13 模拟一
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2024年高考物理模拟试卷注意事项1.考试结束后,请将本试卷和答题卡一并交回.2.答题前,请务必将自己的姓名、准考证号用0.5毫米黑色墨水的签字笔填写在试卷及答题卡的规定位置.3.请认真核对监考员在答题卡上所粘贴的条形码上的姓名、准考证号与本人是否相符.4.作答选择题,必须用2B 铅笔将答题卡上对应选项的方框涂满、涂黑;如需改动,请用橡皮擦干净后,再选涂其他答案.作答非选择题,必须用05毫米黑色墨水的签字笔在答题卡上的指定位置作答,在其他位置作答一律无效.5.如需作图,须用2B 铅笔绘、写清楚,线条、符号等须加黑、加粗.一、单项选择题:本题共6小题,每小题4分,共24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、一个中子与某原子核发生核反应,生成一个氘核,该反应放出的能量为Q ,则氘核的比结合能为( ) A .2Q B .Q C .3Q D .2Q2、如图所示为六根与水平面平行的导线的横截面示意图,导线分布在正六边形的六个角,导线所通电流方向已在图中标出。
已知每条导线在O 点磁感应强度大小为0B ,则正六边形中心O 处磁感应强度的大小和方向( )A .大小为零B .大小02B ,方向沿x 轴负方向C .大小04B ,方向沿x 轴正方向D .大小04B ,方向沿y 轴正方向3、一杯水含有大量的水分子,若杯中水的温度升高,则( )A .水分子的平均动能增大B .只有个别水分子动能增大C .所有水分子的动能都增大D .每个水分子的动能改变量均相同4、用甲、乙、丙三种单色光在同一个光电管上做光电效应实验,发现光电流I 与电压U 的关系如图所示,下列说法正确的是A.甲、乙两种单色光的强度相同B.单色光甲的频率大于单色光丙的频率C.三种单色光在同种介质中传播时,丙的波长最短D.三种单色光中,丙照射时逸出光电子的最大初动能最小5、竖直向上抛出一个小球,图示为小球向上做匀变速直线运动时的频闪照片,频闪仪每隔0.05s闪光一次,测出ac长为23cm,af长为34cm,则下列说法正确的是()A.bc长为13cmB.df长为7cmC.小球的加速度大小为12m/s2D.小球通过d点的速度大小为2.2m/s6、如图所示,A、B、C、D、E、F、G、H是圆O上的8个点,图中虚线均过圆心O点,B和H关于直径AE对称,且∠HOB = 90°,AE⊥CG,M、N关于O点对称.现在M、N两点放置等量异种点电荷,则下列各点中电势和电场强度均相同的是( )A.B点和H点B.B点和F点C.H点和D点D.C点和G点二、多项选择题:本题共4小题,每小题5分,共20分。
国家司法考试卷一(经济法)模拟试卷13(题后含答案及解析)题型有:1. 单项选择题 2. 多项选择题 3. 不定项选择题单项选择题每题所给的选项中只有一个正确答案。
本部分1-50题,每题1分,共50分。
1.红星超市发现其经营的“荷叶牌”速冻水饺不符合食品安全标准,拟采取的下列哪一措施是错误的?(2013年试卷一第28题)A.立即停止经营该品牌水饺B.通知该品牌水饺生产商和消费者C.召回已销售的该品牌水饺D.记录停止经营和通知情况正确答案:C解析:本题考查食品召回制度。
①《食品安全法》采取“主动”与“强制”相结合的食品召回制度。
要求企业发现缺陷食品后主动召回,或者在企业不能承担应尽的社会责任时,应由政府监管部门出面“责令召回”。
②食品召回主体:(1)生产者;(2)县级以上质量监督、工商行政管理、食品药品监督管理部门可以责令召回;(3)食品经营者不是召回主体。
本题中,“红星超市”是食品经营者,并非速冻水饺的生产者,所以其无召回的义务。
③本法第53条规定了食品召回制度。
即第53条:“国家建立食品召回制度。
食品生产者发现其生产的食品不符合食品安全标准,应当立即停止生产,召回已经上市销售的食品,通知相关生产经营者和消费者,并记录召回和通知情况。
食品经营者发现其经营的食品不符合食品安全标准,应当立即停止经营,通知相关生产经营者和消费者,并记录停止经营和通知情况。
食品生产者认为应当召回的,应当立即召回。
食品生产者应当对召回的食品采取补救、无害化处理、销毁等措施,并将食品召回和处理情况向县级以上质量监督部门报告。
食品生产经营者未依照本条规定召回或者停止经营不符合食品安全标准的食品的,县级以上质量监督、工商行政管理、食品药品监督管理部门可以责令其召回或者停止经营。
”知识模块:食品安全法2.关于食品添加剂管制,下列哪一说法符合《食品安全法》的规定?(2011年试卷一第28题)A.向食品生产者供应新型食品添加剂的,必须持有省级卫生行政部门发放的特别许可证B.未获得食品添加剂销售许可的企业,不得销售含有食品添加剂的食品C.生产含有食品添加剂的食品的,必须给产品包装加上载有“食品添加剂”字样的标签D.销售含有食品添加剂的食品的,必须在销售场所设置载明“食品添加剂”字样的专柜正确答案:C解析:本题考查食品添加剂的相关规定。
2024届山东济宁十三中中考物理模拟试题注意事项: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,再选涂其它答案标号。
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.考试结束后,将本试卷和答题卡一并交回。
一、单选题(本大题共10小题,共30分)1.下列四位科学家中,用其名字命名功率单位的是A.瓦特B.焦耳C.牛顿D.欧姆2.为了保证居民安全用电,国家认监委要求自2017年4月14日开始执行插座新国标.左图所示的新国标插座加粗电源线内的线芯,并统一使用三脚插头,改用五孔插口或和二孔插口搭配设计,还在插座处设有保护门.关于新国标插座,下列说法不正确的是()A.加粗电源线内的线芯,可以使电源线的电阻变大,发热少B.电源线使用三脚插头,可以使插座上的用电器外壳带电时,电流流入大地C.新国标插座能减少插座上同时使用的用电器数量,防止用电器的总功率过大D.新国标插座设有保护门,可以避免儿童因为手指或金属物体误触导致触电事故3.如图所示,粗糙的弧形轨道竖直固定于水平面,一小球由A点以速度ν沿轨道滚下,经另一侧等高点B后到达最高点C.下列关于小球滚动过程的分析正确的是()A.整个过程只有重力在对小球做功B.小球在A、B两点具有的动能相同C.小球在A、B、C三点的速度大小关系是νA>νB>νCD.小球在A点具有的机械能等于它在C点具有的重力势能4.甲乙两个滑轮组如图所示,其中的每一个滑轮都相同,用它们分别将重物G1、G2提高相同的高度,不计滑轮组的摩擦,下列说法中正确的是()A.若G1= G2,拉力做的额外功相同B.若G1= G2,拉力做的总功相同C.若G1= G2,甲的机械效率大于乙的机械效率D.用甲乙其中的任何一个滑轮组提起不同的重物,机械效率不变5.如图所示,杠杆AOB的A端挂重为G A的物体,B端挂重为G B的物体,杠杆平衡时AO处于水平位置,若AO=BO,杠杆自重不计,则G A和G B的大小关系是A.G A>G B B.G A=G B C.G A<G B D.无法比较6.想测量家里一个月消耗的电能,需要选用的仪表是A.电流表B.电压表C.电能表D.变阻器7.对下列四幅图的说法正确的是()A.甲图中针头做得很尖目的是增大压力B.乙图中的水壶利用了连通器原理C.丙图中钢笔吸墨水利用了帕斯卡定律D.丁图中简易喷雾器说明流体在流速大的地方压强大8.图所示为滑动变阻器的四种接线方法,把它们分别连接在电路中,当滑片P向右移动时,可使通过滑动变阻器的电流变大的接法是A.B.C.D.9.如图所示的电路中,闭合开关S1和S2,灯泡L1和L2均发光,下列说法正确的是A.电流表测量干路的电流B.电压表示数等于L1的电压C.只断开S2,电流表示数不变D.只断开S2,电压表示数变为零10.水平桌面上,甲、乙两相同的杯中盛有不同浓度的盐水.现将两相同的物块分别放入杯中,待物块静止时,两杯中液面恰好相平,如图所示.则()A.甲杯中物块受到浮力较大B.乙杯底部受到液体的压强较大C.向甲杯中缓慢加盐,物块受到的浮力一直增大D.向乙杯中缓慢加水,物块受到的浮力一直减小二、多选题(本大题共3小题,共12分)11.如图所示是一位运动员在参加跳板跳水比赛时的分解动作,依次是压板、跳起、腾空,这几个动作之后还有下落和入水.下列判断正确的是A.压板时跳板向下弯曲,说明力能改变物体的形状B.跳板前端被压到最低时,它的弹性势能最大C.运动员在空中向上运动,是动能转化为重力势能D.运动员下落和入水过程中,机械能总量保持不变12.如图所示,电源电压U为10 V并保持不变,滑动变阻器规格为“20 Ω 1 A”.闭合开关S,当滑片P移至最左端时,灯泡正常发光,电流表示数为0.5 A;当滑片P移至中点时,电流表示数为0.4 A.则A.电路消耗的最小功率为2.5 WB.滑片P在中点时,灯泡消耗的功率为2.4 WC.滑片P在中点时,灯泡消耗的功率为3.2 WD.滑片P在最左端时,2 min内电流通过灯泡所做的功为600 J13.质量相同的甲、乙两种物质从固态开始加热,它们在相同时间内吸收的热量相等加热时间都为6分钟,它们的温度随时间变化的图象如图所示。
国家统一法律职业资格考试卷一刑法分类模拟13不定项选择题1. 甲女因抢劫杀人被逮捕,羁押期间不慎摔伤流产。
一月后,甲被提起公诉。
对甲的(江南博哥)处理,下列哪一选项是正确的?______A.应当视为“审判时怀孕的妇女”,不适用死刑B.应当视为“审判时怀孕的妇女”,可适用死刑缓期二年执行C.不应当视为“审判时怀孕的妇女”,因甲并非被强制流产D.不应当视为“审判时怀孕的妇女”,因甲并非在审判时摔伤流产正确答案:A[考点] 死刑适用的范围;“审判时怀孕的妇女”的理解[解析] 《关于对怀孕妇女在羁押期间自然流产审判时是否可以适用死刑问题的批复》规定,怀孕妇女因涉嫌犯罪在羁押期间自然流产后,又因同一事实被起诉、交付审判的,仍应当视为“审判的时候怀孕的妇女”,依法不适用死刑。
这里的不适用死刑,包括不适用死刑立即执行,也包括不适用死刑缓期2年执行。
故B、C、D项错误,A项正确。
2. 下列哪些情形不能数罪并罚?______A.投保人甲,为了骗取保险金杀害被保险人B.十五周岁的甲,盗窃时拒捕杀死被害人C.司法工作人员甲,刑讯逼供致被害人死亡D.运送他人偷越边境的甲,遇到检查将被运送人推进大海溺死正确答案:BC[考点] 罪数[解析] 《刑法》第198条规定:“有下列情形之一,进行保险诈骗活动,数额较大的,处5年以下有期徒刑或者拘役,并处1万元以上10万元以下罚金;数额巨大或者有其他严重情节的,处5年以上10年以下有期徒刑,并处2万元以上20万元以下罚金;数额特别巨大或者有其他特别严重情节的,处10年以上有期徒刑,并处2万元以上20万元以下罚金或者没收财产:(一)投保人故意虚构保险标的,骗取保险金的;(二)投保人、被保险人或者受益人对发生的保险事故编造虚假的原因或者夸大损失的程度,骗取保险金的;(三)投保人、被保险人或者受益人编造未曾发生的保险事故,骗取保险金的;(四)投保人、被保险人故意造成财产损失的保险事故,骗取保险金的;(五)投保人、受益人故意造成被保险人死亡、伤残或者疾病,骗取保险金的。
2013高考仿真模拟(13)理综化学部分满分 100分第Ⅰ卷(选择题共42分)一、选择题(本大题共7小题,每小题6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)7.化学与人类生产、生活、社会可持续发展密切相关,下列说法正确的是A.“天宫一号”中使用的碳纤维,是一种新型有机高分子材料B.为改善食品的色、香、味并防止变质,可加入大量食品添加剂C.用CO2合成聚碳酸酯可降解塑料,实现“碳”的循环利用D.大量使用化肥和农药,以提高农作物产量答案:C解析:碳纤维是一种复合材料,A项错误;食品添加剂的使用必须严格按照标准规范加入,不能任意改变其用量,B项错误;大量使用化肥和农药,会对环境造成污染,D项错误。
8.下列化学用语的理解正确的是A.某离子结构示意图为:可以表示35Cl-,也可以表示37Cl-B.电子式为:可以表示羟基,也可以表示氢氧根离子C.比例模型为:可以表示甲烷分子,也可以表示四氯化碳分子D.结构简式(CH3)2CHOH:可以表示1–丙醇,也可以表示2–丙醇答案:A解析:35Cl-和37Cl-质量数不同,但核内质子数和核外电子数相同,A项正确;仅表示羟基,B项错误;C项中的比例模型表示甲烷分子,由于氯原子比碳原子半径大,故该模型不能表示四氯化碳分子;D 项表示2–丙醇。
9.燃烧下列混合气体,所产生的CO2的量一定小于燃烧相同质量的丙烯所产生的CO2的量的是A.丁烯、丙烯 B.乙炔、乙烯C.乙炔、丙烷D.乙烷、环丙烷(C3H6)答案:D解析:本题所求燃烧相同质量的混合烃所产生的二氧化碳的质量一定小于燃烧同质量的丙烯产生的二氧化碳的量,也就是求:等质量的烃中,碳元素的质量分数比丙烯中碳元素的质量分数小的烃。
由于烯烃中C和H原子个数之比为1:2,即碳元素的质量分数相同。
乙炔中碳元素的质量分数大于烯烃中的碳元素的质量分数,而烷烃中的碳元素的质量分数小于烯烃中的碳元素的质量分数,因此只有D选项符合题意。
A CBD30︒45︒E2012—2013淮北市九年级“五校”联考模拟1数学答案一、选择题(本题共10小题,每小题4分,共40分)1、C 2、C 3、D 4、A 5、D 6、A 7、D 8、B 9、B 10、C二、填空题(本题共4小题,每小题5分,共20分)11、8×10-8; 12、< ; 13、250; 14、①②三、(本题共2小题,每小题8分,满分16分)15、解:原式=32123-++- ……………………4分 =1 ……………………8分 16、解:()()01212=---x x x()()01212=-+-x x x ……………………4分()()0131=--x x ……………………6分31,121==x x ……………………8分 四、(本题共2小题,每小题8分,满分16分)17、(1)64;15…………………2分(每空1分)(2)1)1(2+-n 或12n 2+-n ; 2n ; 12-n …………………8分(每空2分)18、(1)图略;……………………2分;A 1(-1,1) …………………4分 (2) 图略;……………………6分;A 2(6,-1)…………………8分五、(本题共2小题,每小题10分,满分20分)19、解: 如图,过点A 作AE CD ⊥于点E ,根据题意,45CAE ∠=︒,30DAE ∠=︒.∵ AB BD ⊥,CD BD ⊥,∴ 四边形ABDE 为矩形. …………………2分 ∴ 123DE AB ==.在Rt ADE △中,tan DEDAE AE∠=, ∴ 1231233tan tan303DE AE DAE ====∠︒.………6分在Rt ACE △中,由45CAE ∠=︒, 得 1233CE AE ==.∴ 123(31)335.8CD CE DE =+=+≈………………9分 答:乙楼CD 的高度为335.8m ……………10分 20、解: (1) a = 18 .……………………………………2分(2) 补充后的频数分布直方图如下所示:………6分学校:__________________ 班级:__________________ 姓名:______________________考号_____________________ …………………………………………………………………………………………………………………………………………………………………………………(3)不合格的学生数为:2107505086=⨯+人………………………………10分 六、(本题满分12分)21 、解:(1)批发购进乌鱼所需总金额y (元)与进货量x (千克)之间的函数关系式:y=26x(20≤x≤40)y=24x(x >40) ……………………………………4分 (2)设该经销商购进乌鱼x 千克,则购进草鱼(75-x )千克,所需进货费用为w 元. 由题意得:90%×(75-x)+96%x≥94%×75.解得x≥50 ……………………………………8分 由题意得w=8(75-x )+24x=16x+600∵16>0,∴w 的值随x 的增大而增大. ∴当x=50时,75-x=25,W 最小=1400(元)答:该经销商应购进草鱼25千克,乌鱼50千克,才能使进货费用最低,最低费用为1400元. ……………………………12分七、(本题满分12分)22、解:(1)BD=MF ,BD ⊥MF .………………………2分 延长FM 交BD 于点N ,由题意得:△BAD ≌△MAF .∴BD=MF ,∠ADB=∠AFM .又∵∠DMN=∠AMF , ∴∠ADB+∠DMN=∠AFM+∠AMF =90°,∴∠DNM=90°,∴BD ⊥MF . …………………………4分(2)β的度数为60°或15° …………………… 8分(答对一个得2分) (3)由题意得矩形.设,则,在中,∵,∴,∴. ∵,, ∴ ∴……………………10分∵,∴.∵,∴.∴∴ 解得. 即.答:平移的距离是. ………………………12分八、(本题满分14分)23、解:(1)p=—2x+80 ……………………………………………………2分 (2)设日销售利润为w 元,当1≤x ≤10时,w=(—2x+80)( 41x+25-20)= —21(x-10)2+450 ……………4分 当11≤x ≤20 时,w=(—2x+80)( —21x+40 -20)= (x-40)2………………………6分 因为w=—21(x-10)2+450(1≤x ≤10)的对称轴为x=10,所以当x=10时,w 取得最大值,最大值是450 ………………………………7分因为w=(x-40)2 (11≤x ≤20)的对称轴为x=40,且当 11≤x ≤20时w 随x 的增大而减小,所以当x=11时,w 取得最大值,最大值是841. ………………………………9分 综上得当x=11时,利润最大,最大值是841元即第11天的利润最大,最大值是841元 ………………………………10分(3)当x=20时,销售价格y 2= —21x+40=30,日销量p=—2x+80=40 …………12分则(30-a )(40+a )=841+284,整理得a 2+10a-75=0 解得a=5或a=-15(不合题意,舍去)所以a=5 …………………………………………………………14分。
2024年学年新疆乌鲁木齐市第十三中学九年级下学期第一次模拟考试数学模拟试题学校:___________姓名:___________班级:___________考号:___________一、单选题1.7-的倒数是( )A .17-B .17C .7-D .72.古钱币是我国悠久的历史文化遗产,以下是在《中国古代钱币》特种邮票中选取的部分图形,其中既是轴对称图形又是中心对称图形的是( )A .B .C .D .3.今年春节电影《热辣滚烫》《飞驰人生2》《熊出没⋅逆转时空》《第二十条》在网络上持续引发热议,据国家电影局2月18日发布数据,我国2024年春节档电影票房达8016000000元,创造了新的春节档票房纪录.其中数据8016000000用科学记数法表示为( )A .880.1610⨯B .1080.1610⨯C .100.801610⨯D .98.01610⨯ 4.下列计算正确的是( )A .321mn mn -=B .()22346m n m n =C .()34m m m -⋅=D .()222m n m n +=+ 5.关于一次函数1y x =+,下列说法正确的是( )A .图象经过第一、三、四象限B .图象与y 轴交于点()0,1C .函数值y 随自变量x 的增大而减小D .当1x >-时,0y <6.用配方法解方程2650x x -+=,配方后所得的方程是( )A .2(3)4x +=-B .2(3)4x -=-C .2(3)4x +=D .2(3)4x -= 7.如图,在ABC V 中,90ABC ∠=︒,30ACB ∠=︒,4AB =,点O 为BC 的中点,以O 为圆心,OB 长为半径作半圆,交AC 于点D ,则图中阴影部分的面积是( )A .B .4πC .2πD .2π 8.如图,在Rt ABC △中,901620ACB BC AB ∠=︒==,,,用直尺和圆规作图,BE 交AC 于点F ,根据作图痕迹,下列结论错误的是( )A .BC BD =B .CBE ABE ∠=∠C .:4:5AD AF = D .:1:4AD DB = 9.如图,正方形ABCD 边长为1,点E 在边AB 上(不与A B ,重合),将ADE V 沿直线DE 折叠,点A 落在点1A 处,连接1A B ,将1A B 绕点B 顺时针旋转90︒得到2A B ,连接112A A AC A ,,C .给出下列四个结论:1ABA V ①≌2145CBA ADE ACB ∠+∠=︒V ;②;③点P 是直线DE 上动点,则1CP A P +当30ADE ∠=︒时,1A BE V 的面积其中正确的结论有个.( )A .1B .2C .3D .4二、填空题10x 的取值范围是.11.若正n 边形的一个外角为72︒,则n =.12.分解因式:2436x y y -=.13.一个袋中有1个白球,3个蓝球,这些球除颜色外都相同,从中随机摸出一个球,记下颜色后放回,摇匀后再从中随机摸出一个球,则摸到1个白球和1个蓝球的概率是 . 14.如图,已知在平面直角坐标系中,点A 在x 轴负半轴上,点B 在第二象限内,反比例函数k y x=的图象经过△OAB 的顶点B 和边AB 的中点C ,如果△OAB 的面积为6,那么k 的值是 .15.如图,在矩形ABCD 中,13AD =,24AB =,点E 是边AB 上的一个动点,将CBE ∆沿CE 折叠,得到CB E '∆.连接AB '、DB ',若ADB '∆为等腰三角形,则BE 的长为.三、解答题16.(1)计算:02π12sin3022-⎛⎫⎛⎫-- ⎝⎝︒⎪⎪⎭⎭ (2)化简:()()()()22224x y x y x y x x y ++-++-17.先化简,再求值:2344111x x x x x -+⎛⎫-+÷ ⎪++⎝⎭,请从1-,0,2中选择一个合适的x 的值代入求值.18.如图,B 是线段AC 的中点,,AD BE BD CE ∥∥,求证:ABD BCE V V ≌.19.宁夏某枸杞育种改良试验基地对新培育的甲、乙两个品种各试种一亩,从两块试验地中各随机抽取10棵,对其产量(千克/棵)进行整理分析.下面给出了部分信息: 甲品种:2.0,3.2,3.1,3.2,3.1,2.5,3.2,3.6,3.8,3.9乙品种:如图所示根据以上信息,完成下列问题:(1)填空:=a ______,b =______;(2)若乙品种种植300棵,估计其产量不低于3.16千克的棵数;(3)请从某一个方面简要说明哪个品种更好.20.为建设美好公园社区,增强民众生活幸福感,某社区服务中心在文化活动室墙外安装避阳篷,便于社区居民休憩.如图,在侧面示意图中,遮阳篷AB 长为5米,与水平面的夹角为16︒,且靠墙端离地高BC 为4米,当太阳光线AD 与地面CE 的夹角为45︒时,求阴影CD 的长.(结果精确到0.1米;参考数据:sin160.28,cos160.96,tan160.29︒≈︒≈︒≈)21.小刚去超市购买画笔,第一次花60元买了若干支A 型画笔,第二次超市推荐了B 型画笔,但B 型画笔比A 型画笔的单价贵2元,他又花100元买了相同支数的B 型画笔.(1)超市B 型画笔单价多少元?(2)小刚使用两种画笔后,决定以后使用B 型画笔,但感觉其价格稍贵,和超市沟通后,超市给出以下优惠方案:一次购买不超过20支,则每支B 型画笔打九折;若一次购买超过20支,则前20支打九折,超过的部分打八折.设小刚购买的B 型画笔x 支,购买费用为y 元,请写出y 关于x 的函数关系式.(3)在(2)的优惠方案下,若小刚计划用270元购买B 型画笔,则能购买多少支B 型画笔?22.如图,在ABC V 的边BC 上取一点O ,以O 为圆心,OC 为半径画⊙O ,⊙O 与边AB 相切于点D ,AC AD =,连接OA 交⊙O 于点E ,连接CE ,并延长交线段AB 于点F .(1)求证:AC 是⊙O 的切线;(2)若10AB =,4tan 3B =,求⊙O 的半径;(3)若F 是AB 的中点,试探究BD CE +与AF 的数量关系并说明理由.23.抛物线213y x bx c =++与x 轴分别交于点,(4,0)A B ,与y 轴交于点(0,4)C -.(1)求抛物线的解析式.(2)如图1,BCPQ Y 顶点P 在抛物线上,如果BCPQ Y 面积为某值时,符合条件的点P 有且只有三个,求点P 的坐标.(3)如图2,点M 在第二象限的抛物线上,点N 在MO 延长线上,2OM ON =,连接BN 并延长到点D ,使ND NB =.MD 交x 轴于点E ,DEB ∠与DBE ∠均为锐角,tan 2tan DEB DBE ∠=∠,求点M 的坐标.。
河北省保定市2013届高三第一次模拟考试理综试题本试卷满分300分,考试时间150分钟。
注意事项:1. 本试卷分第I卷(选择题)和第II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,再选涂其它答案标号。
写在试卷上无效。
3. 回答第II卷时,将答案写在答题卡上,写在本试卷上无效。
4. 考试结束后,将答题卡交回。
可能用到的相对原子质量:H—1 C-12 0—16 Na-23 Mg—24Ai—27 K—39 Cr—52 Fe-56 Cu-64第I卷(选择题,共126分)一、选择题:本题包括13个小题,每小题6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.下列关于各种生物膜的说法正确的是A.线粒体内膜附着有大量与有氧呼吸有关的酶,是线粒体中生成ATP的主要场所B.突触后膜上的受体与神经递质发生特异性结合后将神经递质输入细胞C.突触前膜通过主动运输将神经递质分泌到突触间隙D.叶绿体囊状结构薄膜上附着有大量与光合作用有关的酶,是叶绿体中生成光合产物的主要场所2.右图为细胞核结构模式图,下列有关叙述不正确的是A.①主要由DNA和蛋白质组成,在细胞分裂不同时期呈现不同状态B.②是产生核糖体、mRNA和合成蛋白质的场所C.③在细胞周期中发生周期性变化,其主要成分是磷脂和蛋白质D.蛋白质和RNA等大分子物质通过核孔进出细胞核需要消耗能量3.有关下列实验的说法正确的①脂肪鉴定②噬菌体侵染细菌实验③证明DNA半保留复制④叶绿体中色素的提取和分离A.①②均使用光学显微镜 B.①④均使用无水乙醇C.③④均使用离心技术 D.②③均使用同位素标记法4.下图表示人体对刺激的反应,相关说法不正确的是A.刺激可能来自内环境理化性质的改变或外界环境的变化B.①②④和①④均表示神经调节C.内环境中血糖和PH调节均主要与⑥⑤途径有关D.剧烈运动时,①②③、①④⑤和⑥⑤途径共同发挥作用维持内环境稳定5.一株红花植株上开满红花,其中仅出现一朵白花,则白花出现的原因不可能是 A.植物发生性状分离B.相关体细胞发生隐性基因突变C.相关体细胞发生显性基因突变D.相关体细胞有丝分裂过程中丢失了包含红花基因的染色体片段6.下图是某生态系统能量流动的示意图,下列叙述正确的是A.发生X1过程的生物一定是绿色植物B.X2过程表示的是初级消费者摄入的能量C.次级消费者粪便中的能量包含于Z3中D.第一营养级到第二营养级的能量传递效率可用X2/X1表示7. 有人设想合成具有以下结构的四种烃分子,下列有关说法不正确的是A. 1mol甲分子内含有lOmol共价键 B由乙分子构成的物质不能发生氧化反应C. 丙分子的二氯取代产物只有三种D.分子丁显然是不可能合成的8. 用N A表示阿伏加德罗常数,下列说法正确的是A. 500mL2mol/L葡萄糖溶液中所含分子数为N AB 0.1mol/L Na2CO3溶液中的阴离子总数大于0.1N AC. 电解精炼铜时,若阳极质量减少64G,则外电路导线上不一定通过2N A个电子D. 5.6g铁粉在0.1mol氯气中充分燃烧,转移电子数为0.3N A9. 下表是元素周期表的一部分,下列有关说法正确的是A. A、B两元素的单质掏成原电池两极时,A—定为负极B e的氢化物分子和D的氢化物分子不可能含有相同的电子数C六种元素中,C元素与其它三种非金属元素均能形成化合物D. C、E、f的含氧酸的酸性依次增强10. 下列用来表示物质变化的化学反应中正确的是A. 表示中和热的热化学方程式:B. 硫酸氢铵溶液与少量氢氧化钠溶液混合共热的离子方程式:C. 在强碱溶液中次氣酸钠与F E(0H)3反应生成N A2F E04的离子方程式:D. 足量酸性高锰酸钾溶液与双氧水反应的离子方程式:11. 下列有关物质的性质或应用的说法正确的是A. 石油裂化的主要产品是甲烷、乙烯和苯B除去乙醇中的少量水需加入氢氧化钙,再迸行蒸馏并灼烧C盐析可提纯蛋白质并能保持蛋白质的生理活性D.木糖醇(C5H12O5)是一种甜味剂,与葡萄糠互为同系物12. RO2受热分解为+4和+2价的混合氧化物,-4价的R能氧化浓盐酸生成C L2,现将1MOL RO2加热分解得到O2,再向残余固体中加入过量的浓盐酸得到C L2,所得 O3和C L2物质的量之比为3:2,则残余固体的组成及物质的量之比可能是A. R3O4. RO, 2 :1B. RO2. RO, 1 : 3C. RO2, R3O4 1 : 2 D, RO2, R0, 1 : 413. 甲酸甲酯水解反应方程武为:ΔH>0。
2013年门头沟区初三年级第一次模拟测试数 学一、选择题(本题共32分,每小题4分)下列各题均有四个选项,其中只有一个..是符合题意的. 1.-3的倒数是A .3B .13 C .3- D .13-2.2012年北京市的经济又迈上新的台阶,全市地区生产总值达到了1 780 000 000 000元,将1 780 000 000 000用科学记数法表示应为A .130.17810⨯B .121.7810⨯C .1117.810⨯D .101.7810⨯ 3.若一个多边形的内角和等于900º,则这个多边形的边数是 A .5B .6C .7D .84.如图,OA 是⊙O 的半径,弦BC ⊥OA ,D 是⊙O 上一点, 若∠ADC =26º,则∠AOB 的度数为 A .13º B .26º C .52º D .78º5.右图是某个几何体的表面展开图,则该几何体的左视图为6.有6张形状、大小、质地均相同的卡片,正面分别印有数字1、2、3、4、5、6,背面完全相同.现将这6张卡片洗匀后正面向下放在桌子上,从中随机抽取一张,抽出的卡片正面印有的数字恰好是奇数的概率为 A .16 B .14C . 13D . 12 A .B .C .D .7.小明同学在社会实践活动中调查了20户家庭某月的用水量,如下表所示:则这20户家庭该月用水量的众数和中位数分别是 A .5,7B .7,7C .7,8D .3,78.如图1,从矩形纸片AMEF 中剪去矩形BCDM 后,动点P 从点B 出发,沿BC 、CD 、DE 、EF 运动到点F 停止,设点P 运动的路程为x ,△ABP 的面积为y ,如果y 关于x 的函数图象如图2所示,则图形ABCDEF 的面积是A .28B .32C .36D .48二、填空题(本题共16分,每小题4分) 9. 若分式21x x -+的值为0,则x 的值为 . 10.分解因式:21025ax ax a -+= . 11.如图,某班课外活动小组的同学用标杆测量学校旗杆的高度,已知标杆高度CD =3m ,标杆与旗杆的水平 距离BD =15m ,人的眼睛与地面的高度EF =1.6m ,人 与标杆CD 的水平距离DF =2m ,且E 、C 、A 三点在 同一条直线上,则旗杆AB 的高度是 m .12.如图,在平面直角坐标系xOy 中,点0M 的坐标为(1,0),将线段0OM 绕原点O 沿逆时针方向旋转45︒,再将其延长到1M ,使得001OM M M ⊥,得到线段1OM ;又将线段1OM 绕原点O 沿逆时针方向旋转45︒,再将其延长到2M 使得112OM M M ⊥,得到线段2OM ,如此下去,得到线 段3OM ,4OM ,,则点1M 的坐标是 , 点M 5的坐标是 ;若把点)(n n n y x M ,(n 是自然数)的横坐标n ,纵坐 标n y 都取绝对值后得到的新坐标(),n n x y 称之为点n M 的绝对坐标, 则点83n M +的绝对坐标是 (用含n 的代数式表示).图1 E D M BA F C三、解答题(本题共30分,每小题5分)13.计算:1013tan 30(1)6-⎛⎫-︒π- ⎪⎝⎭.14.解不等式组:234,314 5.x x x x +<+⎧⎨+-⎩≥15.已知1582=+x x ,求2)12()1(4)2)(2(++---+x x x x x 的值.16.已知:如图,点A 、E 、B 在同一条直线上,AC ∥DB ,AB =BD ,AC =BE . 求证:BC =DE .17.如图,在平面直角坐标系xOy 中,一次函数y kx b =+的图象与反比例函数my x=的图象交于A (2,3)、 B (3-,n )两点.(1)求一次函数和反比例函数的解析式;(2)若P 是y 轴上一点,且满足△P AB 的面积是5,直接写出OP 的长.18.列方程或方程组解应用题:某地要对一条长2500米的公路进行道路改造,在改造了1000米后,为了减少施工对交通造成的影响,采用了新的施工工艺,使每天的工作效率是原来的1.5倍,结果提前5天完成任务,求原来每天改造道路多少米.四、解答题(本题共20分,每小题5分) 19.如图,在四边形ABCD 中,∠A =∠ADC =120º,AB =AD ,E 是BC 的中点,DE =15,DC =24, 求四边形ABCD 的周长.A BDEDCE AB20.已知:如图,AB 是⊙O 的直径,AC 是⊙O 的弦,M 为AB 上一点,过点M 作DM ⊥AB ,交弦AC 于点E ,交⊙O 于点F ,且DC =DE . (1)求证:DC 是⊙O 的切线;(2)如果DM =15,CE =10,5cos 13AEM ∠=,求⊙O 半径的长.21.某市政园林绿化局要对甲、乙、丙、丁四个品种的树苗进行树苗成活率试验,从中选取成活率高的品种进行推广.通过试验得知丙种树苗的成活率为89.6%,以下是根据试验数据制成的统计图表的一部分.请你根据以上信息解答下列问题:(1)这次试验所用四个品种的树苗共 株; (2)将表1、图1和图2补充完整; (3)求这次试验的树苗成活率.试验用树苗中各品种树苗所占百分比统计图图1 各品种树苗成活数统计图图2表1 试验用树苗中各品种树苗种植数统计表22.操作与探究:在平面直角坐标系xOy 中,点P 从原点O 出发,且点P 只能每次向上平移2个单位(1(2任一次平移,点P 可能到达的点在我们学过的一种函数的图象上,如:平移1次后在函数22+-=x y 的图象上;平移2次后在函数42+-=x y 的图象上,….若点P 平移5次后可能到达的点恰好在直线3y x =上,则点P 的坐标是 ; (3)探究运用:点P 从原点O 出发经过n 次平移后,到达直线x y =上的点Q ,且平移的路径长不小于30,不超过32,求点Q 的坐标.五、解答题(本题共22分,第23题7分,第24题7分,第25题8分) 23.已知关于x 的一元二次方程21(2)2602x m x m +-+-=. (1)求证:无论m 取任何实数,方程都有两个实数根; (2) 当<3m 时,关于x 的二次函数21(2)262y x m x m =+-+-的图象与x 轴交于A 、B 两点(点A 在点B 的左侧),与y 轴交于点C ,且2AB =3OC ,求m 的值; (3)在(2)的条件下,过点C 作直线l ∥x 轴,将二次函数图象在y 轴左侧的部分沿直线l 翻折,二次函数图象的其余部分保持不变,得到一个新的图象,记为G .请你结合图象回答:当直线13y x b =+与图象24.已知:在△ABC 中,AB =AC ,点D 为BC 边的中点,点F 是AB 边上一点,点E 在线段DF 的延长线上,点M 在线段DF 上,且∠BAE =∠BDF ,∠ABE =∠DBM . (1) 如图1,当∠ABC =45°时,线段 DM 与AE 之间的数量关系是 ; (2) 如图2,当∠ABC =60°时,线段 DM 与AE 之间的数量关系是 ;(3)① 如图3,当ABC α∠=(0<<90α︒︒)时,线段 DM 与AE 之间的数量关系是 ;② 在(2)的条件下延长BM 到P ,使MP =BM ,连结CP ,若AB =7,AE =求sin ∠ACP 的值.25.在平面直角坐标系xOy 中,抛物线2y x bx c =-++与x 轴交于A 、B 两点,与y 轴交于点C ,顶点为D ,过点A 的直线与抛物线交于点E ,与y 轴交于点F ,且点B 的坐标为(3,0),点E 的坐标为(2,3). (1)求抛物线的解析式;(2)若点G 为抛物线对称轴上的一个动点,H 为x 轴上一点,当以点C 、G 、H 、F四点所围成的四边形的周长最小时,求出这个最小值及点G 、H 的坐标; (3)设直线AE 与抛物线对称轴的交点为P ,M 为直线AE 上的任意一点,过点M 作MN ∥PD 交抛物线于点N ,以P 、D 、M 、N 为顶点的四边形能否为平行四边形?若能,请求点M A B CD EFMMFED CA ABCD EF M 图1图2图32013年北京市门头沟区初三年级第一次模拟测试数学试卷评分参考一、选择题(本题共32分,每小题4分)三、解答题(本题共30分,每小题5分)13.计算:()1013tan 3016-⎛⎫-︒π- ⎪⎝⎭.解: ()113t a n 32716-⎛⎫-︒π- ⎪⎝⎭=631- ……………………………………………………………………4分=7+. ……………………………………………………………………………5分14.解不等式组:234,314 5.x x x x +<+⎧⎨+-⎩≥解:解不等式①,得 x <1. …………………………………………………………2分解不等式②,得 x ≤6. …………………………………………………………4分∴原不等式组的解集为x <1. (5)分15.解:2(2)(2)4(1)(21)x x x x x ++--++222444441x x x x x =--++++ …………………………………………………3分283x x =+-...............................................................................4分 当2815x x +=时,原式15312=-=. (5)分16.证明:∵AC ∥DB ,∴∠BAC =∠DBA .…………………………………………………………………①②1分在△BAC 与△DBE 中,,,,AB BD BAC DBA AC BE =⎧⎪∠=∠⎨⎪=⎩∴△BAC ≌△DBE . ..................................................................4分 ∴BC =DE . (5)分17.解:(1)∵反比例函数my x=的图象经过点A (2,3), ∴m =6.∴反比例函数的解析式是6y x=. …………1分点A (-3,n )在反比例函数6y x=的图象上, ∴n =-2.∴B (-3,-2).……………………………2分 ∵一次函数y =kx +b 的图象经过A (2,3)、B (-3,-2)两点,∴ 23,3 2.k b k b +=⎧⎨-+=-⎩ 解得1,1.k b =⎧⎨=⎩∴ 一次函数的解析式是y =x +1.…………………………………………………3分(2)OP 的长为 3或1. ………………………………………………………………5分 18.解: 设原来每天改造道路x 米.………………………………………………………………1分依题意,得2500100015005.1.5x x x--= ……………………………………………………3分 解得 x =100. …………………………………………………………………………4分 经检验,x =100是原方程的解,且符合题意.答:原来每天改造道路100米. …………………………………………………………5分四、解答题(本题共20分,每小题5分) 19. 解:如图,过点A 作AF ⊥BD 于F .∵∠BAD =120°,AB =AD ,∴∠ABD =∠ADB =30°.∵∠ADC =120°, ∴∠BDC =∠ADC -∠ADB =12030︒-︒=90°. 在Rt △BDC 中,∠BDC =90°,DE =15,E 是BC 的中点,DC =24, ∴BC=2DE =30.…………………………………2分∴18BD =.………3分∵AD =AB ,AF ⊥BD ,∴1118922DF BD ==⨯=.在Rt △AFD 中,∵∠AFD =90°,∠ADB =30°,∴9cos cos 30DF DF AD AB ADB ====÷=∠︒4分∴四边形ABCD 的周长=AB +AD +DC +BC 243054=++=+ ………5分20. (1)证明:如图1,连结OC .∵OA =OC ,DC =DE ,∴∠A =∠OCA ,∠DCE =∠DEC . 又∵DM ⊥AB ,∴∠A +∠AEM =∠OCA +∠DEC =90°. ∴∠OCA +∠DCE =∠OCD =90°.∴DC 是⊙O 的切线.………………………2分(2)解:如图2,过点D 作DG ⊥AC 于点G ,连结BC .∵DC =DE ,CE =10,∴EG =12CE =5.∵cos ∠DEG =cos ∠AEM =EG DE =513, ∴DE =13.∴DG=12. ∵DM =15,∴EM =DM -DE =2.…………3分 ∵∠AME =∠DGE =90°,∠AEM =∠DEG , ∴△AEM ∽△DEG . ∴AM EM AE =DG EG DE =.∴212513AM AE==. ∴245AM =,265AE =. ∴AC AE EC =+=765.∵AB 为⊙O 的直径,∴∠ACB =90°. ∴cos A =AM AC AE AB=.∴24715AB =.…………4分 F BAECD 图1AA图2∴⊙O 的半径长为1247230AB =. ………………………………………………5分21.解:(1)500. (1)分(2)补全表1、图1和图2. (4)分(3)89.8%. (5)分22.解:(1)(0,6),(1,4),(2,2),(3,0).……………………………………………2分(2)(2,6).……………………………………………………………………………3分(3)设点Q 的坐标为(x ,y ).由题意,得 ⎩⎨⎧=+-=.,22x y n x y 解得 2,32.3n x n y ⎧=⎪⎪⎨⎪=⎪⎩∴ 点Q 的坐标为)32,32(nn . ∵平移的路径长为x +y ,∴30≤34n≤32.∴22.5≤n ≤24. ∵点Q 的坐标为正整数,∴点Q 的坐标为(16,16). ………………………5分五、解答题(本题共22分,第23、24题各7分,第25题8分)23.解:(1)根据题意,得221Δ(2)4(26)(4)2m m m =--⨯⨯-=-.∵无论m 为任何实数时,都有(m -4)2≥0,即Δ≥0,∴方程有两个实数根. (2)分(2)令y =0,则21(2)2602x m x m +-+-=. 解得 x 1=6-2m ,x 2=-2.∵ m <3,点A 在点B 的左侧, ∴ A (-2,0),B (26m -+,0).……………………………………………3分∴ OA=2,OB =26m -+. 令x =0,得y =2m -6. ∴C (0,2m -6).∴OC =-(2m -6)=-2m +6.∵ 2AB =3 OC ,∴ 2(226)3(26)m m -+=-+.解1m = (3)当1m =时,抛物线的解析式为2142y x x =--,点C 的坐标为(0,-4).当直线13y x b =+经过C 点时,可得b =-4.当直线13y x b =+(b <-4)与函数2142y x x =--(x >0)的图象只一个公共点时, 得211432x b x x +=--. 整理得2386240.x x b ---=由()()2Δ8436240b =--⨯⨯--=,解得449b =-.结合图象可知,符合题意的b 的取值范围为b >-4或44<9b -.………………7分24.解:(1)DM AE =. (2)分(2)12DM AE =. …………………………………………………………………3分(3)①cos DM AE =α. ………………………………………………………………4分② 如图,连结AD 、EP . ∵AB =AC ,∠ABC =60°, ∴△ABC 为等边三角形.又∵D 为BC 的中点,∴AD ⊥BC ,∠DAC =30°,BD =DC =12BC =72. ∵∠BAE =∠BDM ,∠ABE =∠DBM ,∴△ABE ∽△DBM .∴12BM DB BE AB ==.∴EB =2BM . 又∵PB =2BM ,∴EB =PB .∵60EBP ABE ABP PBC ABP ABC ∠=∠+∠=∠+∠=∠=︒,∴△BEP 为等边三角形.∴EM ⊥BP .∴∠BMD =90°.k B 1 . c o m ∵D 为BC 的中点,M 为BP 的中点,∴DM ∥PC .∴∠BPC =∠BMD = 90°. ∵AB CB =,BE BP =,∠ABE =∠DBM , ∴△ABE ≌△CBP .∴BCP BAE ∠=∠,∠BPC =∠BEA = 90°.在Rt △AEB 中,∵∠BEA =90°,AE=AB =7,∴cos EAB ∠∴cos cos PCB BAE ∠=∠=5分 在Rt △ABD中,sin AD AB ABD =⋅∠=, 在Rt △NDC中,cos DC CN NCD ==∠∴ND =∴NA AD ND =-=过点N 作NH ⊥AC 于H .∴12NH AN =6分∴sin NH ACP CN ∠== (7)分25. 解:(1)由二次函数2y x bx c =-++的图象经过B (3,0)、E (2,3)两点,得930,42 3.b c b c -++=⎧⎨-++=⎩ 解这个方程组,得2,3.b c =⎧⎨=⎩ ………………………………1分 ∴抛物线的解析式为223y x x =-++. …………………………………………2分(2)令y =0,得2230x x -++=.解这个方程,得x 1=-1,x 2=3.∴A (-1,0). 令x =0,得3y =.∴C (0,3).如图,在y 轴的负半轴上取一点I ,使得点F在x 轴上取一点H ,连结HF 、HI 、HG 、GC 、∵抛物线的对称轴为直线1x =,HP ACEF M N 图2∴点C 与点E 关于直线1x =对称,CG =EG . 设直线AE 的解析式为y =kx +b . ∴0,2 3.k b k b -+=⎧⎨+=⎩ 解得 1,1.k b =⎧⎨=⎩ ∴直线AE 的解析式为y =x +1.令x =0,得y =1.∴点F 的坐标为(0,1). ∴CF =2.∵点F 与点I 关于x 轴对称,∴I (0,-1).∴EI ==∵要使四边形CFHG 的周长最小,由于CF 是一个定值, ∴只要使CG +GH +HF 最小即可. ∵CG +GH +HF =EG +GH +HI ,∴只有当EI 为一条直线时,EG +GH +HI 最小. 设直线EI 的解析式为y =k 1x +b 1.∴11123,1.k b b +=⎧⎨=-⎩ 解得112,1.k b =⎧⎨=-⎩∴直线EI 的解析式为y =2x -1. ∵当x =1时,y =1,∴点G 的坐标为(1,1).…………………………………3分∵当y =0时,12x =,∴点H 的坐标为(12,0). ……………………………4分∴四边形CFHG 周长的最小值=CF +CG +GH +HF =CF +EI=2+……5 分(3) 以P 、D 、M 、N由抛物线223y x x =-++的顶点D 的坐标为(1直线AE 与对称轴的交点P 的坐标为(1,2),得∵点M 在直线AE 上, 设M (x ,x +1),①当点M 在线段AE 上时,点N 在点M 上方, 则N (x ,x +3) .∵N 在抛物线上,∴x +3=-x 2+2x +3.解得,x =0或x =1(舍去) ∴M (0,1). ………………………………………………………………………6 分②当点M 在线段AE (或EA )的延长线上时,点N 在点M 下方,则N (x ,x -1).∵N在抛物线上, ∴x-1=-x2+2x+3.解得x x∴M或.……………………………………8 分∴点M的坐标为(0,1)或或.。
2020届南宁市第十三中学高三英语一模试题及参考答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项AThank you. It’s my great honor to be given this award.You cannot imagine that I have always been a late starter. Years ago, when I was 16, I took an important exam — GCE(General Certificate of Education), which turned out to be a failure. My dad was reading my report card and saw that my position in class was 29th, but the number in class was 29. It meant that I had achieved the distinction of being bottom of my class.I wasn’t lazy, and I was really trying. You can picture how I felt. Dad put his hand on my shoulder and said, “You can only do the best you can, but whatever you decide to do, make sure you love it.” He was a really sweet guy and a great man. I knew his attempt to hide his disappointment with some of his encouraging words. I was depressed for a week, but his advice was a wake-up call.Fortunately I love working with my hands, and I was good at two things: woodwork and art, and I really loved to draw and paint. I was quite talented. Dad strongly encouraged me to go to art school, which in those days wasn’t the obvious place that a father would suggest.So I got into Hartlepool College of Art. The college was a revelation (出乎意料), the passionate teachers there, who were extremely interested in the students, not just tolerating them but actually engaging with them. It was a world apart from my schooling until then. It’s extraordinary what an enthusiastic teacher can do, drawing the student out, lighting independence, and encouraging a design of your own future, rather than waiting for something to happen. I’m honored to have become one of these passionate teachers years later.My teachers inspired me, and thanks to my dad, here I am tonight. I think I should mention all the talents I have worked with over time, and to my kids and my wife Giannina, thank you.Thank you for this great award. I shall find a very special place for it.1. How did the author feel after taking GCE?A. Happy.B. Upset.C. Tired.D. Relieved.2. What didHartlepoolCollege of Art impress the author most?A. The teachers were strict with students.B. The students set good examples for each other.C. The teachers inspired students’ passion for learning.D. The students got prepared for their lessons independently.3. The author gave this speech to ________.A. share his career choiceB. explain his teaching methodsC. describe his life experienceD. show his appreciationBIf you've ever had a dog, you know just howdeep a connection you can develop with “man's best friend”. But a dog's life is much shorter than humans, about 12 to 15 years long, which means every dog owner has to go through the heartbreaking moment when their loving pet passes away.Why not make a clone of that dog then? This is the solution offered by a South Korean company, Sooam Biotech Research Foundation. The company has already successfully cloned at least 400 dogs, mostly for US customers, ever since it pioneered the technique in 2005. Now, Sooam Biotech has introduced its business toUKdog owners as well, offering them dogs that look just like their lost ones.To clone a dog, researchers first need to take a skin cell from a living dog or one that has just died. Meanwhile,another dog is selected to supply an egg. Researchers then replace the DNA in the egg with that from the skin cell and implant the egg into the womb (子宫) of a female dog. The egg grows into a puppy over the following two months. The whole process takes less than a day, but it comes at a shockingly high price — around £63,000.But if you can't afford it now, you can also save the cell in a laboratory andaccess it at a later date.However, magical as cloning might sound, there is no guarantee that the cloned dog will be a perfect copy of the original one. Just like identical twins of humans, they share the exactly same DNA but there will still be small differences between them. “The spots on a Dalmatian (斑点狗) clone will be different, for example” Insung Hwang, head of Sooam Biotech, told The Guardian.Dog owners will also have to accept the fact that personality is not “cloneable”. Apart from genes, personality is also determined by upbringing and environment, which are both random elements that cloning technologies simply cannot overcome, Professor Tom Kirkwood atNewcastle University,UK, told The Telegraph.Perhaps bringing our dogs back by cloning is not the best way to remember them after all.Kirkwood, a dog owner himself, pointed out, “An important aspect of our relationship with them is coming to terms with the pain of letting go.”4. What service does Sooam Biotech Research Foundation offer?A. Making copies of pet dogs.B. Giving pet dogs identical twinsC. Helping dogs give birth to more puppies.D.Helping dog owners love their dogs more.5. Which order is correct in the dog cloning process?a. An egg is taken from another dog.b. A skin cell is taken from the pet dog.c. The egg grows into a puppy in two months.d. The egg is placed in the womb of a female dog.e. The DNA in the egg is replaced by the DNA from the skin cell.A.a→d→b→e→c.B. a→e→b→d→cC. b→a→d→e→c.D. b→a→e→d→c.6. What can we learn about dog cloning from the passage?A. It has not been put into practice until recently.B. It is very popular among US andUKpet owners.C. It might not give the owners an exactlysame dog.D. It is very expensive and usually takes half a year to complete.7. What doesKirkwoodthink of dog cloning?A. He disagrees with it.B. He supports it.C. He is curious about it.D. He thinks it unbelievable.CWhen almost everyone has a mobile phone, why are more than half of Australian homes still paying for a landline(座机)?These days you’d be hard pressed to find anyone in Australia over the age of 15 who doesn’t own a mobile phone. In fact plenty of younger kids have one in their pocket. Practically everyone can make and receive calls anywhere, anytime.Still, 55 percent of Australians have a landline phone at home and only just over a quarter(29%)rely only on their smartphones according to a survey(调查). Of those Australians who still have a landline, a thirdconcedethat it’s not really necessary and they’re keeping it as a security blanket — 19 percent say they never use it while afurther13 percent keep it in case of emergencies. I think my home falls into that category.More than half of Australian homes are still choosing to stick with their home phone. Age is naturally a factor (因素)— only 58 percent of Generation Ys still use landlinesnow and then, compared to 84 percent of Baby Boomers who’ve perhaps had the same home number for 50 years. Age isn’t the only factor; I’d say it’s also to do with the makeup of your household.Generation Xers with young families, like my wife and I, can still find it convenient to have a home phone rather than providing a mobile phone for every family member. That said, to be honest the only people who ever ring our home phone are our Baby Boomers parents, to the point where we play a game and guess who iscalling before we pick up the phone(using Caller ID would take the fun out of it).How attached are you to your landline? How long until they go the way of gas street lamps and morning milk deliveries?8. What does paragraph 2 mainly tell us about mobilephones?A. Their target users.B. Their wide popularity.C. Their major functions.D. Their complex design.9. What does the underlined word “concede” in paragraph 3 mean?A. Admit.B. Argue.C. Remember.D. Remark.10. What can we say about Baby Boomers?A. They like smartphone games.B. They enjoy guessing callers’ identity.C. They keep using landline phones.D. They are attached to their family.11. What can be inferred about the landline from the last paragraph?A. It remains a family necessity.B. Itwill fall out of use some day.C. It may increase daily expenses.D. It is as important as the gas light.DYellowstoneNational ParkbecameAmerica's first national park in 1872. The National Park Service was formed 44 years later in 1916.Yellowstone, which is mostly in the state of Wyoming, is considered an example of the success of the National Park System.Humans have been present in Yellowstone for more than 11,000 years.Yellowstone contains beautiful mountains, deep canyons(峡谷), lakes and rivers.The nameYellowstonecomesfrom the river running through the area. At first known as Rock Yellow River, it became known as theYellowstoneRiver.Yellowstoneis host to many different species of plants. However, the park is most distinctive because of what lies underneath it. It sits on top of an ancient super volcano, known as The Yellowstone Caldera. The caldera is 48 by 72 kilometers. And it remains an active volcano.It is believed that the last time the volcano erupted was one half million years ago. The area has had three major eruptions in the last three million years.Experts say it may erupt again in another 1,000 to 10,000 years. But each year, there are thousands of earthquakes atYellowstone. Most are too small to be felt by people visiting the park.Yellowstoneis filled with the beauty of many hot water springs. hot water and gasses are trapped under the earth. they rush to the surface in the form of hot water and steam.Old Faithful is The most famous one .Iterupts about every hour or hour and a half. The eruption can last from one and a half minutes up to 5 minutes. The amount of hot water it expels(排出)in that time can be as much as 31,000 liters or more.In addition to its beauty and wonder, Yellowstone is an animal sanctuary(保护区). It is home to the largest group of wild animals in theUnited States. As you travel through the park, you can sometimes see them in their natural habitat and hear their calls .12. What wasYellowstonenamed after?A. RockYellow RiverB. The amazing mountains.C. The stones with yellow color1D. The first discovery inwyoming.13. What makesYellowstonequite unique?A. The scenery is beautiful.B. There are a lot of explorers.C. It’s home to many plants.D. Its location is very special.14. What does the underlined word“It”in Paragraph 5 refer to?A. The earth.B. Yellowstone.C.Old Faithful.D. TheYellowstoneCaldera.15. What can we infer from the text?A. The Yellowstone Caldera has been dead for years.B. Yellowstone is a shelter for the protected wildlife.C. Big earthquakes happen frequently atYellowstone.D.YellowstoneNational Parkhas attracted visitors for centuries.第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
2023-2024-2初三年级第一次模拟测试英语(问卷)I. 听力部分(20分)图片理解。
听句子,选择正确的图片。
每小题读两遍。
(5分,每题1分)A. B. C. D. E.1.________2. ________3. ________4. ________5. ________B. 情景反应。
听对话,从题中所给的三个选项中选出一个正确应答。
每小题读两遍。
(5分,每题1分)6. What are the speakers mainly talking about?A. A village.B. A park.C. A film.7. What music does Bill like best?A. Folk music.B. Pop music.C. Electronic music.8. Why does Tony want to read more books?A. Because he enjoys reading.B Because he wants to be a writer.C. Because he has to prepare for a test.9. What's the probable relationship between the two speakers?A. Doctor and patient.B. Waiter and customer.C. Mother and son.10. What will the man do this weekend?A. Go camping.B. Stay at home.C. Shop with family.C. 对话理解。
听对话和问题,选择正确答案。
每小题读两遍。
(5分,每题1分)听一段对话,回答11-12小题,每段对话读两遍。
11. When did the man call Sam?A. One hour ago.B. Half an hour ago.C. Twenty minutes ago.12. How will Sam come here?A. By bus.B. By taxi.C. By subway.听一段对话,回答13-15小题,每段对话读两遍。
2024届河北省衡水十三中高考模拟最后十套:数学试题(一)考前提分仿真卷注意事项: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,再选涂其它答案标号。
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.考试结束后,将本试卷和答题卡一并交回。
一、选择题:本题共12小题,每小题5分,共60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.将一张边长为12cm 的纸片按如图(1)所示阴影部分裁去四个全等的等腰三角形,将余下部分沿虚线折叠并拼成一个有底的正四棱锥模型,如图(2)放置,如果正四棱锥的主视图是正三角形,如图(3)所示,则正四棱锥的体积是( )A .33263cm B .36463cm C .33223cm D .36423cm 2.如图,将两个全等等腰直角三角形拼成一个平行四边形ABCD ,将平行四边形ABCD 沿对角线BD 折起,使平面ABD ⊥平面BCD ,则直线AC 与BD 所成角余弦值为( )A .23B 6C 3D .133.为得到函数πcos 23y x ⎛⎫=+⎪⎝⎭的图像,只需将函数sin 2y x =的图像( ) A .向右平移5π6个长度单位 B .向右平移5π12个长度单位 C .向左平移5π6个长度单位D .向左平移5π12个长度单位4.已知函数()2943,02log 9,0x x x f x x x ⎧+≤=⎨+->⎩,则函数()()y f f x =的零点所在区间为( ) A .73,2⎛⎫ ⎪⎝⎭B .()1,0-C .7,42⎛⎫ ⎪⎝⎭D .()4,55.一个几何体的三视图如图所示,则该几何体的表面积为( )A .48122+B .60122+C .72122+D .846.若x ,y 满足约束条件103020x y x y x +-≤⎧⎪-+≤⎨⎪+≥⎩,则22x y +的最大值是( )A .92B .322C .13D .137.如图所示,直三棱柱的高为4,底面边长分别是5,12,13,当球与上底面三条棱都相切时球心到下底面距离为8,则球的体积为 ( )A .B .C .D .8.已知m ∈R ,复数113z i =+,22z m i =+,且12z z ⋅为实数,则m =( ) A .23-B .23C .3D .-39.某歌手大赛进行电视直播,比赛现场有6名特约嘉宾给每位参赛选手评分,场内外的观众可以通过网络平台给每位参赛选手评分.某选手参加比赛后,现场嘉宾的评分情况如下表,场内外共有数万名观众参与了评分,组织方将观众评分按照[)70,80,[)80,90,[]90,100分组,绘成频率分布直方图如下: 嘉宾 A BC D EF评分969596 89 9798嘉宾评分的平均数为1x ,场内外的观众评分的平均数为2x ,所有嘉宾与场内外的观众评分的平均数为x ,则下列选项正确的是( ) A .122x x x +=B .122x x x +>C .122x x x +<D .12122x x x x x +>>>10.已知(cos ,sin )a αα=,()cos(),sin()b αα=--,那么0a b =是()4k k Z παπ=+∈的( )A .充分不必要条件B .必要不充分条件C .充要条件D .既不充分也不必要条件11.要得到函数312y x π⎛⎫=- ⎪⎝⎭的图象,只需将函数323y x π⎛⎫=- ⎪⎝⎭图象上所有点的横坐标( )A .伸长到原来的2倍(纵坐标不变),再将得到的图象向右平移4π个单位长度 B .伸长到原来的2倍(纵坐标不变),再将得到的图像向左平移4π个单位长度 C .缩短到原来的12倍(纵坐标不变),再将得到的图象向左平移524π个单位长度 D .缩短到原来的12倍(纵坐标不变),再将得到的图象向右平移1124π个单位长度12.已知双曲线()2222:10,0x y C a b a b-=>>的实轴长为2,离心率为2,1F 、2F 分别为双曲线C 的左、右焦点,点P 在双曲线C 上运动,若12F PF △为锐角三角形,则12PF PF +的取值范围是( )A .()27,8B .()25,7C .()25,8D .()27,7二、填空题:本题共4小题,每小题5分,共20分。
2024届山东济宁十三中中考物理全真模拟试卷注意事项:1.答卷前,考生务必将自己的姓名、准考证号、考场号和座位号填写在试题卷和答题卡上。
用2B铅笔将试卷类型(B)填涂在答题卡相应位置上。
将条形码粘贴在答题卡右上角"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。
答案不能答在试题卷上。
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,然后再写上新答案;不准使用铅笔和涂改液。
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考试结束后,请将本试卷和答题卡一并交回。
一、单选题(本大题共10小题,共30分)1.如图所示,几个同学在只有电流表或电压表时,利用一个已知阻值的电阻R0,设计了下面四个测量未知电阻R X阻值的电路,其中不可行的是A.B.C.D.2.为了揭示大自然的奥秘,无数科学家进行了不懈的探索.下列说法错误的是A.汤姆生发现了电子,从而揭示了原子是可以再分的B.卢瑟福最早提出了原子的核式结构模型C.近代科学家提出质子和中子都是由被称为夸克的更小粒子组成的D.组成大自然的天体和微观粒子都在不停地运动,其中太阳是宇宙真正的中心3.人们的生活离不开工具,如图所示的工具在正常使用的过程中,属于费力杠杆的是A.羊角锤B.面包夹C.核桃夹D.瓶起子4.如图甲所示是“探究不同物质吸热升温的现象”实验装置两个相同的易拉罐中分别装有质量和初温都相同的a、b两种液体,用相同的装置加热,根据记录的实验数据绘制的温度与时间的关系图象如图乙所示,下列说法中正确的是()A.组装器材时,先固定上面铁圈的高度B.升高相同温度,a液体吸收的热量更多C.a液体的比热容小于b液体的比热容D.不添加器材,利用本实验装置还可以比较质量相等的不同燃料燃烧时放出的热量5.鲁迅的《社戏》中有这样的描写:“黛黑的起伏的连山,仿佛是踊跃的铁的兽脊似的,都远远的向船尾跑去了…”其中“山…向船尾跑去了”所选的参照物是A.山B.船C.兽脊D.河岸6.下列测量工具在使用时不用调零的是A.直流电压表B.实验用温度计C.弹簧测力计D.直流电流表7.某凸透镜的焦距是10cm,当物体沿主光轴从距透镜30cm处向透镜移动时,则下列叙述凸透镜所成像的变化情况中,正确的是()A.像始终变大B.像始终变小C.像先变大后变小D.像先变小后变大8.“安全用电,珍惜生命”是每个公民应有的意识.下列关于家庭电路说法正确的是A.家电路起火时,应先用水扑灭,然后再断开电路B.空气开关跳闸,一定是家庭电路出现短路导致的C.当有人触电时,漏电保护器会迅速切断电路D.家中多个大功率用电器,应接在同一插线板上使用9.如图所示,拉力F=125N,在10s内将重物匀速提升2m,滑轮组的机械效率是80%.则下列说法正确的是()A.绳子自由端移动距离为6m B.物体重是375NC.拉力F做的功是250JD.拉力F的功率为25W10.关于原子及粒子的带电情况,下列说法中正确的是A.质子带正电,中子不带电B.质子带负电,中子不带电C.原子带负电,原子核带正电D.电子带负电,中子带正电二、多选题(本大题共3小题,共12分)11.在探究“凸透镜成像规律”的实验中,当蜡烛、凸透镜及光屏的相对位置如图所示时,恰能在光屏上得到一清晰的像;若保持透镜位置不变,将蜡烛和光屏的位置对换,发现在光屏上仍能成一清晰的像,对于此时像的性质判断正确的是()A.一定是缩小的像B.一定是放大的像C.一定是倒立的像D.一定是正立的像12.下列说法中正确的是()A.液体的沸点随液面上方的气压增大而降低B.温度升高越多的物体,吸收的热量越多C.在四冲程内燃机中,做功冲程的功能是将内能转化为机械能D.温度低于0℃的室外,仍有水蒸气存在13.如图甲所示,小球从某高度处由静止下落到竖直放置的轻弹簧上并压缩弹簧.从小球接触弹簧开始直至将弹簧压缩到最短的过程中,得到小球的速度v和弹簧被压缩的长度△1之间关系如图乙所示,其中b为曲线最高点.不计空气阻力,弹簧在整个过程中始终发生弹性形变.则下列说法不正确的是()A.小球在b点时重力等于弹力B.小球接触弹簧后动能就开始减小C.在运动过程中小球的机械能不守恒D.小球在最低点时,速度为零,处于平衡状态三、填空题(本大题共5小题,共10分)14.物体A沿着斜面匀速下滑,在图1中,_____为物体A所受重力的示意图(选填“G1”、“G2”或“G3”)。
u p2012—2013淮北市九年级“五校”联考模拟1数学答案一、选择题(本题共10小题,每小题4分,共40分)I、 C 2、C 3、D 4、A 5、D 6、A 7、D 8、B 9、B 10、C二、填空题(本题共4小题,每小题5分,共20分)II、8X10" ;12、<;13、25°;14、①②三、(本题共2小题,每小题8分,满分16分)15、解:原式=舲—2 + 1 + 2—馆...................... 4分=1 .............................. 8 分16、解:-1)? - 2x(1 - %) = 0(% -1)2 + 2x(% -1) = 0 ..........................4 分(% - l)(3x -1) = 0 ..........................6 分四、(本题共2小题,每小题8分,满分16分)17、(1) 64; 15 .............................. 2 分(每空1 分)(2) (n-l)2+l或1?-2" + 1;n2; 2n-l ....................................... 8分(每空2 分)18、(1)图略; ............... 2 分;Ai (-1, 1) ..................................... 4 分(2)图略;............... 6 分;A2 (6, -1) ..................................... 8 分五、(本题共2小题,每小题10分,满分20分)19、解:如图,过点A作AE丄CD于点E,根据题意,ZCAE = 45° , ZDAE = 30°••/ 丄BD , CD _LBD ,四边形ABDE为矩形.DE = AB = 123 .DF 在RtAADE 中,tan ZDAE=——,AE施=DE=旦=旱= 123能.tan ZDAE tan 30° V3在RtAACE 中,由ZCAE = 45° , 得CE = AE =\23迟.:.CD = CE + DE = 123(^3 +1) « 335.8 .............................. 9 分答:乙楼CD的高度为335.8m .................. 10分20、解:(1) a = 18 ................ ......................................................... 2 分(2)补充后的频数分布直方图如下所示: ...... 6分10分(3)不合格的学生数为: —x750 = 210人 ............................ 10分 50六、(本题满分12分)21、解:(1)批发购进乌鱼所需总金额y (元)与进货量x (千克)之间的函数关系式:y=26x(20WxW40)y=24x(x>40) ......................................................... 4 分(2)设该经销商购进乌鱼x 千克,则购进草鱼(75-x)千克,所需进货费用为w元.由题意得:90% X (75-x)+96%x294%X75.解得x$50 ......................................................... 8 分由题意得 w=8 (75~x ) +24x=16x+600V16>0, Aw 的值随x 的增大而增大..•.当 x=50 时,75-x=25, W 最小=1400 (元)答:该经销商应购进草鱼25千克,乌鱼50千克,才能使进货费用最低,最低费用为1400 兀.七、(本题满分.12分)•22、解:(1) BD=MF, BD 丄MF. ....................延长FM 交BD 于点N,由题意得:ZXBAD 竺ZXMAF..・.BD=MF, ZADB=ZAFM.又 V ZDMN=ZAMF,ZADB+ ZDMN= ZAFM+ ZAMF=90 ° ,.•.ZDNM=90° , .'.BD 丄MF. ............................(2) 0的度数为60。
2013年济宁市高三模拟考试基本能力试题本试卷分两部分,共16页。
满分100分。
考试用时l20分钟。
考试结束后,将本试卷和答题卡一并交回。
注意事项:1.答题前,考生务必用0.5毫米黑色签字笔将白己的姓名、座号、考生号、县区和科类填写在答题卡和试卷规定的位置上。
2.每小题选出答案后,用2B铅笔将答题卡上对应的答案标号涂黑。
如需改动,用橡皮擦干净后,再选涂其他答案标号。
不涂答题卡,只答在试卷上不得分。
第一部分共70题,每题l分,共70分。
在每题给出的四个选项中,只有—个选项最符合题目要求:1.鱼咬尾,是指前一句旋律的结束音和下一句旋律的第一个音相同的结构,也叫衔尾式、接龙式,是中国传统音乐常用的结构形式。
民歌《孟姜女》运用了鱼咬尾的创作方法。
下面是《孟姜女》谱例片段,请选择正确的音符填入括号内2.追思圣贤,千年礼乐归东鲁;感怀历史,万古衣冠拜素王。
在每年中国曲阜国际孔子文化节上,乐师们在演奏祭孔古乐时所使用的乐器可能有A.古筝管风琴埙编钟B.编钟编磐笙埙C.古琴琵琶风笛编磐D.编钟编磐箫马林巴琴3.一方水土养一方人,不同国家和民族的音乐都有着独特的风格。
五声调式起源于中华民族。
曲调中的音主要由五个音构成,它是我国民歌在调式上的重要特征,也可以称为民族五声调式。
以下谱例,属于中国民族五声调式音乐作品的是4.正月十五闹元宵,舞龙灯、跑旱船、耍狮子、踩高跷、锣鼓喧天、热闹非凡。
下列节奏谱例适合作为表演队伍鼓点的是5.“音乐治疗”作为新的学科门类已在国内外广泛开展并取得了许多显著的研究成果,其主要方法是在治疗中利用各种音乐表现要素对人们情绪或心理产生的影响,帮助被治疗者达到健康目的。
下列作品最能够给人带来欢乐情绪的是A.阿炳《二泉映月》B.勋伯格《五首管弦乐作品》C.古曲《梅花三弄》D.广东音乐《雨打芭蕉》6.2013年央视春节联欢晚会《指尖与足尖》的乐曲改编自经典圆舞曲《春之声》,前奏部分古典唯美,后半段则加入了更多炫技的元素。
2013九年级第一次模拟考试联考试题数 学2012年上学期九年级第一次模考数学试卷第1页共4页 2012年上学期九年级第一次模考数学试卷第2页共4页………………………………………………………………密……………………………………封……………………………………线……………………………………………………注意事项:1.本学科试卷共三大题,满分120分,时量120分钟。
1.答题前,请按要求在答题卡上填写好自己的姓名、就读学校和准考证号。
2.答题时,切记答案要填在答题卡上,答在试题卷上的答案无效。
3.考试结束后,请将试题卷和答题卡都交给监考老师。
一、选择题(本大题共8道小题,每小题3分,共24分,在每道小题给出的四个选项中,选出符合题目要求的一项)1、无理数的相反数是( )A、 B、 C、 D、2、下列运算正确的是( )A、 B、 C、 D、3、已知一元二次方程 x2 + x ─ 1 = 0,下列判断正确的是( )A、该方程有两个相等的实数根B、该方程有两个不相等的实数根C、该方程无实数根D、该方程根的情况不确定4、下列命题中是真命题的是( )A、对角线互相垂直且相等的四边形是正方形B、两边相等的平行四边形是菱形C、两条对角线相等的平行四边形是矩形D、有两边和一角对应相等的两个三角形全等5、如图,把其中的一个小正方形看作基本图形,这个图形中不含的变换是( )月用水量(吨)45689户数45731A.相似(相似比不为1)B.平移C. 对称D.旋转第六题图6、如图,等腰△ ABC中,AB=AC,∠A=20°。
线段AB的垂直平分线交AB于D,交AC于E,连接BE,则∠CBE等于( )A、80°B、70°C、50°D、60°7、2010年因干旱影响,凉山州政府鼓励居民节约用水,为了解居民用水情况,在某小区随机抽查了20户家庭的月用水量,结果如下表:则关于这20户家庭的月用水量,下列说法错误的是A.中位数是6吨 B.平均数是5.8吨 C.众数是6吨 D.极差是4吨8、函数在同一直角坐标系内的图象大致是( )二、填空题(每小题3分,共24分)9、已知一粒大米的质量约为0.00002165千克,这个数用科学记数法表示为 (保留三位有效数字)10、平行四边形中,、是两条对角线,现从以下四个关系式 ① ,②,③ ,④ 中、任取一个作为条件,即可推出平行四边形是矩形的概率为 。
一、选择题1.I want to be an astronaut in the future so that I can do ________ research in the space station. A.funny B.reusableC.scientific D.unexpected2.It’s windy. Let’s stay at home ______ going out.A.thanks to B.instead of C.as well as D.by the end of3.We will help to ________ the city.A.clean out B.clean upC.clean on D.cleaned out4.In February, Chinese tech company Huawei____Mate X,afoldable(可折叠的)5G mobile phone.A.is introducing B.introduced C.introduces D.was introduced 5.It's 9:00 in the morning now. The students from Grade Nine an important exam.A.have B.had C.are having6.The environment in our town is getting worse and worse,so plenty of trees ____________ . A.are planting B.should be planted C.should plant D.will plant 7.Mario hopes his English, so he keeps practicing it every day.A.to improve B.improve C.improving D.improves 8.Some volunteers are going to the central park. Let's join them.A.put up B.clean up C.look up D.give up 9.Congratulations________ all the winners ________ your excellent grades!A.to;on B.to;for C.on;on D.on;for10.______the man who gave me an inexhaustible(消耗不尽)supply of money so that I could ______ my trip.A.Thanks for ; pay for B.Thank to ; affordC.Thank for ; afford D.Thanks to ; afford11.________our dreams, we are not supposed to give up when we have difficulties.A.To achieving B.Achieve in C.To achieve D.Achieve12.—No one is stronger than the of nature.—Yeah, if we don’t follow the rules of the ecosystem, we would live in a world with disasters(灾难) ________ all the time.A.force, happened B.power, happen C.forces, happening 13.Noise is harmful ______ our hearing.A.to B.for C.on14.—Online reading has many _________.For example, it's possible for us to read at any time.—I agree with you, but it is bad for our eyes.A.agreements B.project C.advantage D.advantages 15.— hero in this story is ugly duck.A.A; the B.The; a C.The; an D.A; an16.—I am trying to get to the bottom of why Lucy left the party without saying goodbye.—Great! I also want to know the reason.A.arrive at the bottom B.find out the bottom C.find out the truth D.leave the bottom 17.We mustn't drop litter everywhere, Look at Sign !A.B.C.D.18.—Lucy, when you leave the room, please ____the light. —OK, Mom.A.put off B.turn off C.turn up19.Who is better ______ playing basketball, you or your brother?A.at B.in C.on20.Which of the following shows the new transportation means that Jinan is building? A.B.C.D.【参考答案】***试卷处理标记,请不要删除一、选择题1.C解析:C【详解】句意:我想在未来成为一名宇航员,是为了我能在太空站做科学研究。
11.W : Do you know James ? He is in your class .M : Certainly , in fact , he was the first person I got to know in any class . I still remember the look on his face when he showed up late on the first day of school .Q : Why did the man remember James so well ?12.M : Oh , sb , you never seem to be nervous . But why were you so nervous just now when the professor called on you ?W : You know , I didn't enter my house until I found my key at 11 o'clock last night . So I didn't have enough time to preview my lessons .Q : Why did the woman feel nervous ?13.W : I'm afraid it will take at least three weeks to finish all of the assignments . But it's almost the end of the semester .M : Fortunately the final test will be held in five weeks .Q : What do the speakers say about the test ?14.M : This room is so crowded . I can hardly hear and I can't see a thing .W : I don't understand why they didn't have the show in a larger theater .Q : What are they complaining about ?15.M : I have been practicing that song all week , but I'm still afraid of standing in front of such a large audience .W : Just act as if there are all your friends and you will be fine .Q : What dose the woman suggest the man do ?16.M : Thank you for your help for the assistants, otherwise I surely have missed it . The place is so out of the way .W : It was a pleasure meeting you, goodbye .Q : Why did the man thank the woman ?17.W : Professor Smith said that the final exam will cover all of the 12 units .M : Really ? I thought it only included the first two thirds. Then I must spend the May Day to go over the rest .Q : How many more units must the man review ?18.M : I am sorry , Madam . The train is behind schedule . Take a seat and I will inform you as soon as we know something definite .W : Thank you . I will just sit here and read the magazine in the meantime .Q : What do we learn from the conversation ?Conversation 1W : Hey , Dave . I have not seen you for ages, how have you been ?M : Oh , I'm doing OK , but school has been really busy these days and I have not had time to relax .W : By the way , what's your major anyway?M : Hotel Management .W : Well , what do you want to do once you graduate ?M : Er , I have not decided for sure . But I think I'd like to work for a hotel or travel agency in these area . How about you ?W : Well , when I first started college , I wanted to major in French . But I realized that I might have a hard time finding a job using the language . So I changed my major to computer science. With the right skills, landing a job in the computer industry shouldn't be as difficult .M : So do you have a part-time job to support yourself through school ?W : Well, fortunately , I received the four-year academic scholarship that pays for all of my tuition and books .M : Wow, that's great .W : How about you ? Are you working your way through school?M : Yes , I work 3 times a week at a restaurant near campus .W : Oh , what do you do there ?M : I am a cook .W : How do you like your job ?M : It's OK , the other workers are friendly and the paid isn't bad .Q19 : What does the man want to do after he graduates ?Q20 : What is the woman majoring in ?Q21 : How does the woman pay for college ?Q22 : Where does the man work part time ?Conversation 2M : Professor Day. May I see you for a minute?W : Sure. Come on in. What’s the matter?M : I’ve got a problem. I need your technical writing class, so I went early to the registration area, but by the time I got to the front of the line, it was closed. See, my advisor signed my course request and everything.W : That’s a big class already. If it is closed, that means I have 50 students in it now. M : I’m not surprised. It’s a really good class and many students want to attend it.W : Can’t you take it next year? We offer it every fall.M : Well, that’s the problem. I’m supposed to be graduating this spring. But, of course, I can’t graduate without your class.W : I see. In that case, I’ll sign for you. It looks like they will get you in a fter I take this form back to the registration area.M : Thanks, Professor Day. I really appreciate this!Questions 23 to 25 are based on the conversation you have just heard.23. What is the problem of the student?24. What do we know about this course?25. What does Professor Day decide to do?3.Lisa was running late. Lisa, 25, had a lot to do at work, plus visitors on the way: her parents were coming in for Thanksgiving from her hometown. But as she hurried down the subway stairs, she started to feel uncomfortably warm. By the time she got to the platform, Lisa felt weak and tired—maybe it hadn’t been a good idea to give blood the night before, she thought. She rested herself against a post close to the tracks.Several yards away, Frank, 43, and his girlfriend, Jennifer, found a spot close to where the front of the train would stop. They were deep in discussion about a house they were thinking of buying.But when he heard the scream, followed by someone yelling, “Oh, my God, she fell in!” Frank didn’t hesitate. He jumped down to the tracks and ran some 40 feet toward the body lying on the rails. “No! Not you! ”his girlfriend screamed after him.She was right to be alarmed. By the time Frank reached Lisa, he could feel the tracks shaking and see the light coming. The train was about 20 seconds from the station.It was hard to lift her. She was just out. But he managed to raise her the four feet to the platform so that bystanders could hold her by the grins and drag her away from the edge. That was where Lisa briefly regained consciousness, felt herself being pulled along the ground, and saw someone else holding her purse.Lisa thought she’d been robbed. A woman held her hand and a man gave his shirt to help stop the blood pouring from her head. And she tried to talk but she couldn’t, and that was when she realized how much pain she was in.Police and fire officials soon arrived, and Frank told the story to an officer. Jennifer said her boyfriend was calm on their 40一minute train ride downtown—just as he had been seconds after the rescue, which made her think about her reaction at the time. “I saw the train coming and I was thinking he was going to die,” she explained.Q26 : What was the most probable cause for Lisa’s weakness?(D)A. She had run a long way.B. She felt hot in the subway.C. She had done a 1ot of work.D. She had donated blood the night before.Q27 :How did Frank save Lisa?(A)A. By lifting her to the platform.B. By helping her rise to her feet.C. By pulling her along the ground.D. By dragging her away from the edge.Q28 : When did Lisa become conscious again?(B)A. When the train was leaving.B. After she was back on the platform.C. After the police and fire officials came.D. When a man was cleaning the blood from her head.Q29 : Why did Jennifer try to stop her boyfriend?(D)A. Because they would miss their train.B. Because he didn’t see the train coming.C. Because she was sure Lisa was hard to lift.D. Because she was afraid the train would kill him.4.It's only 4 hours flying time from Sydney, but a world away. What better place to rest than a country where the only place people hurry is on the football field and things are done in "Fiji time"?Viti Lev -- Great Fiji -- is the largest island. Here you'll find the capital Suva and the international airport at Nadi. Vatoa, on the other hand, is a tiny island in the farthest part of Hiji. Then there are 331 other islands, many of them with places to stay.With less than a million people living on islands, you'll never feel crowded. And with a climate that changes only for five degrees between seasons, there's never a bad time to come.From cities to villages, from mountains to beaches, from water sports to wooden artworks, Fiji can give you more adventures and special experiences than you could find almost any where in the world.Whenever you come, wherever you go, you're sure to see some unforgettable events. From war dances to religious songs. From market days to religious days. It's not just staged for tourists; it's still a part of everyday life in Fiji. And any one of us can enjoy Fiji's spirit by being part of the traditional sharing of yaqona — a drink made from the root of a Fiji plant.So why not join us for the experience of a lifetime?Q30 : Where is the international airport of Fiji? (D)A. In SuvaB. In SydneyC. On the island of VatoaD. On the island of Viti LevuQ31 : What does the text tell us about Fijian people? (B)A. They invented "Fiji time" for visitorsB. They stick to a traditional way of lifeC. They like to travel from place to placeD. They love taking adventures abroadQ32 : One of the things that make Fiji a tourist attraction is ___(B)_____.A. its comfortable hotelsB. its good weather all year roundC. its exciting football matchesD. its religious beliefs5.When I was a child,I often dreamed of the time when I could leave home and escape to the city.We lived on a farm and,in the winter especially,we were quite cut off from the outside world.As soon as I left school, I packed my bags and moved to the capital. However,I soon discovered that city life has its problems too.One big disadvantage is money—it costs so much to go out,not to mention basics like food and housing. Another disadvantage is pollution.I suffer from asthma(哮喘),and at times the air is so bad that I am afraid to go outside. Then there is the problem of traveling round. Although I have a car,I seldom use it because of the traffic jams.One choice is to go by bicycle,but that can be quite dangerous.Of course there are advantages.First,there is so much to do in the city,whatever your tastes in culture or entertainment(娱乐活动).Besides,there are wonderful jobs and greater chances of moving to a more important job or position.Finally,if you like shopping,the variety of goods is very surprising—and,what is more,shops are often only a short walk away.Is life better then, in the city? Perhaps it is,when you are in your teens(十几岁)or twenties.However,as you get older,and especially if you have small children,the peace of the countryside may seem preferable. I certainly hope to move back there soon.Q33 : What was the writer always thinking about when he was a child? (C)A.Staying on the farm.B.Moving to the countryside.C.Leaving home for the city.D.Running away from the school.Q34 : Which of the following is true about the writer?(D)A.He is very old now.B.He is in good health.C.He prefers driving a car.D.He lives in the city now.Q35 : What does the speaker try to do in the passage ? (A)A.express his opinions about way of lifeB.describe his life in the countrysideC.show an interest in the outside worldD.persuade the reader to live in the cityThe concept of student that exchange between countries is not a new one . It is a common from ----- in many European countries and the United States of America . In fact , most of the leading universities have made student exchange programs an necessary part of their system . This program is based on the philosophy that a group of students coming from varieties parts of the world to a certain university for a year or even a few months can bring about a positive change in the university . Chasing its route back to World War Two , student exchanges quickly became popular as they aimed to help increase -----understanding and----- of other cultures , as well as improving their language skills and ----- their social ----- . The train is also catching up fast in ----- and a number of organizations are involved in sending students abroad to varieties universities . In these regard , I was selected for this program in 2007 . According to which I was to study , the spring 2008 ----- at the university at ----- . As it is expected , the experience was amazingly and rich in , improved from ---------- . Education in America is a ----- of academics and a hold lot of other things . However , it is not all fun and games for exchange students as the courses offer are no piece of cake . But to make things interesting , Hawaii choose of majors is offered which makes it a little easier for students since then they tend to ----- for subjects that they find easy or are interested in .The concept of student exchange between countries is not a new one. It is common (36) in many European countries and the United States of America. In fact, most of the (37) universities have made student exchange programs a necessary part of their system. This program is based on the (38) that a group of students coming from (39) parts of the world to a certain university for a year or even a few months can bring about a (40)change in the university. (41)its root back to World War Ⅱstudent exchanges quickly became popular as they aimed to help increase t he participants’ understanding and (42)of other cultures, as well as improving their language skills and (43)their social horizons. (44) . In this regard, I was selected for this program in 2007, according to which I was to study the Spring 2008 semester at the University of Montana. (45) .Education in America is a blend of academics and a whole lot of other things. (46) .But to make things interesting a wide, choice of majors is offered which makes it a little easier for students since then they tend to opt for subjects that they find easy or are interested in.36 phenomena37 leading38 philosophy39 various40 positive41 Tracing42 tolerance43 broadening44 The trend is also catching up fast in Pakistan and a number of organizations are involved in sending the students abroad to various universities.45 As expected , the experience was amazingly enriching and proved tremendously fruitful.46 However, it is not all fun and games for exchange students as the courses offered are no piece of cake.。