2019中考慈溪中学保送生重点考试及解析.doc
宁波市2019年科学普通高中保送生招生综合素质测试试卷解析版

宁波市2019年科学普通高中保送生招生综合素质测试试卷解析版一、选择题1.下列有关生活、地理等的说法中正确的是()A.某洗衣粉含有蛋白酶,能高效分解油污B.宇宙微波背景辐射是宇宙起源于热大爆炸的有力证据C.使用农家肥作肥料,其能量可以流向植物,实现了对能量的多级利用D.月食发生在农历初一,那时太阳、地球、月球恰好或几乎在一条直线上【答案】B【解析】【考点】日食和月食的成因,大爆炸宇宙论,能量流动和物质循环,酶及其催化作用【分析】(1)酶被称为生物催化剂,它的催化具有专一性、高效性,受温度、PH值影响等特点。
(2)1946 年,伽莫夫与他的两个学生—拉尔夫·阿尔菲和罗伯特·赫尔曼一道,首次将相对论和化学元素生成理论引入宇宙学,提出了热大爆炸宇宙学模型。
伽莫夫认为:宇宙最初开始于高温高密度的原始物质,温度超过几十亿度,那时的宇宙中充满的是辐射和基本粒子;随着宇宙膨胀,温度逐渐下降,物质逐渐凝聚成星云,再演化成今天的各种天体。
(3)生态系统中,物质是循环的,能量流动是单向的、逐级减少的(4)当月球运行到地球与太阳之间,月球遮住了太阳的一部分时,出现日偏食;月球只遮住了太阳的中心部分、在太阳周围还露出一圈日面时,出现日环食;太阳完全被遮住时,出现日全食。
【解答】A.酶的催化具有专一性,某洗衣粉含有蛋白酶,只能催化分解蛋白质类物质,而油污的主要成分是脂肪类物质,所以不能高效分解油污,说法错误。
B.宇宙微波背景辐射是宇宙起源于热大爆炸的有力证据,故说法正确。
C.使用农家肥作肥料,其物质成为植物的组成部分,植物中存储的能量来至于光合作用所固定的太阳能,故所法错误。
D.月食发生在农历十五,那时太阳、地球、月球恰好或几乎在一条直线上,月球运行到地球与太阳之间,月球遮住了太阳的一部分或全部而形成的,故说法错误。
故答案为:B2.下列说法正确的是()A.保持教室清洁与通风属于预防传染病中的保护易感人群B.解剖一朵花,观察其结构,在子房内看到的白色小颗粒是花药C.肺泡壁和毛细血管壁都由一层上皮细胞构成,有利于进行气体交换D.运动时骨骼肌产生热量增加,皮肤血管血流量增加,不利于散热【答案】C【解析】【考点】人体呼吸系统的结构和气体交换,体温的控制,花的结构,传染病的预防措施【分析】(1)传染病是由病原体引起的,能够在生物体之间传播的一种疾病,具有传染性和流行性等特点。
英语试题同步练习题考试题教案慈溪中学保送生英语试卷及答案

英语试题同步练习题考试题教案慈溪中学保送生英语试卷及答案一、教学目标:1. 让学生掌握慈溪中学保送生英语试卷的题型和难度,提高学生的应试能力。
2. 通过同步练习,巩固学生的英语基础知识,提高学生的综合运用能力。
3. 培养学生的团队合作精神,提高学生的学习兴趣和自信心。
二、教学内容:1. 慈溪中学保送生英语试卷及答案。
2. 试卷分析,包括题型、难度、考点等。
3. 同步练习题,涵盖各个知识点和题型。
三、教学过程:1. 课时安排:每章内容安排2课时。
2. 第一课时:讲解慈溪中学保送生英语试卷及答案,分析试卷的题型、难度、考点等,帮助学生了解考试要求。
3. 第二课时:根据试卷分析结果,设计同步练习题,让学生进行练习,巩固所学知识。
四、教学方法:1. 讲授法:讲解试卷和答案,传授解题技巧。
2. 练习法:设计同步练习题,让学生进行实际操作。
3. 小组讨论法:鼓励学生分组讨论,共同解决问题。
五、教学评价:1. 课后作业:布置同步练习题,检查学生的掌握情况。
2. 课堂表现:观察学生在课堂上的参与程度、提问回答等情况,评估学生的学习效果。
3. 定期考试:组织模拟考试,评估学生的应试能力。
教案示例:第一章:慈溪中学保送生英语试卷及答案解析1.1 试卷分析讲解试卷的题型、难度、考点等。
分析试卷的出题规律和趋势。
1.2 同步练习题根据试卷分析结果,设计同步练习题。
涵盖各个知识点和题型。
第二章:同步练习题解答与分析2.1 练习题解答讲解同步练习题的答案和解析。
分析解题思路和方法。
2.2 课堂讨论组织学生进行小组讨论,共同解决问题。
鼓励学生提出疑问和不同观点。
后续章节依此类推,根据教学目标和内容进行编写。
六、教学策略的调整与实施6.1 针对学生的学习情况,对教学策略进行调整,以满足不同学生的需求。
根据学生的反馈和考试成绩,分析学生的薄弱环节,针对性地进行讲解和辅导。
鼓励学生积极参与课堂活动,提高学生的学习兴趣和动力。
6.2 实施差异化教学针对不同学生的学习能力和水平,提供不同难度的同步练习题,以促进学生的个性化发展。
慈溪2019中考英语重点考试及解析

慈溪2019中考英语重点考试及解析考生须知:1.本试卷分试题卷Ⅰ、试题卷Ⅱ和答题卷。
全卷总分值110分,考试时间100分钟。
2.答题前,请先用钢笔将姓名、准考证号等信息分别填写在答题卷的规定位置上。
3.做试题卷Ⅰ时,把答题卷Ⅰ上对应题目的答案标号用2B铅笔涂黑、涂满,如需改动,用橡皮擦干净后再选涂其它答案;做试题卷Ⅱ时,用黑色墨水钢笔按照题号顺序在答题卷Ⅱ规定区域内作答;做在试题卷上或超出答题区域书写的答案无效。
试题卷ⅠⅠ、听小对话,选择图片〔共5小题;每题1分,总分值5分〕1.Whatarethetwospeakerstalkingabout?2.Howdoesthegirlgettoworkeveryday?3.Whendidthemanarriveforthemeeting?4.Wheredoestheconversationtakeplace?10.Whatarethetwospeakersgoingtodothisafternoon?Ⅱ、听小对话,回答以下问题〔共5小题;每题1分,总分值5分〕6.WhatdoestheboywantforChristmasthisyear?A.Abike.B.Avolleyball.C.Atoycar.7.WhoisleavingforHangzhou?A.Jack.B.Betty.C.Ted.8.WhathappenedtoVictorlastnight?A.Hemetsomeonestrange.B.Hegotonemilliondollars.C.Hehadastrangedream.9.Whydoesthewoman NOT liketheirflat?A.Becauseit’stooold.B.Becauseit’stoosmall.C.Becauseit’stoougly.10.WhatsportsisAmygoodat?A.Jumping.B.Running.C.Swimming.Ⅲ、听长对话,回答以下问题〔共5小题;每题1分,总分值5分〕听下面一段较长的对话,回答第11、12小题。
最新浙江省宁波市慈溪中学2019-2020年最新自主招生数学试卷(含答案)(已纠错)

2019届浙江省宁波市慈溪中学自主招生数学试卷一、选择题(共5小题,每题4分,满分20分)1.(4分)下列图中阴影部分面积与算式|﹣|+()2+2﹣1的结果相同的是()A.B.D.2.(4分)如图,∠ACB=60°,半径为2的⊙O切BC于点C,若将⊙O在CB上向右滚动,则当滚动到⊙O 与CA也相切时,圆心O移动的水平距离为()A.2πB.4πC.2D.43.(4分)如果多项式x2+px+12可以分解成两个一次因式的积,那么整数p的值可取多少个()A.4 B.5 C.6 D.84.(4分)小明、小林和小颖共解出100道数学题,每人都解出了其中的60道,如果将其中只有1人解出的题叫做难题,2人解出的题叫做中档题,3人都解出的题叫做容易题,那么难题比容易题多多少道()A.15 B.20 C.25 D.305.(4分)已知BD是△ABC的中线,AC=6,且∠ADB=45°,∠C=30°,则AB=()A.B.2C.3D.6二、填空题(共6题,每小题5分,满分30分)6.(5分)满足方程|x+2|+|x﹣3|=5的x的取值范围是.7.(5分)已知三个非负实数a,b,c满足:3a+2b+c=5和2a+b﹣3c=1,若m=3a+b﹣7c,则m的最小值为.8.(5分)如图所示,设M是△ABC的重心,过M的直线分别交边AB,AC于P,Q两点,且=m,=n,则+=.9.(5分)在平面直角坐标系中,横坐标与纵坐标都是整数的点(x,y)称为整点,如果将二次函数的图象与x轴所围成的封闭图形染成红色,则此红色区域内部及其边界上的整点个数有个.10.(5分)如图所示:在平面直角坐标系中,△OCB的外接圆与y轴交于A(0,),∠OCB=60°,∠COB=45°,则OC=.11.(5分)如图所示:两个同心圆,半径分别是和,矩形ABCD边AB,CD分别为两圆的弦,当矩形ABCD面积取最大值时,矩形ABCD的周长是.三、简答题(共4小题,满分50分)12.(12分)九年级(1)、(2)、(3)班各派4名代表参加射击比赛,每队每人打两枪,射中内环得50分,射中中环得35分,射中外环得25分,脱靶得0分.统计比赛结果,(1)班8枪全中,(2)班1枪脱靶,(3)班2枪脱靶,但三个班的积分完全相同,都是255分.请将三个班分别射中内环、中环、外环的次数填入下表并简要说明理由:班级内环中环外环(1)班(2)班(3)班13.(12分)设二次函数y=ax2+bx+c的开口向下,顶点落在第二象限.(1)确定a,b,b2﹣4ac的符号,简述理由.(2)若此二次函数图象经过原点,且顶点在直线x+y=0上,顶点与原点的距离为3,求抛物线的解析式.14.(12分)如图,四边形ABCD为圆内接四边形,对角线AC、BD交于点E,延长DA、CB交于点F,且∠CAD=60°,DC=DE.求证:(1)AB=AF;(2)A为△BEF的外心(即△BEF外接圆的圆心).15.(14分)在平面直角坐标中,边长为1的正方形OABC的两顶点A、C分别在y轴、x轴的正半轴上,点O在原点.现将正方形OABC绕O点顺时针旋转,当A点第一次落在直线y=x上时停止旋转.旋转过程中,AB边交直线y=x于点M,BC边交x轴于点N(如图1).(1)求边AB在旋转过程中所扫过的面积;(2)设△MBN的周长为p,在旋转正方形OABC的过程中,p值是否有变化?请证明你的结论;(3)设MN=m,当m为何值时△OMN的面积最小,最小值是多少?并直接写出此时△BMN内切圆的半径.2019届浙江省宁波市慈溪中学自主招生数学试卷参考答案与试题解析一、选择题(共5小题,每题4分,满分20分)1.(4分)下列图中阴影部分面积与算式|﹣|+()2+2﹣1的结果相同的是()A.B.D.【分析】先把算式的值求出,然后根据函数的性质分别求出四个图中的阴影部分面积,看是否与算式的值相同,如相同,则是要选的选项.【解答】解:原式=++==.A、作TE⊥X轴,TG⊥Y轴,易得,△GTF≌△ETD,故阴影部分面积为1×1=1;B、当x=1时,y=3,阴影部分面积1×3×=;C、当y=0时,x=±1,当x=0时,y=﹣1.阴影部分面积为[1﹣(﹣1)]×1×=1;D、阴影部分面积为xy=×2=1.故选B.【点评】解答A时运用了全等三角形的性质,B、C、D都运用了函数图象和坐标的关系,转化为三角形的面积公式来解答.2.(4分)如图,∠ACB=60°,半径为2的⊙O切BC于点C,若将⊙O在CB上向右滚动,则当滚动到⊙O 与CA也相切时,圆心O移动的水平距离为()A.2πB.4πC.2D.4【分析】连接O′C,O′B,O′D,OO′,则O′D⊥BC.因为O′D=O′B,O′C平分∠ACB,可得∠O′CB=∠ACB=×60°=30°,由勾股定理得BC=2.【解答】解:当滚动到⊙O′与CA也相切时,切点为D,连接O′C,O′B,O′D,OO′,∵O′D⊥AC,∴O′D=O′B.∵O′C平分∠ACB,∴∠O′CB=∠ACB=×60°=30°.∵O′C=2O′B=2×2=4,∴BC===2.故选:C.【点评】此题主要考查切线及角平分线的性质,勾股定理等知识点,属中等难度题.3.(4分)如果多项式x2+px+12可以分解成两个一次因式的积,那么整数p的值可取多少个()A.4 B.5 C.6 D.8【分析】先把12分成2个因数的积的形式,共有6总情况,所以对应的p值也有6种情况.【解答】解:设12可分成m•n,则p=m+n(m,n同号),∵m=±1,±2,±3,n=±12,±6,±4,∴p=±13,±8,±7,共6个值.故选C.【点评】主要考查了分解因式的定义,要熟知二次三项式的一般形式与分解因式之间的关系:x2+(m+n)x+mn=(x+m)(x+n),即常数项与一次项系数之间的等量关系.4.(4分)小明、小林和小颖共解出100道数学题,每人都解出了其中的60道,如果将其中只有1人解出的题叫做难题,2人解出的题叫做中档题,3人都解出的题叫做容易题,那么难题比容易题多多少道()A.15 B.20 C.25 D.30【分析】设容易题有x道,中档题有y道,难题有z道,然后根据题目数量和三人解答的题目数量列出方程组,然后根据系数的特点整理即可得解.【解答】解:设容易题有x道,中档题有y道,难题有z道,由题意得,,①×2﹣②得,z﹣x=20,所以,难题比容易题多20道.故选B.【点评】此类题注意运用方程的知识进行求解,观察系数的特点巧妙求解更简便.5.(4分)已知BD是△ABC的中线,AC=6,且∠ADB=45°,∠C=30°,则AB=()A.B.2C.3D.6【分析】根据题中所给的条件,在直角三角形中解题.根据角的正切值与三角形边的关系,结合勾股定理求解.【解答】解:过点B作BE⊥AC交AC于点E.如下图设BE=x,∵∠BDA=45°,∠C=30°,∴DE=x,BC=2x,∵tan∠C=,∴=tan30°,∴3x=(3+x),解得x=,在Rt△ABE中,AE=DE﹣AD=﹣3=,由勾股定理得:AB2=BE2+AE2,AB==3.故选C.【点评】本题考查了解直角三角形中三角函数的应用,要熟练掌握好边角之间的关系.二、填空题(共6题,每小题5分,满分30分)6.(5分)满足方程|x+2|+|x﹣3|=5的x的取值范围是﹣2≤x≤3.【分析】分别讨论①x≥3,②﹣2<x<3,③x≤﹣2,根据x的范围去掉绝对值,解出x,综合三种情况可得出x的最终范围.【解答】解:从三种情况考虑:第一种:当x≥3时,原方程就可化简为:x+2+x﹣3=5,解得:x=3;第二种:当﹣2<x<3时,原方程就可化简为:x+2﹣x+3=5,恒成立;第三种:当x≤﹣2时,原方程就可化简为:﹣x﹣2+3﹣x=5,解得:x=﹣2;所以x的取值范围是:﹣2≤x≤3.【点评】解一元一次方程,注意最后的解可以联合起来,难度很大.7.(5分)已知三个非负实数a,b,c满足:3a+2b+c=5和2a+b﹣3c=1,若m=3a+b﹣7c,则m的最小值为﹣.【分析】解方程组,用含m的式子表示出a,b,c的值,根据a≥0,b≥0,c≥0,求得m的取值范围而求得m 的最小值.【解答】解:由题意可得,解得a=﹣3,b=7﹣,c=,由于a,b,c是三个非负实数,∴a≥0,b≥0,c≥0,∴﹣≥m≥﹣.所以m最小值=﹣.故本题答案为:﹣.【点评】本题考查了三元一次方程组和一元一次不等式的解法.8.(5分)如图所示,设M是△ABC的重心,过M的直线分别交边AB,AC于P,Q两点,且=m,=n,则+=1.【分析】根据三角形的重心是三角形三条中线的交点,且重心到顶点的距离是它到对边中点的距离的2倍.可以分别过点B,C作BE∥AD,CF∥AD,交PQ于点E,F,根据平行线等分线段定理和梯形中位线定理可得到两个等式,代入所求代数式整理即可得到答案.【解答】解:分别过点B,C作BE∥AD,CF∥AD,交PQ于点E,F,则BE∥AD∥CF,∵点D是BC的中点,∴MD是梯形的中位线,∴BE+CF=2MD,∴+==+===1.【点评】此题考查了重心的概念和性质,能够熟练运用平行线分线段成比例定理、平行线等分线段定理以及梯形的中位线定理.9.(5分)在平面直角坐标系中,横坐标与纵坐标都是整数的点(x,y)称为整点,如果将二次函数的图象与x轴所围成的封闭图形染成红色,则此红色区域内部及其边界上的整点个数有25个.【分析】找到函数图象与x轴的交点,那么就找到了相应的x的整数值,代入函数求得y的值,那么就求得了y的范围.【解答】解:将该二次函数化简得,y=﹣[(x﹣4)2﹣],令y=0得,x=或.则在红色区域内部及其边界上的整点为(2,0),(3,0),(4,0),(5,0),(6,0),(2,1),(2,2),(3,1),(3,2),(3,3),(3,4),(3,5),(4,1),(4,2),(4,3),(4,4),(4,5),(4,6),(5,1),(5,2),(5,3),(5,4),(5,5),(6,1),(6,2)共25个,故答案为:25.【点评】本题涉及二次函数的图象性质,解决本题的关键是得到相对应的x的值.10.(5分)如图所示:在平面直角坐标系中,△OCB的外接圆与y轴交于A(0,),∠OCB=60°,∠COB=45°,则OC=1+.【分析】连接AB,由圆周角定理知AB必过圆心M,Rt△ABO中,易知∠BAO=∠OCB=60°,已知了OA=,即可求得OB的长;过B作BD⊥OC,通过解直角三角形即可求得OD、BD、CD的长,进而由OC=OD+CD求出OC的长.【解答】解:连接AB,则AB为⊙M的直径.Rt△ABO中,∠BAO=∠OCB=60°,∴OB=OA=×=.过B作BD⊥OC于D.Rt△OBD中,∠COB=45°,则OD=BD=OB=.Rt△BCD中,∠OCB=60°,则CD=BD=1.∴OC=CD+OD=1+.故答案为:1+.【点评】此题主要考查了圆周角定理及解直角三角形的综合应用能力,能够正确的构建出与已知和所求相关的直角三角形是解答此题的关键.11.(5分)如图所示:两个同心圆,半径分别是和,矩形ABCD边AB,CD分别为两圆的弦,当矩形ABCD面积取最大值时,矩形ABCD的周长是16+12.【分析】此题首先能够把问题转化到三角形中进行分析.根据锐角三角函数的概念可以证明三角形的面积等于相邻两边的乘积乘以夹角的正弦值,根据这一公式分析面积的最大值的情况.然后运用勾股定理以及直角三角形的斜边上的高等于两条直角边的乘积除以斜边求得长方形的长和宽,进一步求得其周长.【解答】解:连接OA,OD,作OP⊥AB于P,OM⊥AD于M,ON⊥CD于N.根据矩形的面积以及三角形的面积公式发现:矩形的面积是三角形AOD的面积的4倍.因为OA,OD的长是定值,则∠AOD的正弦值最大时,三角形的面积最大,即∠AOD=90°,则AD=6,根据三角形的面积公式求得OM=4,即AB=8.则矩形ABCD的周长是16+12.【点评】本题考查的是矩形的定理以及垂径的性质,考生应注意运用勾股定理来求得边长继而才能求出周长.三、简答题(共4小题,满分50分)12.(12分)九年级(1)、(2)、(3)班各派4名代表参加射击比赛,每队每人打两枪,射中内环得50分,射中中环得35分,射中外环得25分,脱靶得0分.统计比赛结果,(1)班8枪全中,(2)班1枪脱靶,(3)班2枪脱靶,但三个班的积分完全相同,都是255分.请将三个班分别射中内环、中环、外环的次数填入下表并简要说明理由:班级内环中环外环(1)班(2)班(3)班【分析】本题可以通过设出内环、中环、外环射中的枪数为x,y,z;设脱靶数为t,根据等量关系“总得分=内环得分+中环得分+外环得分”列出函数方程进行分析,从而确定出各中枪数.【解答】解:填表如下:班级内环中环外环(1)班 1 3 4(2)班 2 3 2(3)班 3 3 0理由如下:可设t枪脱靶,x枪射中内环,y枪射中中环,则有(8﹣x﹣y﹣t)枪射中外环,所以50x+35y+25(8﹣x﹣y﹣t)=255化简得y=5+2(t﹣x)+(1+t﹣x)对于(1)班,t=0,y=5﹣2x+(1﹣x),x为奇数,只能取x=1,得y=3;对于(2)班,t=1,y=7﹣2x+(2﹣x),x为偶数,只能取x=2,得y=3;对于(3)班,t=2,y=9﹣2x+(3﹣x),x为奇数,只能取x=3,得y=3;【点评】此题考查的是学生对函数方程的分析讨论并对某些值确定,同学们要注意细心分析.13.(12分)设二次函数y=ax2+bx+c的开口向下,顶点落在第二象限.(1)确定a,b,b2﹣4ac的符号,简述理由.(2)若此二次函数图象经过原点,且顶点在直线x+y=0上,顶点与原点的距离为3,求抛物线的解析式.【分析】(1)根据抛物线的开口向下判断a的符号,再根据第二象限点的坐标特点及二次函数的顶点坐标列出不等式组,确定出解答a,b,b2﹣4ac的符号即可.(2)根据抛物线过原点及顶点在直线x+y=0上求出其顶点坐标及一次项系数,再根据顶点与原点的距离为3求出二次项系数,进而求出其解析式.【解答】解:(1)∵抛物线开口向下,∴a<0;∵顶点在第二象限,∴,∴b<0,b2﹣4ac>0.(2)由题意可得c=0,此时顶点坐标为(﹣,﹣),因顶点在直线x+y=0上,所以﹣﹣=0,b=﹣2.此时顶点坐标为(,﹣),由+=18,a=﹣,则抛物线的解析式为y=﹣x2﹣2x.【点评】本题考查的是二次函数的图象与系数的关系及用待定系数法求二次函数的解析式,掌握二次函数的特点是解题的关键.14.(12分)如图,四边形ABCD为圆内接四边形,对角线AC、BD交于点E,延长DA、CB交于点F,且∠CAD=60°,DC=DE.求证:(1)AB=AF;(2)A为△BEF的外心(即△BEF外接圆的圆心).【分析】(1)根据圆内接四边形的性质和三角形的内角和定理进行证明;(2)根据三角形的外心到三角形的三个顶点的距离相等的性质只需证明AB=AF=AE,根据等腰三角形的性质和判定进行证明.【解答】证明:(1)∠ABF=∠ADC=120°﹣∠ACD=120°﹣∠DEC=120°﹣(60°+∠ADE)=60°﹣∠ADE,(4分)而∠F=60°﹣∠ACF,(6分)因为∠ACF=∠ADE,(7分)所以∠ABF=∠F,所以AB=AF.(8分)(2)四边形ABCD内接于圆,所以∠ABD=∠ACD,(10分)又DE=DC,所以∠DCE=∠DEC=∠AEB,(12分)所以∠ABD=∠AEB,所以AB=AE.(14分)∵AB=AF,∴AB=AF=AE,即A是三角形BEF的外心.(16分)【点评】综合运用了圆内接四边形的性质、三角形的内角和定理以及三角形的外心的性质.15.(14分)在平面直角坐标中,边长为1的正方形OABC的两顶点A、C分别在y轴、x轴的正半轴上,点O在原点.现将正方形OABC绕O点顺时针旋转,当A点第一次落在直线y=x上时停止旋转.旋转过程中,AB边交直线y=x于点M,BC边交x轴于点N(如图1).(1)求边AB在旋转过程中所扫过的面积;(2)设△MBN的周长为p,在旋转正方形OABC的过程中,p值是否有变化?请证明你的结论;(3)设MN=m,当m为何值时△OMN的面积最小,最小值是多少?并直接写出此时△BMN内切圆的半径.【分析】(1)S阴=S△OAB+S扇形OBB′﹣S△OAA′﹣S扇形OAA′,根据公式即可求解.(2)延长BA交y轴于E点,可以证明:△OAE≌△OCN,△OME≌△OMN证得:OE=ON,AE=CN,MN=ME=AM+AE=AM+CN.从而求得:P=MN+BN+BM=AM+CN+BN+BM=AB+BC=2.即可求解.(3)Rt△BMN中,BM2+BN2=MN2,所以(1﹣n)2+(1﹣m+n)2=m2⇒m2﹣mn+2﹣m=0.把这个方程看作关于n的方程,根据一元二次方程有解得条件,即可求得.【解答】解:(1)如图,S阴=S△OAB+S扇形OBB'﹣S△OA'B′﹣S扇形OAA'=S扇形OBB′﹣S扇形OAA′=π﹣π×12=(2)p值无变化证明:延长BA交y轴于E点,在△OAE与△OCN中,∴△OAE≌△OCN(AAS)∴OE=ON,AE=CN在△OME与△OMN中,∴△OME≌△OMN(SAS)∴MN=ME=AM+AE=AM+CN∴P=MN+BN+BM=AM+CN+BN+BM=AB+BC=2;(3)设AM=n,则BM=1﹣n,CN=m﹣n,BN=1﹣m+n,∵△OME≌△OMN,∴S△MON=S△MOE=OA×EM=m在Rt△BMN中,BM2+BN2=MN2∴(1﹣n)2+(1﹣m+n)2=m2⇒n2﹣mn+1﹣m=0∴△=m2﹣4(1﹣m)≥0⇒m≥2﹣2或m≤﹣2﹣2,∴当m=2﹣2时,△OMN的面积最小,为﹣1.此时n=﹣1,则BM=1﹣n=2﹣,BN=1﹣m+n=2﹣,∴Rt△BMN的内切圆半径为=3﹣2.【点评】本题综合运用了扇形的面积公式,全等三角形的判定,三角形的面积公式以及勾股定理的综合应用,难度较大.。
慈溪中学保送生招生考试(含答案).

慈溪中学保送生招生考试英语试题Ⅰ、单项选择(共15小题,计15分从A、B、C、D四个选项中,选出可以填人空白处的最佳答案。
1.--This is _________ film I’ve told you about several times.--It’s great. I’ve never seen _______ more moving one.A. a; aB. the; aC. the; theD. a; the2.-- Linda, the new term is coming. Do you think you need a new school bag? --Yes. I’m going to buy ________ this afternoon.A. oneB. thisC. itD. that3.--What does the radio say?--It says there _______ this afternoon.A. is rainyB. is going to rainC. is going to have rainD. is going to be rain4.The little boy will not go to sleep _________________.A. until his mother comes backB. when his mother is coming backC. before his mother will come backD. whether his mother comes back5.He couldn’t _________ an answer when I asked him w hy he was late.A. open upB. try outC. look overD. come up with6.Do you know _____________ in a hundred years?A. what life will be likeB. what will life be likeC. how life will be likeD. how will life be like7.--How often do you have history lessons?--__________, Monday, Wednesday and Friday.A. Every dayB. Every other dayC. Every three daysD. Every a few days8.--I called you at eight o’clock yesterday evening, but there was no answer. --Oh, I’m sorry. I __________ dinner at my friend’s.A. haveB. hadC. was havingD. have had9. --Is England one of the members of APEC?--_________. And neither is France.A. Let me seeB. Yes, it isC. I hope soD. Of course not10.Great changes ________ in Zhejiang since 1979.A. have been taken placeB. have taken placeC. had been taken placeD. were taken place11._________ the man looks at his son! He thinks his son is getting more and more__________.A. How angry; carelesslyB. What angry; carelesslyC. How angrily; carelessD.What angrily; careless12.Day by day, the UN officials _______ discussing about Iran issue. But they wonder what todo with it.A. are busy withB. are interested inC. are excited atD. are amazed at13.The TV set _______ has gone wrong.A. I bought it last weekB. which I bought it last weekC. what I bought last weekD. I bought last week14.Today the forests have almost gone. People must _______ down too many trees.A. stop from cuttingB. be stopped from cuttingC. stop to cutD. be stopped to cut15.--You teach me English and I teach you Chinese.--_________.A. The same to youB. That’s a dealC. It’s a pityD. So do IⅡ、完形填空(共15小题,计15分阅读下面短文,掌握其大意,然后从A、B、C、D四个选项中选出可以填入空白处的最佳答案。
浙江省宁波市2019年普通高中保送生英语考试试卷及参考答案

浙江省宁波市2019年普通高中保送生英语考试试卷一、完形填空(共15小题:每小题I分,满分15分)1. 阅读下面短文,掌握其大意,然后从A、B、C、D四个选项中选出最佳选项。
I lost my sight when I was four years oldby falling off a boxcar in a freight yard in Atlantic City,and1onmy head. Now,I am32. I can vaguely remember the brightness of sunshine andwhat color red is. It would be wonderful to see again But a disaste r can dostrange things to people.At the time,I was bewildered and afraid,butI was lucky. My parents and my teachers saw something in me,a potential,w hichI didn't see. And they made me want to fight it out with2The hardest3Ihad to learn was to believe in myself. That was basic. If I hadn't been able todo that,I would have collapse d and become a chair rocker for the rest of mylife. When I say believe in myself,I am not talking about 4 thekind of self-confide nce that helps me down an unfamiliar staircase alone. Thatis5ofit,but I mean something bigger than that:a confidence that I a m a real,6person;that somewhere there is a special place7I can make myself fit. It took me years todiscover and strengthen t his confidence. It had to8themost elementary things.I canstill remember once,when a man gave me an indoor baseball. I thought he waslaughing at me,and I was9"I can't use this," I said."Take it with you," he urged me "androll it around."The words10in my head:"Roll it around,roll it around" By rollingthe ball,I could11whereit went. This gave me an idea ho w to achieve a goal I had thought12:playing baseball.At Philadelphia's Overbrook School for theBlind,I invented a successful variation of baseball. We called it groundball.All my life. I have13ahead of me a series of goals,and then tried to reach them one at atime I would14sometimes anyw ay,but on the average,Imade progress.I believe in life now. I don't mean that Iwould prefer to go without my eyes. I simply mean that the loss of them made me more15what I had left.二、阅读理解(共15小题,每小题1分,满分15分)2. 阅读理解It's every parent's worst nightmare:there's a fire in the house the alarms are beeping,but the children aresleeping on. N ow scientists have found a better way to rouse slumberingyoungsters. Researchers in the US have discovered that playing a child arecording of his mother's voice is about three times more likely to wake him upthan a traditional alarm.Writing in the Journal of Pediatrics,Smithand colleagues report how they compared the effects of four different smokeal arms on 176 children aged between 5 and 12 years old,none of whom had hearingdifficulties or were taking any medication t hat affected their sleep. While onealarm featured a high pitched beeps he sort of commonly found in households theother thre e featured the voice of the child's mother calling either the child'sname,giving instructions such as:"Wake up! Leave the room or both. Eachchild slept in a lab-based room that resembled a real bedroom.The results show that vocal alarms appearto be more effective than high-pitched beeps. About 90% of children woke fo r avoice alarm compared with just over 53% for the traditional alarm"High pitched beeping alarms don'twake up children well at all under about 12 years of age." Said Dr GarySmith,a co-author of the research from the Nationwide Children's hospital in Ohio,although he said at present it is not known why He saided to comfort Mother. And in theiranguish,they both forgot the nearness of my bedroom. And so,I overheard them.While their problem of that time has long since been solved and forgotten,thebig discovery I made that night is still right with me:life is not all heartsand flowers;indeed it's hard and cruel for most of us much of the time. We allhave troubles. They just differ in nature. That's all. And that leads me to myfirst beliefIbelieve the human race is very,very tough almost impossible to discourage. Ifit wasn't,then why do we have such words as "laugh" and "sing"and "music" and "dance" in the language of all mankindsince the beginning of recorded time? This beli ef makes me round to be a human bein.Next,I believe in trying to be charitable,in trying to understand and forgivepeople,especially in trying to forgive very keen or brilliant people. A man maybe a genius,you know,but he can still do things that practically break yourheart.Ibelieve most of our very finest thoughts and many of our finest deeds must bekept to ourselves alone at least until after we die. This used to confuse me. Butnow I realize that by their very nature,these finest things we do and thencannot talk about are a sort of a better life to come.Ibelieve there is no escape from the rule of life that we must do many,many littlethings to accomplish even just one big t hing. This gives me patience when Ineed it most.Finally,and most important to me,I do believe in having the courage to BE YOURSELF or perhapsI should say,to be ho nest with myself. Sometimes this is practicallyimpossible. I'm sure I should always try.(1) Why does the writer mention his parents quarrel at the beginning of the passage?(2) What does the underlined phrase "hearts and flowers" refer to according to the context?(3) According to Paragraph 2,why does the writer say that "This belief makes me proud to be a human being"?(4) What can you learn from Paragraph 3?(5) Which one of the following beliefs is NOT mentioned by the writer?三、语法填空(共10小题;每小题1分,满分10分)5. 阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空。
宁波市2019年科学普通高中保送生招生综合素质测试试卷解析版

宁波市2019年科学普通高中保送生招生综合素质测试试卷解析版一、选择题1.下列有关生活、地理等的说法中正确的是()A.某洗衣粉含有蛋白酶,能高效分解油污B.宇宙微波背景辐射是宇宙起源于热大爆炸的有力证据C.使用农家肥作肥料,其能量可以流向植物,实现了对能量的多级利用D.月食发生在农历初一,那时太阳、地球、月球恰好或几乎在一条直线上【答案】B【解析】【考点】日食和月食的成因,大爆炸宇宙论,能量流动和物质循环,酶及其催化作用【分析】(1)酶被称为生物催化剂,它的催化具有专一性、高效性,受温度、PH值影响等特点。
(2)1946年,伽莫夫与他的两个学生—拉尔夫·阿尔菲和罗伯特·赫尔曼一道,首次将相对论和化学元素生成理论引入宇宙学,提出了热大爆炸宇宙学模型。
伽莫夫认为:宇宙最初开始于高温高密度的原始物质,温度超过几十亿度,那时的宇宙中充满的是辐射和基本粒子;随着宇宙膨胀,温度逐渐下降,物质逐渐凝聚成星云,再演化成今天的各种天体。
(3)生态系统中,物质是循环的,能量流动是单向的、逐级减少的(4)当月球运行到地球与太阳之间,月球遮住了太阳的一部分时,出现日偏食;月球只遮住了太阳的中心部分、在太阳周围还露出一圈日面时,出现日环食;太阳完全被遮住时,出现日全食。
【解答】A.酶的催化具有专一性,某洗衣粉含有蛋白酶,只能催化分解蛋白质类物质,而油污的主要成分是脂肪类物质,所以不能高效分解油污,说法错误。
B.宇宙微波背景辐射是宇宙起源于热大爆炸的有力证据,故说法正确。
C.使用农家肥作肥料,其物质成为植物的组成部分,植物中存储的能量来至于光合作用所固定的太阳能,故所法错误。
D.月食发生在农历十五,那时太阳、地球、月球恰好或几乎在一条直线上,月球运行到地球与太阳之间,月球遮住了太阳的一部分或全部而形成的,故说法错误。
故答案为:B2.下列说法正确的是()A.保持教室清洁与通风属于预防传染病中的保护易感人群B.解剖一朵花,观察其结构,在子房内看到的白色小颗粒是花药C.肺泡壁和毛细血管壁都由一层上皮细胞构成,有利于进行气体交换D.运动时骨骼肌产生热量增加,皮肤血管血流量增加,不利于散热【答案】C【解析】【考点】人体呼吸系统的结构和气体交换,体温的控制,花的结构,传染病的预防措施【分析】(1)传染病是由病原体引起的,能够在生物体之间传播的一种疾病,具有传染性和流行性等特点。
2019年浙江省宁波市高中保送生考试【科学】试题及答案

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2019中考慈溪中学保送生重点考试及解析【一】单项选择〔共15题,每题1分,计15分〕1、_______younggirlremindedmeofmyyouthgone.I’mnow______has-beenthatcantellwhattodoornottodo.A.The;aB.A;theC.A;aD.The;不填2、WrittenbySuzanneCollins,thenovel“TheHungerGames”hasbeenonBest-SellingBookslistfortwoyearssinceit______in2017.A、hasbeenpublishedB.waspublishedChadpublishedD.published3、Toworkoutamathsproblem,WeuseXasthe______foranunknownquantity.A.logoB.symbolC.brandD.slogan4、Marykeptlookingatthenewclassmate,______whethershehadseenhersomewhere.A.wonderedB.towonderC.wonderingD.wonder5、IcanspeakalittleItalian.I_____quitealotofItalianwhenIwasinItaly.A.madeupB.tookupC.pickedupD.showedup6、Asweallknow,thepeopleintheareaareproudofwhatthey_______inthepast30years.A.achieveB.achievedC.haveachievedD.hadachieved7、---WhydidyougiveupthejobinAustralia?--BecauseIdon’twanttostayfarawayfrommyfamily.Youknow,myfamilymeans___tome.A.everythingB.nothingC.anythingD.something8、Aftermonthsofregularexerciseinswimming,Marywasabletocover__________seemedtob eimpossibletoreach.A.whatB.whichC.thatD.it9、Thebuildingsinthismoderncityaregrowingtall,someevenreachingover400meters____ ____height.A.inB.forC.atD.on10、-Whatdoesthesignovertheresay?-“Noperson____________bringdrinksintothestudentcomputerpool.”A.willB.mayC.shallD.must11、Runningacompanyisnot______amatterofhiringpeople—theyalsoneedtobetrained.A.simplyB.partlyC.seriouslyD.equally12、Itwasnotuntiltheycametotheveryspothowseriousthesituationwas.A、didtheyrealizeB、thattheyrealizedC、whentheyrealizedD、wheredidtheyrealize13、inMarch,thatsomanypeoplehadontheirlightwears.A、SohotdidtheweatherbecomeB、SobecamethehotweatherC、HottheweatherbecamesoD、Sohotbecametheweather14、--Aretheytired,Mr.Smith?---Yes,________.Theyhavebeenworkingforatleast20hours.A.They’reexhausted!B.It’stotallyfascinating!C.Keepcool!D.Haveagoodtime!15、---MynameisJonathan.ShallIspellitforyou?---_____________.A.Noproblem.B.Ofcourse,youshould.C.Ifyoudon’tmindD.That’sallright.【二】完型填空〔共15小题,每题1分,计15分〕阅读下面短文,掌握其大意,然后从16~30各题所给的A、B、C和D项中,选出最正确选项。
Jamesshookhismoneyboxagain.Nothing!Hecarefully_16__thecoinsthatlayonthebed. $24.52wasallthathehad.Thebicyclehewantedwasatleast$90!Howonearthwashegoingtoget the__17__ofthemoney?Heknewthathisfriendsallhadbicycles.Itwas__18__tohangaroundwithpeoplewhenyou weretheonlyonewithoutwheels.Hethoughtaboutwhathecoulddo.Therewasno__19__askingh isparents,forheknewtheyhadnomoneyto__20__.Therewasonlyonewaytogetmoney,andthatwasto__21__it.Hewouldhavetofindajob.Hed ecidedtoaskMr.Clayforadvice,whousuallyhad__22__onmostthings.“Well,youcanstartrighthere,”saidMr.Clay.“Mywindowsneedcleaningandmycarneedswashing.”Thatwasthe__23__ofJames’s odd-job(零工)business.Forthreemonthsheworkedeverydayafterfinishinghishomework.Hetookdogsa ndbabiesforwalks,clearedoutcupboards,andmendedbooks.Helostcountofthe__24__ofcar shewashedandwindowshecleaned,butthe__25__increasedandheknewthathewouldsoonhavee noughforthebicyclehelongedfor.Theday__26__camewhenJamescountedhismoneyandfound$94.32.He__27_notimeandwentd owntotheshoptopickupthebicyclehewanted.Herode__28__home,lookingforwardtoshowing hisnewbicycletohisfriends.Ithadbeenhard__29__forthemoney,butJamesknewthathevalu edhisbicyclefarmoresincehehadboughtitwithhisownmoney.Hehad__30__whathethoughtwa simpossible,andthatwasworthevenmorethanthebicycle.16. A.cleaned B.covered C.counted D.checked17. A.amount B.part C.sum D.rest18. A.brave B.hard C.smart D.unfair19. A.point B.reason C.result D.right20. A.split B.spend C.spare D.save21. A.borrow B.earn C.raise D.collect22. A.decisions B.experience C.opinions D.knowledge23. A.beginning B.introduction C.requirement D.opening24. A.brand B.number C.size D.type25. A.effort B.pressure C.money D.trouble26. A.finally B.instantly C.normally D.regularly27. A.gave B.left C.took D.wasted28. A.patiently B.proudly C.silently D.tiredly29. A.applying B.asking C.looking D.working30. A.deserved B.benefited C.achieved D.learned一、阅读理解〔共15小题,每题2分,计30分〕A WhenmoviestarScarlettJohanssonwasphotographednaminginLosAngelesrecently,sheat tractedalotofattention;forthe27-year-oldactresswaswearingVibramFiveFingers,socalledbecausetheylookmorelikeglovesthanshoes,withaspaceforeachtoe.Strangethoughtheymaylook,theseso-calledbarefootshoes,whichreproducetheeffec tofbarefootrunningbutwithlesspain,arejustonebrandinarangeofminimalistfootwear.T hesesuper-thinsportsshoesarecausingastirintheworldofrunningandfitness.Why?Becau sesomeexpertsbelieve they couldmakeyouabetter,moreefficientrunnerandthattradition altrainerscouldbedoingyoumoreharmthangood.“Wearingashoethathaslotsofcushioningandsupportaffectsthewayyourbodynatural lymovesandstudiessuggestthatthiscarriesahigherriskofinjury,”explainsMattWallden,anathleteperformanceexpert.“Butwithbarefootshoes,thefootcanactuallyfeelthefirmnessandshapeoftheground,whi challowsyourbodytorespondeffectively.'”Butbeforeyourushouttoinvestinminimalistfootwear,becareful.Thesekindsofshoes arenotmeantforeveryone,oratleastnotstraightaway.“Ordinarysportsshoeswithsupportaregoodforbeginnerswhosebodiesarenotusedtot heimpactofrunning,”explainsPatrickDavoren,formerOlympicathlete.“Ityouarenotingreatcondition,thenrunninginminimalistfootwearmaycauseinjuriesan dwillturnalotofpeopleoffexerciseandrunning.Ifyouarecurrentlyinjured,andfiguresshowthatinanygivenyear65%ofallrunnersare ,itcanbetemptingtotryanythingthatpromisestogetyoubackontheroad,trail,orbeach.Bu tbarefootrunningisnotamethodoftreatinginjurynorisitamagicalwayofsuddenlyturning youintoagreatathlete.Evenifyou'reusedtorunning,whenyoustartusingminimalistshoesyoushouldbuildupy ourdistancegradually.Start_off'bydoingjust10%ofwhatyou'dnormallyrunandincreaset hedistancebynomorethan10%everyweek.Andawordofwarning-youmayneverhavesoftfeetaga in31.TheVibramFiveFingersareshoes______.A.specificallydesignedforwomenB.thathavelotsofcushioninsideC.safestforpeoplewhoenjoysportsD.thataremuchthinnerthannormalsportsshoes32.Theunderlinedword”they“inparagraph2refersto________.A.expertsB.feetC.shoesD.runners33.AccordingtoMattWallden,thenewshoes________.A.makefeetmoresensitivetotherunningsurfaceB.willproduceimmediateimprovementsC.forceyourbodytomovelessnaturallyD.increasethechancesofgettinghurt34.TheauthorsuggeststhatnewusersofVibramFiveFingersshould________.A.runintheshoeseverydayattopspeedB.beginwithashorterrunningdistancethannormalC.occasionallyrunbarefootedtohardentheirfeetD.makesuretheyarealreadyveryfitbeforeusingthem35.Wherewouldyouprobablyreadthisarticle?A.Atravelbook.B.Amoviewebsite.C.Asportsmagazine.D.Asciencejournal.BThedirty,homelessmansatonthepavement,staringattheatones.Hethoughtbackmoreth antwentyyearstowhenhewasaboylivinginasmallredbrickhouseonthisverystreet.Herecal ledtheflowergarden,theswinghisdadmade,andthebikehehadsavedupformonthstobuy.Themanshruggedimpatiently,forthebrightnessofthosepictureshurthim,andhismemo rytravelledonanothertenyears.Hehadajobbythen,plentyoffriendsandstartedtocomehom eless.Hedidnotreallywanttorememberthoseyears,northedaywhen,becauseo'debts,hehad gonehomeplanningtoaskformoney.Hefeltembarrassed,butheknewexactlywherehisdadkept themoney.Whenhisparentssteppedoutoftheroom,hetookwhathewantedandleft.Thatwasthelasttimehehadseenthem.Ashamed,hewentabroad,andhisparentsknewnothi ngabouttheyearsofwanderingortimeinprison.Butlockedinhiscellheoftenthoughtofhome .Oncefree,hewouldlovetoseehisparentsagain,iftheywerestillalive,andstillwantedto seehim.Whenhisprisontimewasup,hefound-ajob,butcouldn'tsettle.Somethingwasdrawinghi mhome.Hedidnotwanttoarrivepenniless,sohehitchhikedmostofthelongjourneyback.Butl essthanamilefromhisdestinationhestartedtofeelsickwithdoubt.Couldtheyeveracceptt hismanwhohadsobitterlydisappointedthem?Hespentmostofthatdaysittingunderatree.Thateveninghepostedaletterwhich,altho ughshort,hadtakenhimhourstowrite.Itendedwith:Iknowitisunreasonableofmetosupposeyouwanttoseeme...soit'suptoyou.I'llcomeea rlyThursdaymorning.Ifyouwantmehome,hangawhitehandkerchiefinthewindowofmyoldbedr oom.Ifit'sthere,I'llcomein;ifnot,I'llwavegood-byeandgo.AndnowitwasThursdaymorningandhewassittingonthepavementattheendofthestreet.F inallyhegotupandwalkedslowlytowardtheoldhouse.Hedrewalongbreathandlooked.Hisparentsweretakingnorisks._______________________________________________ ________________________________________________________________________________ Themanthrewhisheadback,gaveacryofreliefandranstraightthroughtheopenfrontdoo r.36.Whydidthemanshrugimpatiently(paragraph2)whilehewasthinkingofhischildhood?A.Thethoughtsmadehimangry.B.Hefelthehadwastedtime.C.Hewasanxioustogohome.D.Thesweetmemorycausedhimmuchpain.37.Whydidittakehimhourstowritetheletter?A.Hedoubtedifhisparentsstilllivedinthathouse.B.Hehadmuchnewstotellhisparents.C.Hefeltashamedtoaskforforgiveness.D.Hewaslongingtoreturnhomeandfeltexcited.38.Inwhatorderdidthefollowingeventstakeplace?a.Hetookthemoneyfromhisparents.b.Heboughtabicyclewithhissavings.c.Hewassentencedtoprison.d.Hewrotetheletterhome.e.Hesatonthepavement.f.Hehitchhikedbackhome.A.b,a,c,d,e,fB.b,a,c,f,d,eC.a,c,b,d,f,aD.a,d,b,c,e,f39.Whichofthefollowingbestfitsintoparagraph8?A.Everyinchofthehousewascoveredinwhite.Sheets,pillowcasesandtableclotheshad beenplacedoneverywindowanddoor,makingitlooklikeasnowhouse.B.Thehousebeforehimwasjustasheremembered:theredbricks,thebrowndoorand nothingelse.C.Acolourfulblanketwasoverthefrontdoor.Onit,inlargeletters,waswritten,”Welcome home,sonD.Apolicecarwasparkedinthedriveway,andtwoofficersstoodatthefrontdoor.40.Thebesttitleofthepassageis_______.A.SweetMemoryB.WhiteHandkerchiefC.AbandonedSonD.LeavingHomeCManypsychologistsintheearlytwentiethcenturybelievedthathumansuseonly10perce ntoftheirbrains,andeventhegreatAlbertEinsteinoncewrotethatmostpeopleuseonlyasma llportionofthegreymatterbetweentheirears.It'satheorythathasoftenbeenputforwardi ntelevisiondocumentaries;magazines,advertisementsandbooksoverthepastcentury.Butnearlyallscientistsnowagreethe10percenttheoryiscompletely unfounded.Infac t,theyquestionhowthisfigurewaseverarrivedatinthefirstplaceandwhatareasofthebrai naresupposedtobeunneeded.Thetheorysupposesthatif90percentofthebrainwereremoved, apersonwouldStillbeabletofunctionnormally,whileinrealityitisknownthatdamagetoev enasmallareaofthebraincanresultinextremelyseriousphysicalinjurydifferentactivit iesandthatmanyareasofthebrainareusedatthesametimeforsomecomplexactivitiesorthou ghtprocesses.Throughoutthecourseofoneday,most.areasofthebrainareactiveatsometime,evendur ingsleep.The10percenttheorysuggeststhatcertainareaso'thebrainarenotused,butscan sslowactivitiesthroughouttheentirebrainandnotinanyseparatepart.Thefinalargument againstthe10percenttheoryisthefactthatdoctorscarefullymapthebrainbeforeremoving braincancerssothattheydon'taffectotheressentialareas.Fromanevolutionarypointofview,it'shighlyunlikelybuttourcomparativelylargerb rainswouldhaveevolvedfromourancestorsiftheextraareaswerenotneeded.Infact,therei sabsolutelynoevidencesupportthe1ppercenttheory.41.Howdidthe10percenttheorygetsuchwidespreadpopularity?A.Itwaspromotedinvarioustypesofcopularmedia.B.AlbertEinsteinarguedstronglyinsupport.C.Itwasproveninscientificresearch.D.Fewpeoplecouldproveitwrong.42.Theunderlinedword“unfounded”ischestinmeaningto_________.A.undiscoveredB.unprovenC.unknownD.unnecessary43.Whichofthefollowingistrueaccordingtothewriter?A.Weuselessthan10%ofourbrains.B.Mostbraindisordersaffectthesamepartofthebrain.C.Thebrainislessactiveduringtimesofsleep.D.The10percenttheorydoesnotmakeevolutionarysense.44.Whatcanweinferfromthepassage?A.Peopletodayusemoreoftheirbrainthaninthepast.B.Scientificopinionaboutthetopicofbrainuseisequallydivided.C.Ourunderstandingofthebrainhaschangedgreatlyinthepastdecades.D.Modernscientistshaveacompletepictureofhowthebrainworks.45.Whatisthemainpurposeofthepassage?A.Topresenttwosidesofbraintheory.B.Tocriticizethe10percenttheory.C.Toexplainhowbrainworks.D.Todescribethehistoryofbrainresearch.【四】综合填空〔共10小题,每题1分,计10分〕阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空。