模拟考试卷
高三数学模拟考试卷(附答案解析)

高三数学模拟考试卷(附答案解析)一、单选题(本大题共4小题,共20分。
在每小题列出的选项中,选出符合题目的一项)1.已知p:sinx=siny,q:x=y,则p是q的()A. 充分不必要条件B. 必要不充分条件C. 充要条件D. 既不充分又不必要条件2.已知双曲线x2a2−y2b2=1(a>0,b>0)的离心率为2,则此双曲线的渐近线方程为()A. y=±3xB. y=±2xC. y=±2xD. y=±x3.函数y=f(x)是定义域为R的奇函数,且对于任意的x1≠x2,都有f(x1)−f(x2)x1−x2<1成立.如果f(m)>m,则实数m的取值集合是()A. {0}B. {m|m>0}C. {m|m<0}D. R4.已知数列{an}满足a1+a2+⋯+an=n(n+3),n∈N*,则an=()A. 2nB. 2n+2C. n+3D. 3n+1二、填空题(本大题共12小题,共54分)5.不等式|2x+1|+|x−1|<2的解集为______.6.函数f(x)=x+9x(x>0)的值域为______.7.函数f(x)=sinx+cosx(x∈R)的最小正周期为______.8.若an为(1+x)n的二项展开式中x2项的系数,则n→+∞lim ann2=______.9.在所有由1,2,3,4,5这五个数字组成的无重复数字的五位数中,任取一个数,则取出的数是奇数的概率为______.10.若实数x,y满足x+y≤4y≤3xy≥0,则2x+3y的取值范围是______.11.已知向量a,b满足|a|=2,|b|=1,|a+b|=3,则|a−b|=______.12.已知椭圆C:x29+y2b2=1(b>0)的左、右两个焦点分别为F1、F2,过F2的直线交椭圆C于A,B两点.若△F1AB是等边三角形,则b的值等于______.13.已知等比数列{an}的前n项和为Sn,公比q>1,且a2+1为a1与a3的等差中项,S3=14.若数列{bn}满足bn=log2an,其前n项和为Tn,则Tn=______.14.已知A,B,C是△ABC的内角,若(sinA+i⋅cosA)(sinB+i⋅cosB)=12+32i,其中i为虚数单位,则C 等于______.15.设a∈R,k∈R,三条直线l1:ax−y−2a+5=0,l2:x+ay−3a−4=0,l3:y=kx,则l1与l2的交点M到l3的距离的最大值为.16.设函数f(x)=x2−1,x≥a|x−a−1|+a,x<a,若函数f(x)存在最小值,则a的取值范围为______.三、解答题(本大题共5小题,共76分。
2023-2024八年级物理期末模拟卷01(考试版A4)(人教版)

2023-2024学年八年级物理上学期期末模拟考试卷01(人教版)(考试版A4)(考试时间:90分钟试卷满分:100分)注意事项:1.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.答题时,将答案写在答题卡上。
写在本试卷上无效。
4.测试范围:人教版八年级上册。
5.考试结束后,将本试卷和答题卡一并交回。
一、选择题(12个小题,1-10题是单选题,每题2分。
11-12是多选题,每题3分,选对少选得2分,选错不得分。
共26分)1. 下列数据最接近实际情况的是()。
A. 适宜洗澡的水温约为60℃B. 一瓶矿泉水的质量约为50gC. 人心脏正常跳动一次的时间约为5sD. 初中生所坐凳子的高度约为40cm2.关于错误和误差,下列说法中正确的是()。
A.错误是不可避免的;B.通过多次测量取平均值可以减小误差;C.误差是由不规范的操作造成的;D.错误是由于测量工具不够精密造成的3.如图所示,用悬挂着的乒乓球接触正在发声的音叉,乒乓球会多次被弹开。
这个实验是探究()。
A.响度是否与振幅有关B.音调是否与频率有关C.声音的传播是否需要介质D.声音产生的原因4.关于声现象的描述,下列说法正确的是()。
A.禁鸣喇叭是在传播过程中减弱噪声;B.将发声的音叉触及面颊可以探究声音产生的原因;C.“闻其声而知其人”主要是根据声音的响度来判断的;D.超声波能粉碎人体内的“结石”说明声波可以传递信息5.下列各图所举的事例中,利用了相对运动原理的是()。
A.联合收割机和运输车 B.歼﹣10空中加油C.大飞机风洞实验 D.接力赛交接棒6.甲、乙两名同学进行百米赛跑,把他俩的运动近似看作匀速直线运动。
他俩同时从起跑线起跑,经过一段时间后,他们的位置如图所示。
则关于他俩在这段时间内运动的路程s、速度v和时间t,下列的关系图象中正确的是()。
中考英语模拟考试卷(附带答案)

中考英语模拟考试卷(附带答案)选择题部分共90分I.听力测试(30分)A)听录音,在每组句子中选出一个你所听到的句子。
每个句子听一遍。
1.A.This is my sister. B.Lily can play the guitar. C.I’d like some noodles.2.A.Do you have a baseball? B.Are you a soccer player? C.Is there a post office?3.A.Have a good time. B.Don’t run in the classroom. C.Glad to see you.4.A.Tara can’t play the guitar. B.Sam isn’t taller than Tom. C.It doesn’t matter.5.A.How’s it going? B.Why do you like pandas? C.What does he look like?B)在录音中,你将听到五段对话,每段对话后有一个小题,从每小题A、B、C中选出能回答所给问题的正确答案。
每段对话听两遍。
6.When is Bill’s birthday?A.On Friday.B.Next Sunday.C.On Monday.7.Where’s the park?A.In front of the school.B.Near the hospital.C.Across from the bank.8.How does Jane go to school every day?A.By bike.B.By bus.C.On foot.9.How often does Mary have a swing dance class?A.Once a week.B.Twice a month.C.Hardly ever.10.How long has Amy had the toy monkey?A.For two years.B.For five years.C.For three years.C)在录音中,你将听到一段对话,对话后有五个小题,从每小题A、B、C中选出能回答所给问题的正确答案。
小学四年级上学期数学人教版期中模拟卷考试试卷及答案解析

四年级上学期期中模拟卷·数学测试时间:90分钟满分:100分题号-二三四五总分得分一、选择。
(每题2分,共16分)1.由5个百万、2个十万、7个万和9个百组成的数是()。
A.5279000B.5270900C.5002070000D.5279002.过一点可以画()条直线,过两点可以画()条直线。
A.1;1B.1;无数C.无数;1D.无数;无数3.学校准备新建一个足球场,下面是四块地的面积,选面积为()的地比较合适。
A.100平方分米B.100平方米C.1公顷D.1平方千米4.小猿超市平均每天售出580瓶矿泉水,12天一共售出多少瓶矿泉水?竖式中箭头所指的数表示的实际意义是()。
A.1天售出58瓶矿泉水B.10天售出580瓶矿泉水C.10天售出5800瓶矿泉水D.12天售出580瓶矿泉水5.把一个平角分成两个角,这两个角可能是()。
A.一个锐角和一个直角B.两个锐角C.一个锐角和一个钝角D.两个钝角6.下面各选项的数量关系中,可以用“单价×数量=总价”表示的是()。
A.每盒装20个×10盒=200个B.每件200元×3倍=每件600元C.每个10元×15个=150元D.每人花了200元×2人=花了400元7.如果a×b=54000,要使积变成540,下面方法正确的是()。
A.a乘10,b除以10B.a乘10,b乘10C.a除以10,b除以10D.a除以10,b乘108.将一张圆形纸片对折3次后展开,任意两条折痕所夹的角不可能是()。
A.45°B.60°C.90°D.135°1.400570800是()位数,最高位是()位,其中“4”表示()个(),“5”表示()个()。
2.国家反诈中心APP是防诈反诈的“防火墙”,下载之后可以有效控制诈骗情况。
数据显示,该软件2022年的下载用户约为564380000人,每日活跃用户达到五百六十万人。
(广东深圳卷)2023年中考地理第一次模拟考试(全解全析)

2023年中考第一次模拟考试卷(广东深圳卷)全解全析【答案】1.D 2.B【解析】1.根据经纬线的指示方向来判断,经线指示南北方向,纬线指示东西方向。
贝加尔湖大致与银川在同一经线上,贝加尔湖纬度高,故在银川的北方,排除ABC,故选D。
2.由图可知,①段从3月上旬至5月初,用时50天左右,②段从3月上旬至5月下旬,用时70天,③段用时约1个月,30天,④段用时约1个月,30天。
用时最长的是②,排除ACD,故选B。
【点睛】经纬线的指示方向来判断,经线指示南北方向,纬线指示东西方向。
有指向标的地图,指向标所致的方向为北方。
【答案】3.D 4.C【解析】3.读图分析:甲地海拔600m,乙地海拔200m,两地相对高度是400m,A错误;丙处是山谷,丁处是山脊,B错误;图中等高距是200m,那么山顶的高度是800m--1000m之间,C错误;图中比例尺图上一厘米表示500米,D正确。
故选:D。
4.该图有指向标,指向标指向北方,故河流由北向南流。
故选:C。
【点睛】在等高线地形图上,等高线闭合且等高线数值中间高四周低则为山顶;两山顶之间相对低洼的部位为鞍部;等高线闭合且等高线数值中间低四周高则为盆地;等高线向海拔低处凸为山脊;等高线向海拔高处凸为山谷;几条海拔不同的等高线重合处为陡崖。
等高线密集表示坡陡,等高线稀疏表示坡缓。
【答案】5.D 6.B 7.A【解析】5.东西经度的判定方法为:经度度数向东变大为东经,经度度数向西变大为西经;南北纬度的判定:纬度度数向北变大为北纬,纬度度数向南变大为南纬。
据图中的经纬度可得,该大洲位于北半球和西半球,该大洲是北美洲,西临太平洋,东临大西洋,D正确。
亚洲、非洲和大洋洲位于东半球,ABC错误。
故选D。
6.人们通常把陆地地形分为平原、高原、山地、丘陵和盆地五种基本类型。
丘陵海拔较低,地面有起伏,坡度和缓,相对高度一般不超过200米;平原海拔较低,一般在200米以下,地面平坦辽阔;山地海拔较高,一般在500米以上,坡度陡峻,沟谷较深;高原海拔较高,一般在500米以上,地面坦荡,边缘比较陡峻;盆地四周高中间低。
中考物理模拟考试卷(附带答案)

中考物理模拟考试卷(附带答案)第Ⅰ卷(选择题共30分)一、本大题包括10小题,每小题3分,共30分。
在每小题给出的四个选项中,只有一项符合题目要求。
1.下列数据符合实际情况的是()A.一名中学生站立时对水平地面的压强约为2×103PaB.高原地区水沸腾时的温度约110℃C.一节新干电池的电压是1.5VD.中学生正常步行的速度可达到10m/s2.关于声现象,下列说法正确的是( )A.女高音和男低音中的“高”“低”都是指声音的音调B.常温(15 ℃)下,声音在真空中的传播速度最快C.放鞭炮时,用手捂住耳朵,是在阻断噪声传播D.人们利用次声波的反射制成声呐,可用来确定潜艇的位置3.如图所示的现象中,属于光的直线传播的是A. 折断的钢笔B. 汽车后视镜C. 手影D. 海市蜃楼4. 如图所示,滑滑梯是我们儿时喜欢的游戏。
下列对小明滑滑梯过程分析正确的是( )A.下滑过程中,小明相对地面是静止的B.下滑过程中,小明的动能转化为重力势能C.小明躺着比坐着下滑受力面积大,减小了摩擦力D.下滑过程中,如果所有的力突然全部消失,小明将做匀速直线运动5.在“强军改革,科技兴军”的思想指引下,我国军队的武器装备建设取得了巨大进步。
下列描述正确的是( )A.国产001A型航空母舰航行时所受的浮力大于重力B.国产歼20战机机翼是利用空气流速越大的位置压强越小的原理获得升力C.国产99式主战坦克安装宽大的履带是为了减小坦克对地面的压力D.国产094A型潜水艇水舱充水时,潜水艇会逐渐浮出水面6.甲、乙是两段由同种材料制成的实心柱状金属导体,其电阻相等,其中甲导体的横截面积大于乙导体。
将它们串联在电路中,通电一段时间,下列说法正确的是(忽略温度对导体电阻的影响,不考虑金属导体与周围空气的热传递)( )A.甲导体的长度比乙导体要短B.通电一段时间后,甲导体产生的热量要少C.通电一段时间后,乙导体升高的温度高D.甲导体两端的电压比乙导体两端的电压大7.东营市中小学创新展示活动中,丹丹同学发明了“发电地板”并放在入口处,让入场的观众都为现场提供能量。
六年级模拟数学考试卷答案

一、选择题(每题2分,共20分)1. 下列各数中,最小的整数是()A. -3B. -2C. -1D. 0答案:A2. 下列各式中,正确的是()A. 2 + 3 = 5B. 2 × 3 = 5C. 2 ÷ 3 = 5D. 2 - 3 = 5答案:A3. 下列各数中,质数是()A. 10B. 12C. 13D. 15答案:C4. 下列各数中,能被3整除的数是()A. 12B. 15C. 18答案:C5. 下列各式中,等式成立的是()A. 2 + 3 = 5B. 2 × 3 = 6C. 2 ÷ 3 = 1D. 2 - 3 = -1答案:B6. 下列各数中,最大的小数是()A. 0.5B. 0.6C. 0.7D. 0.8答案:D7. 下列各数中,最大的分数是()A. 1/2B. 1/3C. 1/4D. 1/5答案:A8. 下列各数中,最小的分数是()A. 1/2B. 1/3D. 1/5答案:D9. 下列各数中,最大的百分数是()A. 50%B. 60%C. 70%D. 80%答案:D10. 下列各数中,最小的百分数是()A. 50%B. 60%C. 70%D. 80%答案:A二、填空题(每题2分,共20分)11. 5 × 4 = _______答案:2012. 8 ÷ 2 = _______答案:413. 7 + 3 = _______答案:1014. 9 - 4 = _______15. 2 × 6 = _______答案:1216. 15 ÷ 3 = _______答案:517. 8 + 2 = _______答案:1018. 6 - 3 = _______答案:319. 3 × 7 = _______答案:2120. 12 ÷ 4 = _______答案:3三、解答题(每题10分,共30分)21. 简化下列各数:(1)4 × 5 × 2(2)3 × 3 × 2 × 2(3)2 × 2 × 2 × 3 × 3答案:(1)4 × 5 × 2 = 40(2)3 × 3 × 2 × 2 = 36(3)2 × 2 × 2 × 3 × 3 = 72 22. 计算下列各式的值:(1)7 × 8+ 5 × 6(2)3 × 4 + 2 × 5 - 6 × 2答案:(1)7 × 8 + 5 × 6 = 56 + 30 = 86(2)3 × 4 + 2 × 5 - 6 × 2 = 12 + 10 - 12 = 10 23. 解下列方程:(1)2x + 3 = 11(2)5x - 2 = 17答案:(1)2x + 3 = 112x = 11 - 32x = 8x = 4(2)5x - 2 = 175x = 17 + 25x = 19x = 19 ÷ 5x = 3.8。
优质金卷:浙江省杭州市学军中学2024届高三5月模拟考试数学试题(答题卡)

第 1 页浙江省杭州市学军中学2024年5月高三模拟考试考卷答题卡姓名:______________班级:______________ 一、选择题(请用2B 铅笔填涂) 1、[ A ] [ B ] [ C ] [ D ] 2、[ A ] [ B ] [ C ] [ D ] 3、[ A ] [ B ] [ C ] [ D ] 4、[ A ] [ B ] [ C ] [ D ]5、[ A ] [ B ] [ C ] [ D ]6、[ A ] [ B ] [ C ] [ D ]7、[ A ] [ B ] [ C ] [ D ]8、[ A ] [ B ] [ C ] [ D ]9、[ A ] [ B ] [ C ] [ D ] 10、[ A ] [ B ] [ C ] [ D ] 二、填空题(请在横线上作答)11、 , ; 12、 , ;13、 , ; 14、 , ;15、 ; 16、 ;17、 . 三、解答题(请在指定区域内作答)18、缺考标记 考生禁止填涂缺考标记!只能由监考老师负责用黑色字迹的签字笔填涂。
留意事项1、答题前,考生先将自己的姓名、准考证号码填写清晰。
2、请将准考证条码粘贴在右侧的[条码粘贴处]的方框内3、选择题必需运用2B 铅笔填涂;非选择题必需用0.5毫米黑色字迹的签字笔填写,字体工整 4、请按题号依次在各题的答题区内作答,超出范围的答案无效,在草纸、试卷上作答无效。
5、保持卡面清洁,不要折叠、不要弄破、弄皱,不准运用涂改液、刮纸刀。
6、填涂样例 正确 [■] 错误 [--][√] [×]19、20、第 3 页22.第 5 页。
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`2012年成人高考模拟考试卷 英语试卷 本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。
考试时间12分钟。
第Ⅰ卷 注意事项:1.答第Ⅰ卷前,考生务必将自己的姓名,准考证号、考试科目、试卷类型用铅笔涂在答题卡上。
2.每小题选出答案后,用铅笔把答题卡上对应题目的答案标号涂黑。
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一、语音知识(共5小题;每题1.5分,共7.5分) 在下列每组单词中,有一个单词的划线部分与其他单词的划线部分的读音不同。
找出这个词。
( )1. A. song B. wrong C. among D. along ( )2. A. starve B. towards C. warn D. warm ( )3. A. expert B. exhibition C. exercise D. exist ( )4. A. cook B. book C. took D. food ( )5. A. courage B. operate C. palace D. orange 二、词汇与语法知识(共15小题;每题1.5分,共22.5分。
) 从每小题的四个选择项中,选出最佳的一项。
( )6. Some traditional Chinese medicine is highly against cancer. A. valuable B. useful C. effective D. practical ( )7. Ah,here is the thing you are . A. looking at B. looking for C. takeing care of D. needed ( )8. On Sunday I always prefer tather than TV all day. A. to read; watch B. read; to watch C. reading; watch D. reading; to watch ( )9. ---The sea is very rough today. ---Yes,I ’ve never seen before. A. such rough sea B. such a rough sea C. so rough sea D. that rough sea ( )10. You can cut it a knife. A. by B. use C. with D. using of( )11. Hellen made to visit her parents once a month,but she didn ’t keep it.A. an offerB. a decision`班级:姓名:------------------装-------------------订--------------------线----------- -------内--------------------不-------------------得------------------答-------------------题-----------------C. an effortD. a promise()12. ---What did you think of her speech?---She for one hour but didn’t much.A. spoke; speakB. spoke; sayC. said; speakD. said; say()13. You may not go out your work is done.A. beforeB. untilC. whereD. as()14. Out ,with a stick in his hand.A. did he rushB. rushed heC. he rushedD. he did rush()15. The town is about ride from here.You ought to start right away.A. two hourB. two hour’sC. two hours’D. two-hours()16. Time flies!A. WhatB. HowC. WhichD. That()17.Since the road is wet this morning,last night .A. it must be rainingB. it must rainC. it must have rainedD. it must have been rained()18. The stone was so heavy that it was difficult for the old man to it.A. liftB. reachC. riseD. touch()19. This machine does not run as as that one.A. smoothlyB. more smoothlyC. most smoothlyD. same smoothly()20. ---Hello,may I speak to Dr.Bush?--- ?A. Yes, I’m BushB. Yes,it’s meC. Here is BushD. Speaking三、完形填空(共15小题;每题2分,共30分。
)通读下面的短文,掌握其大意,然后从每小题的四个选择项中选出可填入相应空白处的最佳选项。
Enough sleep is important to health.The amount of sleep 21 depends on the age of the person and the conditions in which sleep 22 .The young may need more sleep than the old,but 23 eight hours are enough for the health of grown-ups.Some can do with less than this amount but 24 may need more.Every person knows his own need. It is then a matter of how to 25 it.Sleep should be always enough to make one relaxed(松弛) and ready for26 work.Fresh air is 27 to sound sleep(酣睡). It is not 28 reason for some people to insist thatit is practical to sleep in the open air. 29 A person can keep himself warm,out-of-door sleeping probably gives the body 30 complete relaxation.Ability to sleep is largely a habit. The conditions referred to only lead to sleep.Out-of-door31 ,a good habit of regular drinking and the avoidance of late eating and 32 are all helpful to sound sleep.Such factors are largely within the 33 of any person.A bath at 34 ,neither hot nor cold but of body temperature,may be helpful to sleep.Sleeping pills should never be taken except when suggested by 35 .()21. A. wished B. exoected C. needed D. wanted()22. A. falls down B. breaks out C. wakes up D. takes place()23. A. seldom B. sometimes C. always D. generally()24. A. children B. women C. others D. few()25. A. help B. satisfy C. demand D. take()26. A. hard B. his own C. a day’s D. good()27. A. necessary B. able C. no good D. best()28. A. the best B. at all C. without D. a good()29. A. As B. Where C. Unless D. When()30. A. a strong B. a most C. a bad D. an exciting()31. A. walks B. exercises C. trips D. housework()32. A. worry B. fear C. carelessness D. hard work()33. A. fight B. plan C. control D. thought()34. A. any time B. bed time C. midnight D. lunch time()35. A. the sleeper B. a doctor C. a child D. parents四、阅读理解(共15小题;每题3分,共45分。
)阅读下列短文,然后根据短文的内容从每小题的四个选择项中选出最佳的一项。
ABen Carson, a doctor at Johns Hopkins Children’s Center,talk about how he grew up in a poor Detroit neighborhood, where peer(同龄人)pressure almost controlled his behavior and even his clothes.He wanted so badly to be considered cool that he begged his mother to buy him an expensive Italian shirt.“My mother made me a deal,”Carson remembers.”She said,’I’ll give you all the money I make next week.You’ll be in charge of the family finances-buying food and other necessities and paying the bills.Whatever you have left over you can spend on whatever you want.’”“I thought,this is going to be great,”Carson says.”I bought things we needed most and then began going through the bills.Of course I ran completely out of money long before everything was paid.”“Then I realized my mother,with her third-grade education,was’a financial genius(理财能手)—just to keep food on our table and clothes on our backs with such a small sum of money.I’d been a fool. I wanted her to buy me a $75 shirt when she only took home $100 a week,cleaning other people’s floors and washing their toilets.I took a hard look at my behavior and wondered why I could be so selfish.”“I started studying again.My grades went back up to As. Some of my peers laughed at me because I did not follow their pattern. But I refused to let that trouble me,because I had goal.”The experience had a lasting effect.”I not only saw and felt the difference my mother made in my life,I am living out(实现)that difference as a man.”( )36. By saying”My mother made me a deal”,Ben Carson meant that his mother .A. refused to buy him the shirtB. made an agreement with himC. asked him to deal with the problemD. showed him how to save money( )37. Ben Carson started studying hard again and rose back to the top because .A. he had got his shirt anywayB. he got his mother as his teacherC. he wanted to be a financial geniusD. he had a better goal to run after( )38. Ben Carson’s story tells us that .A. a boy should not learn from his peersB. he didn’t understand his mother as a boyC. what his mother taught him has changed his lifeD. people with little education may become a geniusBIn the eighteenth century,cities became larger and larger. People moved from the countryside and small towns to the cities because there was more work for them to do in the cities.On Sundays and holidays,they liked to leave the cities and have a good time in the countryside.But not every family had a horse or a wagon(马车).People needed a simpler means of transportation(交通工具).Inventors in many countries tried to solve this problem.The first bicycle,which was very simple,appeared in 1790.People called it “ the horse on wheel”.Then in 1861,after many improvements being made,the bicycle became a practical means of transportation.People liked bikes because they weren’t as expensive as horses and didn’t need to be fed.They could go anywhere and were easy to ride.Today bicycles are everywhere.( )39. The first bicycle appeared in the century.A. seventeenthB. eighteenthC. nineteenthD. sixteenth( )40. Two hundred years ago people moved to cities .A. to build special housesB. to ride bicyclesC. to find jobsD. to hae a good time( )41. People went back to the countryside when they were on .A. holidaysB. bicyclesC. horsesD. wagons( )42. Bicycle became a practical means of transportation many improvements were made.A. beforeB. whenC. as soon asD. afterCEdmund halley was an English scientist who lived over 200 years ago. He studied the observations of comets(彗星),which other scientists had made.Calculating the orbit(轨道)of one particular comet was a very difficule mathematical problem.He could not figure it out.Neither could other scientists who dealt with such problems.However,Halley had a friend named Newton,who was a brilliant mathematician.Newton thought he had already worked out that problem,but he could not find the papers on which he had done it.He told Halley that the orbit of a comet had the shape of an ellipse(椭圆形).Now Halley set to work.He figured out the orbits of some of the comets that had been observed by scientists.He made a surprising discovery.The comets that appeared in the years 1531,1607,and 1682 all had the same orbit.Yet their appearances had been 75 to 76 years apart.This seemed very strange to Halley.Three different comets followed the same orbit.The more Halley thought about it,the more he thought that there had not been three different comets,as people thought,He decided that they had simply seen the same comet three times.The comet had gone away and had come back again.It was an astonishing idea! Halley felt certain enough to make a prediction of what would happen in the future.He decided that this comet would appear in the year 1758 .There were 53 years to go before Halley’s prediction could be tested.In 1758 the comet appeared in the sky.Halley did not see it,for he had died some years before. Ever since then that comet had been called Halley’s comet,in his honour.( )43. Edmund Halley figured out the orbit of .A. some different comets appearing several timesB. the same comet appearing at different timeC. three different comets appearing three timesD. several comets appearing at the same time( )44. Halley made his discovery .A. by doing experimentsB. by means of his own careful observationC. by using the work of other scientistsD. by chance( )45. Halley made a surprising,but correct prediction in the year .A. 1704B. 1705C. 1706D. 1707( )46. This passage in general is about .A. Halley and other scientistsB. the orbit of a cometC. Newton and HalleyD. Halley and his discoveryDSome villagers were going to celebrate an important wine festival(酒宴)in a few day’s time,so theyborrowed a huge barrel from the nearest town,put it in the village square,and decided that each of them should empty a bottle of the best wine he had into it,so that there should be plenty at the feast(宴会).One of the villagers thought he would be very clever.”If I pour a bottle of water in, instead of wine,no one will notice it,”he said to himself,”because there will be so much excellent wine in the barrel that the water will be lost in it.”The night of the feast arrived.Everybody gathered in the village square with their bowls and their glasses for the wine. The tap (塞子)on the barrel was opened,but what came out was pure water. Everyone in the village had the same idea.( )47. The villagers borrowed a huge barrel in order to .A. hold waterB. hold wineC. take the place of wine bottleD. empty bottles( )48. From the passage we know that the feast would be held .A. in the village squareB. in the nearest townC. around the barrelD. in their houses( )49. One of the villagers poured a bottle of water into the barrel because .A. the wine in the barrel was too thickB. the others put water into it tooC. he was cleverer than the othersD. he tried to cheat the others( )50. The underlined sentence “the water will be lost in it” can be considered as .A. the water would be gone in the barrelB. the water couldn’t be found in the wineC. the water would flow through the barrel into the groundD. the water would be mixed up with the wine第Ⅱ卷注意事项:1. 用钢笔或圆珠笔答在....。