小题1.5分,共30分)1.下列不属于生命现象的是()A.蜻蜓点水B.春暖花开C.角马迁徒D.秋风送爽2.近日,西北农林科技大学团队联合青海省西宁市动物疫病预防控制中心首次采用体细胞克隆技术培育出“克隆藏羊”,体细胞中控制生物发育和遗传的结构是()A.细胞膜B.细胞核C.细胞壁D.细胞质3.我国天舟六号货运飞船携带的神秘生物材料——人体干细胞(一种具有分裂、分化能力的体细胞)在空间站用于实验,其中一部分将被诱导为生殖细胞。
该过程中染色体数会()A.保持不变B.增加一倍C.减少一半D.增加两倍4.某同学将一株质量为20克的番茄幼苗栽种在光照等适宜生长的环境中,一段时间后植株达到400克。
其增加的质量不可能来自()A.二氧化碳B.水C. 土壤中的有机物D.上壤中的无机盐5.如图为大豆种子的结构示意图,下列叙述错误的是()A.胚是新植株的幼体,由图中的①、②、③、④组成B.④为子叶,贮藏着大量的营养C.种子萌发时,③首先突破种皮,发育成根D.种子萌发需要的外界条件包括一定的水、充足的阳光和适宜的温度6.胡萝卜中富含胡萝卜素.在人体内能转变成维生素A,经常食用可预防()A.夜盲症B.坏血病C.呆小症D.佝偻病7.当考前紧张时.我们可以深呼吸来缓解情绪吸气时,下列说法正确的是()A.膈肌舒张B.肋骨间肌肉收缩C.胸廓容积缩小D.膈顶部上升8.小明去医院做血常规化验时,医生会从他的手指上取一滴血,然后做成涂片置于显微镜下观察。
在这张涂片中,医生可以看到的血细胞有()A.白细胞B.血小板C.红细胞D.以上均有9.“红灯停,绿灯行”是最基本的交通规则,这一反射的结构基础是()A.大脑B.神经元C.神经系统D.反射弧10.当人体的血液流经肾脏后,所含成分眼明显的变化是()A.尿素减少B.尿素增加C.氧气增加D.二氧化碳减少11.生物学家发现了一种单体最大长度可达到2厘米的华丽硫珠菌,是有史以来发现的最大的细菌。
2024年新九年级数学开学摸底考试卷+解析(江西专用,人教版)(解析版)
新九年级数学开学摸底考试卷解析(江西专用,人教版)(考试时间:120分钟 试卷满分:120分)注意事项:1.答卷前,考生务必将自己的姓名、考生号等填写在答题卡和试卷指定位置上。
2.回答选择题时,选出每小题答案后,用铅笔把答题卡对应题目的答案标号涂黑。
如需改动,用橡皮擦干净后,再选涂其他答案标号。
回答非选择题时,将答案写在答题卡上。
写在本试卷上无效。
3.考试范围:八下全册+九上第1章4.考试结束后,将本试卷和答题卡一并交回。
一、选择题(本大题有6个小题,每小题3分,共18分.在每小题给出的四个选项中,只有一项是符合题目要求的)1.下列方程是一元二次方程的是( )A .x x +=−531B .210ax x ++=C .237x y +=D .2312x x −=A B .2C 2= D =故选:D .3.用配方法解方程2810x x −+=,变形后的结果正确的为( )A .()2415x −=−B .()241x −=−C .()2415x −=D .()2417x −= 【答案】C【分析】本题考查了配方法解一元二次方程,一般步骤是:先把二次项系数化为1,加上一次项系数一半的平方,再减去这个数,即完成了配方;根据配方过程即可完成.【详解】解:配方,得:22284410x x −+−+=,即()24150x −−=,则()2415x −=;故选:C .4.在ABC 中,,,A B C ∠∠∠所对的边分别为,,,a b c 由下列条件不能判断它是直角三角形的是( ) A .222+=a b cB .222a c b =−C .A B C =+∠∠∠D .1,2,BC AC AB === 、22a b +=即ABC 是直角三角形,故本选项不符合题意;即ABC 是直角三角形,故本选项不符合题意;、A B ∠=∠180A ∠=︒即ABC 是直角三角形,故本选项不符合题意;、1BC =,22BC AB +≠ABC ∴不是直角三角形,故本选项符合题意;故选:D5.函数y kx b =+的图象如图所示,下列说法正确的是( )A .当2x =−时,1y ≠B .0k <C .若y kx b =+的图象与坐标轴围成的三角形面积为2,则2b =D .若点()1,m −和点()1,n 在直线上,则m n >M ,N 分别是边AD ,边BC 上的动点.下列四种说法:①存在无数个平行四边形MENF :②存在无数个正方形MENF ;③当0.5EF =时,存在唯一的矩形MENF ;④当1EF =时,存在唯一的矩形MENF .其中正确的个数是( )A .1B .2C .3D .4【答案】B7x 的取值范围为 .【答案】3x ≤【分析】本题考查了二次根式有意义的条件.熟练掌握二次根式有意义的条件是解题的关键. 由题意知,30x −≤,计算求解即可.【详解】解:由题意知,30x −≥,解得,3x ≤,故答案为:3x ≤.8.若关于x 的一元二次方程()22110m x m x ++−=有一个根为1,则m = .【答案】0【分析】本题考查了一元二次方程的定义,一元二次方程的根;根据一元二次方程的定义可得出1m ≠−;根据题意将1x =代入方程求出m 的值,即可求解.【详解】解:∵该方程是一元二次方程,∴10m +≠,即1m ≠−;∵关于x 的一元二次方程()22110m x m x ++−=有一个根为1,故将1x =代入方程为2110m m ++−=,整理得:()10m m +=,解得:0m =或1m =−(舍去),故答案为:0.9.若点19,2A x ⎛⎫ ⎪⎝⎭,()2,4B x 都在一次函数31y x =+的图象上,则1x 2x (填“>”或“<”).250x x +−=3a a b ++的值为 .【答案】3【分析】本题考查一元二次方程的根与系数的关系、一元二次方程解的定义、代数式求值,熟练掌握一元二次方程的根与系数的关系和一元二次方程解的定义是解题的关键.根据一元二次方程的根与系数之间的关系可得2a b +=−,再根据一元二次方程解的定义可得225a a +=,再整体代入求解即可.【详解】解:∵a ,b 分别是方程2250x x +−=的两根,∴2a b +=−,把x a =代入方程得,2250a a +−=,即225a a +=,∴223=2=25=3a a b a a a b +++++−+,故答案为:3.11.如图,已知钓鱼杆AC 的长为10米,露在水面上的鱼线BC 长为6米,把鱼竿AC 转动到AC '的位置,此时露在水面上的鱼线B C''长度为8米,则BB'的长为米.连接CE,CF,若EFC是等腰三角形,则CF的长为.,根据EFC是等腰三角形,分菱形EFC是等腰三角形,==EF CH∴三、(本大题共5小题,每小题6分,共30分,解答应写出文字说明、证明过程或演算步理) 13.计算(1) (2)(1)()()1356x x x ++=+(配方法);(2)()()221420x x +−−=(自选方法)∴()()()()1221220x x x x ⎡⎤⎡⎤++−+−−=⎣⎦⎣⎦∴()()3350x x −−+=,∴330x −=或50x −+=,∴11x =,25x =.15.如图,在ABC 中,3,4,5AB AC BC ===.(1)直接写出ABC 的形状是_________;(2)若点P 为线段AC 上一点,连接BP ,且BP CP =,求AP 的长. Rt ABP 中,根据勾股定理可得关于,∴ABC 是直角三角形;故答案为:直角三角形Rt ABP 中,(24x +=−按下列要求作图.(1)如图1,若AE AB=,在DE上找一点F,使点F为DE的中点;(2)如图2,点AE AB≠,在平面内找一点G,使BCG与DAE全等.17.为巩固脱贫攻坚成果,实行乡村振兴,某村村民利用网络平台“直播带货”,销售一批成本为每件50元的商品,经调查发现,该商品每天的销售量y(件)与销售单价x(元)之间满足一次函数关系,部分数据如表所示:(2)销售期间,网络平台要求该商品每件商品售价不得高于100元,要使该商品每天的销售利润为700元,求此时商品售价;四、(本大题共3小题,每小题8分,共24分,解答应写出文字说明、证明过程或演算步理)18.定义:若两个二次根式a,b满足a b c⋅=,且c为有理数,则称a与b是关于c的共轭二次根式.______的共轭二次根式;(2)若m与2的共轭二次根式,则m=______;(3)若36是关于12的共轭二次根式,求n的值.,.AE BF(1)求证:四边形ABFE为平行四边形;(2)当AB=4ADE∠=︒时,求BF的长.BC=,135AB CD,AB EF DC,EFAB CD,AB四边形DCFEEF DC,EF∥,ABEF名同学进行了8次一分钟跳绳测试,现将测试结果绘制成如下统计图表,请根据统计图表中的信息解答下列问题:a______;b=______.(1)表中=(2)求出乙得分的方差.(3)根据已有的信息,你认为应选谁参赛较好,请说明理由.【答案】(1)177.5,185(2)乙的方差为37.5(3)应选甲参赛较好(答案不唯一),理由见解析【分析】(1)先把甲的成绩按照从小达到排列,再根据中位数与众数的含义求解即可;(2)直接利用方差公式进行计算即可得到答案;(3)可以从平均数,中位数与众数的角度进行分析,从而可得答案.185出现了∴众数b 是21.如图,在平面直角坐标系中,四边形OCDE 为矩形,点C 的坐标为()3,0,正比例函数2y x =的图象交DE 于点A ,过点A 作AO 的垂线交CD 于点B ,且满足AO AB =.(1)求点B 的坐标;(2)点M 在线段AB 上,横坐标为a ,设OCM 的面积为S ,请用含a 的式子表示S .,证明AEO BDA ≌,得到的解析式,表示出点M 的坐标,然后利用三角形面积公式即可求出答案.)解:点OA AB⊥∴∠=OAB四边形=OA AB(AAS ∴≌AEO BDA点点A m.相交于点(,3)(1)求直线y kx b=+的函数解析式;(2)点F在直线y kx b=+上,使COF的面积为3,求出点F的坐标;(3)若点P在线段OA上,点D在直线AC上,点H在x轴上,当四边形OPHD是正方形时,求点P的坐标.,则COF的面积可用)解:点点OCF S =四边形OH PD ∴=,OH PD ⊥,OM 点P 在直线y x =上,∴设(,)P x x .点D 在直线23y x =−上,∴设点D 的坐标为:(,2x x 23.【问题情景】如图1,在菱形ABCD 中,AB =N 为菱形ABCD 外部一点,连接AN 交对角线BD 于点M ,且满足180AMD ANC ∠+∠=︒.【初步探究】(1)求证:AM MN =;【解决问题】(2)如图2,连接DN ,当AM =6CN =时,①求线段BM 的长;②求BDN ∠的度数;【类比探究】(3)如图3,在菱形ABCD 中,当90BCD ∠=︒时,AN 交CD 于点E ,连接BE ,DN ,并延长BE 交DN于点F .若DM AD =NF 的长____________.证明ABM CBM ≌,得到,得到ANC AMB ∠=∠中点,证明ADM DCN ≌,ADE △利用勾股定理22DF BD BF =−四边形AB CB ∴=,ABM CBM =∠∠BM BM =,ABM CBM ∴△△≌.AMD ∠+∠又AMD ∠+∠ANC ∴∠=∠BD CN .BMC MCN =∠AMD ∠+∠又180AMD AMB ∠+∠=︒, ANC AMB ∴∠=∠.BDCN ∴. BD CN ,EN ∴四边形是平行四边形,又四边形OA OC ∴=,OB OD =,BD AC ⊥.由(1)得,AM MN =,OM ∴为ACN 的中位线.1Rt AOB 中,BM OB OM =+∴∠由(1)得,∥BD CN ,90ACE AOD ∴∠=∠=︒.90CED ACE COD ∴∠=∠=∠=︒.∴ 90QNC ∠=︒,由(1)得,∥BD CN ,∴ 四边形ABCD 是正方形,∴ AD CD AB BC ====设DG x =,则2DM x =,MD≌,ADM DCN10。
初二升初三数学摸底测试题
初二升初三摸底题一、选择题1.已知y1=x-5,y2=4x-1,使不等式y1>y2成立的x值中最大整数是().A.-2 B.-2 C.-1 D.02.如图1所示,已知OA=OB,OC=OD,AD,BC相交于E,则图中全等的三角形的个数是(• ).A.2 B.3 C.4 D.5(1) (2) (3)3.如图2所示,某同学将一块三角形的玻璃打碎成了三块,现在要到玻璃店去配一块完全一样的玻璃,那么最省事的办法是().A.带①去 B.带②去 C.带③去 D.带①②去4).A.y15.函数).A.6.如图3).A.7A.1.已知23.已知△=______cm,B′C′56,0).1(1(2)若要使车间每天获利不低于1800元,问至少应派多少人加工乙种零件.3.如图,已知AC=AB,AE=AD,∠EAB=∠DAC,问BD与EC相等吗?说明理由.4.(探究题)如图所示,∠ACB=∠ADB=90°,AC=AD,E在AB上,试说明:(1)点A•在∠CBD的平分线上.(2)CD=DE.初二升初三摸底题一、填空时间:120分钟1.当a=99,分式211aa--= .来源于网络来源于网络2.若__________,9810______;,322=+++====-zy z y x z y x y x y y x 则若则. 3.两个矩形的面积分别是a 2-4a +4,2a 2-8这两个矩形有一边的长度相同,这条边是 .4.化简:2512 = ,32318-= . 5.若点M (2m+1,3-m )关于y 轴的对称点M ′在第二象限,则m 的取值范围是 .A .(x +8)(x +1)B .(x +2)(x -4)C .(x -2)(x +4)D .(x +8)(x -10)2.已知三个数m -1,3-m ,2m 在数轴上对应的点从左到右依次排列,那么m 的取值为( )A .1?<m <2B .-1?<m <1C .-1?<m <2D .无解3.计算211111a a ⎛⎫⎛⎫-- ⎪⎪-⎝⎭⎝⎭的结果为( )来源于网络 A .1a a +- B .1a a - C .1a a - D .11a a+- 4.调查某班级的学生对数学老师的喜欢程度,下列最具有代表性的样本是( )A .调查单学号的学生B .调查所有的班级干部C .调查全体女生D .调查数学兴趣小组的学生5.一个三角形的边长分别为3,5,7,另一个与它相似的三角形的最长边是21,则其余两边之和为( )A .19B .17C .24D .216.若分式方程322=+mx 有增根,m 的值为( ) A .7. 已知A .8. 9.A .1.已知2.34. (2) 51分,结果两人一共投中了20个,经计算,发现两人的得分刚好相等,你知道他们两人各投中几个吗?6.如图,已知在△ABC 中,D 点在AC 上,E 点在BC 的延长线上求证: ∠ADB >∠CDE7. 如图,ΔACD 、ΔBCE 都是等边三角形,ΔNCE 经过旋转后能与ΔMCB 重合.请回答:(1)旋转中心是哪一点?(2)旋转了多少度?找出图中中两对全等的三角形.(不要证明)(3)若NE=10cm,则MB等于多少?8. A、B两辆汽车同时从相距330千米的甲、乙两地相向而行,s(千米)表示汽车与甲地的距离,t(分)表示汽车行驶的时间,如图,L1,L2分别表示两辆汽车的s与t的关系。
2021年华东师大版(初中)数学初三(九上)开学摸底测试卷及部分答案(共3套)
华东师大版(初中)数学初三(九上)入学摸底考试测试卷(一)一.选择题(共10小题,满分40分,每小题4分)1.若有意义,则a的取值范围是()A.a=﹣1B.a≠﹣1C.a=D.a≠2.我国北斗公司在2020年发布了一款代表国内卫星导航系统最高水平的芯片,该芯片的制造工艺达到了0.000000022米.用科学记数法表示0.000000022为()A.22×10﹣10B.2.2×10﹣10C.2.2×10﹣9D.2.2×10﹣8 3.如图,在平行四边形ABCD中,DE平分∠ADC,AD=6,BE=2,则平行四边形ABCD 的周长是()A.16B.18C.20D.244.在直角坐标系xOy中,点A(a,3)与B(﹣1,b)关于y轴对称,则a,b的值分别为()A.a=1,b=3B.a=﹣1,b=﹣3C.a=﹣1,b=3D.a=1,b=﹣3 5.把直线y=3x向下平移一个单位长度后,其直线的表达式为()A.y=3x+3B.y=3x+1C.y=3x﹣3D.y=3x﹣1 6.永宁县某中学在预防“新冠肺炎”期间,要求学生每日测量体温,九(5)班一名同学连续一周体温情况如表所示:则该名同学这一周体温数据的众数和中位数分别是()日期星期一星期二星期三星期四星期五星期六星期天体温(℃)36.236.236.536.336.236.436.3 A.36.3和36.2B.36.2和36.3C.36.2和36.2D.36.2和36.1 7.如图,在菱形ABCD中,AB=5cm,∠ADC=120°,点E、F同时由A、C两点出发,分别沿AB、CB方向向点B匀速移动(到点B为止),点E的速度为1cm/s,点F的速度为2cm/s,经过t秒△DEF为等边三角形,则t的值为()A.B.C.D.8.如果平行四边形的四个内角的平分线能够围成一个四边形,那么这个四边形一定是()A.平行四边形B.矩形C.菱形D.正方形9.已知一次函数y=x﹣1的图象如图所示,下列正确的有()个.①点(﹣2,﹣3)在该函数的图象上;②方程x﹣1=0的解为x=2;③当x>2时,y的取值范围是y>0;④该直线与直线y=﹣4+x平行.A.4B.3C.2D.110.如图,一直线与两坐标轴的正半轴分别交于A,B两点,P是线段AB上任意一点(不包括端点),过点P分别作两坐标轴的垂线与两坐标轴围成的矩形的周长为8,则该直线的函数表达式是()A.y=﹣x+4B.y=x+4C.y=x+8D.y=﹣x+8二.填空题(共6小题,满分24分,每小题4分)11.计算:a﹣2b2•(a2b﹣2)﹣3=.12.在反比例函数y=的图象的每一支上,y都随x的增大而减少,则k的取值范围是.13.矩形的一条对角线长为4,对角线的夹角其中一个为60°,该矩形的周长为.14.有甲、乙两组数据,如下表所示:甲1112131415乙1212131414甲、乙两组数据的方差分别为s甲2,s乙2,则s甲2s乙2(填“>”,“<”或“=”).15.如图,正方形ABCD的边长为1,点E在对角线BD上,且∠BAE=22.5°,则BE的长为.16.如图,已知△ABO的顶点A和AB边的中点C都在双曲线y=(x>0)的一个分支上,点B在x轴上,CD⊥OB于D,若△AOC的面积为3,则k的值为.三、解答题:本题共9小题,共86分.解答应写出文字说明、证明过程或演算步骤.请在答题纸的相应位置解答.17.(8分)解方程:﹣=1.18.(8分)已知:如图,在菱形ABCD中,E、F分别在边BC、CD上,且CE=CF,求证:AE=AF.19.(8分)先化简:(﹣)÷,再从﹣3、﹣2、﹣1、0、1中选一个合适的数作为a的值代入求值.20.(8分)尺规作图:如图,在矩形ABCD中,分别在AD、BC上作点E、F,使四边形BEDF是菱形(不写作法,保留作图痕迹).21.(8分)如图,在平行四边形ABCD中,∠BCD的平分线与BA的延长线相交于点E,BH⊥EC于点H.(1)求证:CH=EH;(2)若AD=5,CD=3,求AE的长.22.(10分)为了让学生体验生活,某学校决定组织师生参加社会实践活动,现准备租用7辆客车,现有甲、乙两种客车,它们的载客量和租金如下表,设租用甲种客车x辆,租车总费用为y元.甲种客车乙种客车载客量(人/辆)6045租金(元/辆)360300(1)求出y与x之间的函数关系式;(2)若该校共有380名师生前往参加活动,确保每人都有座位坐,共有哪几种租车方案?(3)在(2)的条件下,带队老师从学校预支租车费2500元,试问预支的租车费用是否有结余?若有结余,最多可以结余多少元?23.(10分)如图,一次函数y1=ax+b与反比例函数y2=的图象相交于A(2,8),B(8,2)两点,连接AO,BO,延长AO交反比例函数图象于点C.(1)求一次函数y1的表达式与反比例函数y2的表达式;(2)当y1<y2,时,直接写出自变量x的取值范围为;=S△AOB时,请直接写出点P的坐标(3)点P是x轴上一点,当S△P AC为.24.(12分)以诗育德,以诗启智,以诗怡情,以诗塑美,我区某中学开展诗歌创作比赛,积极营造诗韵书香学生生活.年级决定购买A、B两种笔记本奖励在此次创作比赛中的优秀学生,已知A种笔记本的单价比B种笔记本的单价便宜3元,已知用1800元购买A 种笔记本的数量是用1350元购买B种笔记本的数量的2倍.(1)求A种笔记本的单价;(2)根据需要,年级组准备购买A、B两种笔记本共100本,其中购买A种笔记本的数量不超过B种笔记本的二倍.设购买A种笔记本m本,所需经费为W元,试写出W与m的函数关系式,并请你根据函数关系式求所需的最少经费.25.(14分)在平面直角坐标系中,四边形OABC是矩形,点A(8,0),点C(0,6),对角线AC、OB相交于点D,点E在x轴正半轴上,连接DE,以BD、DE为邻边作▱BDEF,连接DF.(1)如图1,求证:DF∥OA;(2)如图2,连接AF,当四边形BDEF为矩形时,求AF的长;(3)当△DEF 为等腰三角形时,求点F的坐标.华东师大版(初中)数学初三(九上)入学摸底考试测试卷(二)一、选择题:每小题有四个选项,其中只有一项答案是正确的;每小题4分,共48分。
八年级升九年级英语摸底试题
八年级升九年级英语摸底试题九年级英语入学试题一、单项选择填空1. The hotel is the best here. It has rooms.A. the worseB. most comfortableC. bestD. the most comfortable2. ——Where is Jack? ——He basketball on the playground.A. playsB. is playingC. is going to playD. play3. He likes singing songs, but I sing than he does.A. more goodB. bestC. worseD. better4. ——Could you please help me do the laundry this afternoon?——I will be free after 2:30 in the afternoon.A. Sorry, I can’tB. No, you can’tC. Sure,I’d love toD. Of course not5. —did he play soccer?—About 3hours.A. How manyB. How muchC. How oftenD. How long6. Let’s buy a big house the money.A. forB. withC. useD. spend7. The art exhibition will me rich and famousA. doB. haveC. helpD. make8. —When did she the u. s ?—Three years agoA. tourB. travelC. goD. watch9. Her younger brother is young to go to schoolA. soB. veryC. tooD. really10. —Who’s,Tom or Tim? —T om isA. quieterB. more healthyC. worstD. best11. —Do you look the same? —No, I am taller than herA. LittleB. fewC. a littleD. many12. —Who the souvenir? —Maria didA. is going to bayB. boughtC. buysD. wants to bay13. —Arthur is a loving grandmother —Yeah, she all her free time with her grandchildren.A. paysB. takesC. usesD. spends14. I’m going to write articles and them to magazines and newspapers.A. sendB. takeC. bringD. give15. —When did he go to Beijing? —He went there may 12thA. inB. atC. onD. by16.—When were you born , Lily ?-I was born ________ June 17 , 1987 .A. inB. onC. atD. to 17.Do you enjoy _________ at the party last Saturday ?A. oneselfB. themselvesC. ourselvesD. yourselves18. My father likes _________ stories in his free time .A. readingB. watchingC. seeingD. looking19. ________ of them went to the zoo , _________ went to the park .A. Some , othersB. Some , the othersC. Some , someD. All , others20. ________ I finish middle school , I’ll go to a vocational school .A. BeforeB. WhenC. AfterD. Because21. I like the green coat , ________ my mother likes the red one better .A. andB. butC. soD. or22. We saw many people wait for the bus ___________ .A. at the bus stopB. in the wayC. on the wayD. by the way23.We _________ in this school for about two years .A. studyB. studiedC. will studyD. have studied24.. My apartment is not _________ .A. big very muchB. enough a bigC. a big enoughD. big enough25.. She met her uncle _________ her way _________ school .A. at , /B. on , /C. at , toD. on , to/doc/2f1839133.html,st Saturday , we visited _________ house in the country .A. the GreenB. the Greens’C. GreensD. the Greens27.. Mr. Smith ________ an hour on this work .A. spentB. tookC. usedD. paid28. The visitors _________ here two hours ago .A. arrived inB. got toC. arrivedD. arrived at29.. _______ do you want to be when you grow up ?A. WhatB. HowC. WhoD. When30. We can do more English listening and speaking in a ___________ .A. computer roomB. physics labC. language labD. reading room二、完形填空Why do I want to go to college? No one has ever asked me (31) a question. But many times I have asked myself. I have (32) a whole variety of reasons.(不同的理由) (33) important reason is that I want to be a better man.Many things make human beings different (34) or better than or even superior to animals.One of the most important things is (35) .If I fail to receive(不能接受) higher education, my education (36) .As I want to be a fully (37) man ,I must get a well-rounded education, which good colleges and universities are supposed to (38) ,I know one can get educated in many ways ,but colleges and universities are (39) the best places to teach me how to educate myself. Only when I am well-educated, will I be a better human beings and (40) fit into society.( )31.A.quite B. The most C. such D. another ( )/doc/2f1839133.html,e up with B. agree withC. been fed up withD. get on well with( )33.A.Most B. The mostC. MoreD. Much( )34.A.to B. aroundC. betweenD. from( )/doc/2f1839133.html,cation B. weatherC. temperatureD. science( )36.A.finished B. Don’t finishC. will not finishD. has finished( )37.A.develop B. developedC. developingD. experience( )38.A.improve B. graduateC. hearD. provide( )39.A.between B. amongC. insideD. outside( )40.A.can good B. may betterC. be able to betterD. be able to best三、阅读理解A Mrs Fang’s DayAt 7:40 when Mrs Fang is at breakfast ,there comes a call, Twenty minutes later ,she is with Ann, because she cannot stopher baby from crying .There , Mrs Fang helps wash Ann’s t hree-day-old baby and it sooncalms(安静)down ,It is her first child and she is learning what to do .After that , Mrs Fang goes on to see Mr Johnson, a rich old man who lives alone .His arm was broken and cannot wash or put on his clothes himself. He must be looked after every day.Then Mrs Fang gets her second call that day. She goes to the home for the old . There she works with the old people till 2:00 p.m.. One by one, she answers their questions and helps them take their medicines ,while the doctor takes care of other more serious problems.Mrs Fang keeps hurrying around all day and sometimes she can be rung up even late at night when the sick must be helped She is busy, but she likes her job and enjoys helping others.41.Mrs Fang gets her first call from .A. Mr FangB. Mr JohnsonC. AnnD. the baby42.Ann is .A. a young nurseB. a new doctorC. old and sickD. alone but happy43. Mrs Fang goes to help Mr Johnson because he is .A. rich and tallB. busy and tiredC. cold and sickD. alone but happy44.Mrs Fang often stops her work in the home for the old atabout .A. 2:00 p.m.B.3:00p.m.C.4:00p.m. D5:00p.m.45.From the passage(短文),we can know that .A. Mrs Fang is a doctor in a hospitalB. Mrs Fang must be a nurse in the community (社区)C. Mrs Fang is a teacher in a schoolD. Mrs Fang must be a student。
九年级摸底考试试卷【含答案】
九年级摸底考试试卷【含答案】专业课原理概述部分一、选择题(每题1分,共5分)1. 下列哪个是光合作用的主要产物?A. 氧气B. 二氧化碳C. 水D. 糖2. 哪个是动物细胞特有的细胞器?A. 叶绿体B. 线粒体C. 内质网D. 溶酶体3. 地球大气层中含量最多的气体是?A. 氧气B. 二氧化碳C. 氮气D. 氢气4. 下列哪个元素是人体骨骼的主要组成成分?A. 钙B. 铁C. 钾D. 硫5. 下列哪个过程描述的是物质从液态变为气态?A. 蒸发B. 凝固C. 熔化D. 冻结二、判断题(每题1分,共5分)1. 水是由两个氢原子和一个氧原子组成的化合物。
()2. 地球是太阳系中的第三颗行星。
()3. 鸟类是哺乳动物。
()4. 植物细胞和动物细胞都有细胞膜。
()5. 金属在常温下都是固体。
()三、填空题(每题1分,共5分)1. 光合作用是植物通过叶绿体,利用光能将水和二氧化碳转化为有机物和氧气的过程。
2. 地球的自转周期大约是24小时。
3. 人体最大的器官是皮肤。
4. 声音的传播需要介质,如空气或水。
5. 食物链中,生产者是能够通过光合作用制造有机物的生物。
四、简答题(每题2分,共10分)1. 描述水的三个状态及其相互转化的条件。
2. 简述人体的呼吸过程。
3. 解释地球公转和自转的概念及其产生的现象。
4. 什么是生态系统?列举其基本组成部分。
5. 简述牛顿的三大运动定律。
五、应用题(每题2分,共10分)1. 如果一个物体的质量是5千克,受到一个10牛的力作用,计算它的加速度。
2. 某化学反应的化学方程式为2H2 + O2 → 2H2O,如果反应物中有4摩尔的H2和2摩尔的O2,计算反应后的水的摩尔数。
3. 一个长方形的长是10厘米,宽是5厘米,计算它的面积。
4. 如果一辆汽车以60公里/小时的速度行驶,计算它在2小时内行驶的距离。
5. 在一个等边三角形中,如果一条边的长度是6厘米,计算这个三角形的周长。
八升九摸底测试1
八升九摸底测试学生姓名:(注意:取g=10N/kg )一、单项选择题(每小题3分,共24分。
) 1.下列估测数据,符合实际情况的是A .人的拇指宽约为10cmB .人体正常体温约为40℃C .一个中学生的体重约为500ND .成年人步行速度约为12 m/s 2.如图1所示,使用中属于费力杠杆的工具是3.忽略空气阻力,抛出后的小球在空中运动轨迹如图2所示,抛出后的小球由于A .不受力,运动状态发生改变B .不受力,运动状态不发生改变C .受到重力作用,运动状态发生改变D .受到推力作用,运动状态发生改变4.如图3所示,是利用每秒闪光10次的照相装置拍摄到的四个物体运动的闪光照片(图中的黑点代表物体),其中可能作匀速直线运动的物体是 5.位于市区商业大楼旁的观光电梯竖直上升的过程中,电梯内乘客可透过电梯的玻璃观看路面的树木。
下列说法正确的是A .以树木为参照物,乘客是静止的B .以电梯为参照物,乘客是运动的C .以地面为参照物,电梯是静止的D .以乘客为参照物,树木是运动的 6. 汽车是重要的交通工具,以下关于汽车的说法中正确的是①汔车突然启动时乘客会向后倾倒,是因为乘客受到惯性的作用;②汽车在平直的公路上匀速行驶时受到平衡力的作用;③汽车拐弯时司机通过转动方向盘来改变汽车的运动状态;④汽车行驶时尾部的空气流速越快、压强越大;⑤用力踩刹车是用增大压力的方法来减小摩擦A .①②B .②③C .③④D .④⑤7.如图4所示的容器中盛有一定质量的水,若将它倒置,则水对容器底部的压力和压强变化情况是 A .压力减小,压强增大 B .压力增大,压强减小C .压力和压强都增大D .压力和压强都减小A.剪刀 B.起子 C.镊子 D.钢丝钳 (图1)(图3) A B C D8.如图5所示,一把太阳伞固定在地面上,一阵大风吹来,伞面被“吸”,严重变形。
下列有关这一现象及其解释,正确的是A .伞面被向上“吸”,伞上方的空气流速大于下方B .伞面被向下“吸’’,伞上方的空气流速大于下方C .伞面被向上“吸”,伞上方的空气流速小于下方D .伞面被向下“吸”,伞上方的空气流速小于下方二、填空题(每小题3分,共24分。
2023-2024学年九年级学期开学摸底考试卷(原卷版)A4
20232024学年九年级学期开学摸底考试卷科学(考试时间:120分钟试卷满分:160分)考试需知:1、本试卷分第Ⅰ卷(选择题)和第Ⅰ卷(非选择题)两部分。
答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。
2、回答第Ⅰ卷时,选出每小题答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑。
如需改动,用橡皮擦干净后,再选涂其他答案标号。
写在本试卷上无效。
3、回答第Ⅰ卷时,将答案写在答题卡上。
写在本试卷上无效。
4、测试范围:九上全册。
5、考试结束后,将本试卷和答题卡一并交回。
第Ⅰ卷一、选择题:(本大题共20小题,每小题3分,共60分。
每小题只有一个正确选项)。
1、正确规范的操作是实验成功和人身安全的重要保证,下列实验操作正确的是()2、化学变化的结果是有“新物质”生成。
如果把反应物看成是“旧物质”,下列对“新物质”和“旧物质”的理解,正确的是()A.新物质是指世界上没有的物质B.新物质不会再变成其他物质C.新物质和旧物质的性质及用途不可能完全相同D.新物质的元素组成与旧物质的元素组成肯定不同3、人体的结构与功能高度统一,使得体内复杂多变的生理功能得以实现,下列叙述错误的是()A.左心室壁最厚,心肌发达,可以将血液“泵”到全身各处B.肺泡壁和毛细血管壁都由一层上皮细胞构成,利于肺泡与血液进行气体交换C.心房与心室之间、心室与动脉之间、各静脉内都有瓣膜,保证血液不能倒流D.小肠内表面有许多环形皱襞和小肠绒毛,增加了消化和吸收的面积4、下列物质的变化中,只有加酸才能一步实现的是()A.CaCO3→CO2B.Zn→ZnSO4C.CuO→CuCl2D.KOH→KCl5、下列选项中不属于合金的是()A. 钢B. 生铁C. 硬铝D. 铝6、2022年11月29日23时,搭载神舟十五号载人飞船的长征二号F遥十五运载火箭在酒泉卫星发射中心成功发射,火箭所用燃料是偏二甲肼与四氧化二氮。
随着我国科技的进步,未来我国的运载火箭将可以使用国产液态氢作为燃料。