2010-2011 八年级 第一学期期末模拟试题 松岗中学 2010.12
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2010—2011学年八年级上学期期末考试数学试题参考答案及评分标准一、选择题(每小题3分,共24分)B B D B D D B B二、填空题(每小题3分,共18分)1、21-,2-;2、61;3、224x y -;4、>2,=2,<2;5、9;6、±6。
三、解答题(每小题5分,共计25分)1、设b ax y += 则 ⎩⎨⎧-=+-=+122b a b a ……(3分)∴⎩⎨⎧==11b a (4分)1+=x y 即为所求 ……(5分)2、解:原式≈10-9.894.8314.33.023≈=-++……(6分)3、解:y x y y y x y x y x 2)](2)())([(2÷-----+=y xy y y xy x y x 2]22)2()[(22222÷+-+---=y xy y y xy x y x 2)222(22222÷+--+--……(3分)=y y xy 2)44(2÷-=y x 22-=2)(y x -……(4分)∵2011-=-x y ∴ 原式=2)(y x -=4022 ……(5分)4、证明:连结CD (1分) ∵ AD ⊥AC BC ⊥BD∴∠A =∠B =90°……(2分) 又 AC=BD , CD =DC∴Rt △ACD ≌Rt △BDC (HL)(4分)∴ AD =BC ……(5分)5、解:∵2)5(12±=-m 3313=--n m ……(2分)∴13=m 11=n 8186=-+n m ……(4分)∴86-+n m 的算术平方根为9. ……(5分)四、解答题(每小题6分 共计18分)1、证明:∵ OP 平分∠AOB ,PM ⊥OA 于点M ,PN ⊥OB 于点N∴ PM =PN (角平分线的性质) ……(3分)又OP =OP ∴ Rt △OMP ≌Rt △ONP ∴ OM =ON ……(5分)∴ MQ =NQ (等腰三角形三线合一) ……(6分)2、证明:∵ BE ⊥AC, ∴∠EBC =∠DAC =90°……(1分)又 ∠DCE =90°∠1+∠2=90°在Rt △ADC 中∠1+∠D =90°∴∠2=∠D ……(2分)在△ADC 和△BCE 中 ⎪⎩⎪⎨⎧=∠=∠∠=∠EC DC D CBE DAC 2∴△ADC ≌△BCE (AAS) …(4分) ∴ AD =BC AC =BE …(5分) 而 AC =AB+BC =AB+AD ∴ AB+AD =BE ……(6分)3、解:图中有五对全等三角形,它们是△ABD ≌△ACD △ADF ≌△AEF△BDF ≌△BEF △ABD ≌△ABE △ACD ≌△ABE ……(3分)求证△ABD ≌△ACD∵ AB =AC ∴△ABC 是等腰三角形……(4分)又AD ⊥BC 于点D ∴∠ADB =∠ADC =90°且AD =AD ……(5分)∴Rt △ABD ≌Rt △ADC ……(6分)五、解答题(1小题7分,2小题8分,共计15分)1、解:(1)A 2(4,0)B 2(5,0)C 2(5,2) ……(4.5分) (2)P 1(a ,0),P 2(6-a ,0) PP 2=6 ……(7分)2、解:如图,设一次函数为b ax y += (1)则当时间在0点~5点 时 一次函数满足⎩⎨⎧-=+=252b a b ∴⎪⎩⎪⎨⎧=-=254b a ……(3分) 此时气温随时间变化的的关系式为254+-=x y 令 0=y ,则25=x ……(4分) (2)则当时间在5点~9点 时一次函数满足 ⎩⎨⎧=+-=+6925b a b a ∴⎩⎨⎧-==122b a ……(6分)此时气温随时间变化的的关系式为122-=x y 令 0=y ,则6=x ……(7分) ∵327256>=- 说明气温在0℃以下持续超过3小时 ∴ 应采取预防措施。
2010----2011学年度第一学期期末调研考试八年级物理试卷考试时间:90分钟 试卷满分:100分一、选择题:下列各小题均有四个选项,其中只有一个符合题意。
请将该选项前的字母填在答题卡内。
(本大题共20小题,每小题1.5分,共30分) 1、关于声现象,下列说法正确的是( )A 、在真空中听不到声音是因为声音只能够在空气中传播B 、人说话是靠舌头振动发声的C 、只要物体在振动,人耳就能听到声音D 、一切发声的物体都在振动2、声音在空气中传播,在传播过程中会发生变化的物理量是( ) A 、音调 B 、响度 C 、音色 D 、传播速度3、关于光的现象,下列说法正确的是( )A 、我们平日看到的水中之物比实际浅,就是因为光的折射造成的B 、雨后的天空,可以看到彩虹,是光的反射造成的C 、比平面镜大的物体不能在平面镜中成像D 、我们看到红颜色的物体,是因为光照在这个物体上,把红光都吸收了,所以是红色。
4、如图所示,用手电筒对着平面镜中的像A /B /照射时,会发现像比原来亮多了,这是因为( )A 、光照到像上所以像变亮B 、镜子比原来亮,所以像也比原来亮C 、光照到镜子上发生反射,使物体变亮D 、光照射像后,人的感觉不同5、下列各图中,哪个能正确表示光从空气斜射入水中的情况( )6、为了防止火花点燃汽油引起火灾,我市很多加油站都有这样的提示:“请熄火加油”、“请不要使用手机”等。
原因是常温下汽油容易()A、液化B、汽化C、凝华D、升华7、如图是有关近视眼、远视眼及其矫正的示意图,其中表示近视眼矫正的是()8、如图所示,当开关S闭合时,两只小灯泡都不能发光的电路是()9、关于电路的下列说法中错误的是()A、电源是提供电能的装置B、只有电路闭合时,电路中才有电流C、电源的外部,电流沿着“正极→用电器→负极”的方向流动D、电路中的开关属于用电器10、控制噪声是环境保护的主要项目之一,在一些主要干道旁设置噪声监测设备.下列哪种措施不能减弱噪声()A、市区禁止机动车鸣笛B、减少二氧化碳气体的排放C、摩托车的排气管上装有消声器D、大街小巷两旁种草植树11、下列物态变化属于液化现象的是()A、春天,冰封的湖面开始解冻B、夏天,草丛中出现露水C、深秋,屋顶瓦上结了一层霜D、冬天,冰冻的衣服逐渐变干12、下列现象中,不可能发生的是()A、80℃的水正在沸腾B、在北方较冷的地区,通常情况下纯净的冰水混合物的温度可以达到-1℃C、冰不需要熔化成水就能直接变成蒸气D、潮湿的衣服在0℃的气温下变干了13、在探究凸透镜成像规律的实验中,当烛焰、凸透镜、光屏处于如图所示的位置时,恰能在光屏上得到一个清晰的像。
2010---2011学年度上期末八年级摸底考试(笔试部分)第二部分:基础知识运用(共两节;满分30分)二.单项填空(共20小题;每小题1分,满分20分)( ) 21. ______ he is in reading room now.A. MaybeB. May beC. May( ) 22.The old man ____ in this house until he ____ to another city.A. will live; movesB. won’t live; movesC. is live; moves ( ) 23. The boys and girls played tennis _____ on the playground.A. happilyB. happierC. more happy( ) 24. Her mother is ill and she is looking ____ her at home.A. afterB. atC. about( ) 25. Li Ming won a _____ prize.A. 500-dollarsB. 500 dollarsC. 500-dollar( ) 26. _______ meat do you want? - Two kilos.A. How manyB. How muchC. How long( ) 27. Do you know the people?Yes, they ______ English teachers in our school.A. are allB. both areC. are both( )28. There is _____ water in the glass. Can I get some?A. littleB. fewC. a little( ) 29. He is ill. I want to cook ______ for him to eat.A. anything differentB. different anythingC. something different ( ) 30. You'd better ______, a baby is sleeping over there.A. keep quietB. to keep quietC. keep quietly ( ) 31. Sorry, I forgot____a pen. May I use yours?A. buyB. to buyC. buying( ) 32. Do you know the boy____Da Ming?A. callB. calledC. calling( ) 33. My sister is ________than IA. many thinnerB. much thinnerC. a little thiner( ) 34. He often rides a bike to school,but I ____ to my school.A. by busB. on a busC. take a bus( ) 35. Could you _____ the windows? I feel a little hot.A. please not to closeB. please not closeC. not please close.( ) 36. Do you know _____ during the coming winter holiday?A. what will Tom do.B. what Tom doesC. what Tom will do ( ) 37. The teacher with his students____ to have a party tomorrow.A. are goingB. is goingC. to go( ) 38.-----It’s dark now. I can’t see anything.-----The light is behind the door, you can ______.A. turn it onB. turn on itC. open it( ) 39. Liu Xiang was born ____ the 13th of July ,1983 ,in Shanghai.A. inB. onC. at( ) 40. He stopped playing soccer _____ his sore back.A. because ofB. becauseC. though三.完形填空(共10小题;每小题1分,满分10分)Mr. White works in a middle school. He 1 English. He is friendly to his 2 and they also like him. He spends 3 time on his work. He often does some reading and writing. When he's 4 , he is also very busy with his work, so he can't help his wife to do any 5 . His wife is always angry with him.It's Saturday. Their daughter Kate is 6 her homework in her bedroom. Mrs. White finds her 7 is out. She hopes her daughter will say she's 8 than her husband. She gives an apple to Kate and asks, " 9 is cleverer, your father or I?"Can you guess what the girl's 10 is?“I'm the cleverest in my family!”Kate says without thinking.( ) 41. A. teaches B. watches C. studies( ) 42. A. friends B. students C. workers( ) 43. A. many B. little C. much( ) 44. A. at home B. in bed C. in the classroom ( ) 45. A. housework B. homework C. lessons( ) 46. A. making B. doing C. looking( ) 47. A. mother B. brother C. husband( ) 48. A. good B. best C. better( ) 49. A. Whose B. What C. Who( ) 50. A. answer B. play C. sing四:阅读理解(共10小题;每小题2分,满分20分)阅读下列短文,从每题所给的A、B、C三个选项中选出最佳答案。
深圳松岗中英文实验学校八年级上册期末数学模拟试卷及答案一、选择题1.在等式a 3•a 2•( )=a 11中,括号里填入的代数式应当是( )A .a 7B .a 8C .a 6D .a 3 2.下列各组中,没有公因式的一组是( ) A .ax -bx 与by -ayB .6xy -8x 2y 与-4x+3C .ab -ac 与ab -bcD .(a -b )3与(b -a )2y3.甲、乙两地相距360,km 新修的高速公路开通后,在甲、乙两地间行驶的长途客运车平均车速提高了50%,而从甲地到乙地的时间缩短了2,h 设原来的平均速度为/,xkm h 根据题意:下列所列方程中正确的是( )A .()3603602150%x x =++B .()3603602150%x x -=+C .360360250%x x -=D .360360250%x x-= 4.如图,将长方形ABCD 沿线段EF 折叠到''EB C F 的位置,若'105EFC ∠=︒,'DFC ∠的度数为( )A .20︒B .30C .40︒D .50︒5.下列式子中,运算结果为1x +的是 ( )A .211x x x x -⋅+B .2211x x x +++C .11x +D .111x x x +÷- 6.如图,∠BAD =∠CAE =90°,AB =AD ,AE =AC ,F 是CB 延长线上一点,AF ⊥CF ,垂足为F .下列结论:①∠ACF =45°;②四边形ABCD 的面积等于12AC 2;③CE =2AF ;④S △BCD =S △ABF +S △ADE ;其中正确的是( )A .①②B .②③C .①②③D .①②③④7.如图,点D ,E 在△ABC 的边BC 上,△ABD ≌△ACE ,其中B ,C 为对应顶点,D ,E 为对应顶点,下列结论不.一定成立的是( )A .AC=CDB .BE=CDC .∠ADE=∠AED D .∠BAE=∠CAD8.如图, 已知△ABE ≌△ACD ,∠1=∠2,∠B=∠C ,则下列等式不正确的是( )A .AB=ACB .BE=DC C .AD=DED .∠BAE= ∠CAD 9.若()22516x m x +-+是完全平方式,则m 的值是( )A .5B .9C .9或1D .5或1 10.下列运算正确的是( ) A .23522a a a ⋅= B .()22436m m = C .623m m m ÷=D .22(1)1x x +=+ 二、填空题11.已知等腰三角形的其中两边长分别为4,9,则这个等腰三角形的周长为_____________.12.如图,AB CD ,一副三角尺按如图所示放置,∠AEG =20度,则 HFD ∠为 ______________度.13.Rt △ABC 中,∠C 是直角,O 是角平分线的交点,AC=3,BC=4,AB=5,O 到三边的距离r=______.14.若2m a =,5n a =,则2m n a +=__________________.15.如图,CA ⊥BC,垂足为C,AC=2Cm,BC=6cm,射线BM ⊥BQ,垂足为B,动点P 从C 点出发以1cm/s 的速度沿射线CQ 运动,点N 为射线BM 上一动点,满足PN=AB,随着P 点运动而运动,当点P 运动_______秒时,△BCA 与点P 、N 、B 为顶点的三角形全等.(2个全等三角形不重合)16.如图,在△ABC 中,∠ABC =90°,AB =6,BC =4,P 是△ABC 的重心,连结BP ,CP ,则△BPC 的面积为_____.17.从A 沿北偏东60︒的方向行驶到B ,再从B 沿南偏西20︒方向行驶到C ,则ABC ∠=______.18.如图,在△ABC 中,AB=AC=8cm ,BC=5cm .D 、E 分别是AB 、AC 边上的点,将△ADE 沿直线DE 折叠,点A 落在点A ′的位置,点A ′在△ABC 的外部,则阴影部分图形的周长为________cm .19.当 x_____ 时,分2x x+式有意义. 20.若过点()()3,7,5M a N --、的直线与x 轴平行,则点M 关于y 轴的对称点的坐标是_________.三、解答题21.如图所示,△ABC 中,AB=BC ,DE ⊥AB 于点E ,DF ⊥BC 于点D ,交AC 于F . ⑴若∠AFD=155°,求∠EDF 的度数;⑵若点F 是AC 的中点,求证:∠CFD=12∠B .22.如图,AD ,AE 和AF 分别是ABC ∆的高、角平分线和中线.(1)对于下面的五个结论:①2BC BF =;②12CAE CAB ∠=∠;③BE CE =;④AD BC ⊥;⑤AFB AFC S S ∆∆=. 其中正确的是 (只填序号)(2)若66C ∠=︒,30ABC ∠=︒,求DAE ∠的度数.23.已知ABC ,80ABC ∠=︒,点E 在BC 边上,点D 是射线AB 上的 一个动点,将ABD △沿DE 折叠,使点B 落在点B '处,(1)如图1,若125ADB '∠=︒,求CEB '∠的度数;(2)如图2,试探究ADB '∠与CEB '∠的数量关系,并说明理由;(3)连接CB ',当//CB AB '时,直接写出CB E ∠'与ADB '∠的数量关系为 .24.已知:如图,在Rt ABC ∆中,90C ∠=︒,30A ∠=︒,(1)作B 的平分线BD ,交AC 于点D ;作AB 的中点E ;(要求:尺规作图,保留作图痕迹,不必写作法和证明)(2)连接DE ,求证:ADE BDE ∆≅∆.25.如图,∠ADB =∠ADC ,∠B =∠C .(1)求证:AB =AC ;(2)连接BC ,求证:AD ⊥BC .26.如图,在四边形ABCD 中,AD ∥BC ,E 为CD 的中点,连接AE 、BE ,延长AE 交BC 的延长线于点F .(1)求证:△DAE ≌△CFE ;(2)若AB =BC +AD ,求证:BE ⊥AF .27.如图,已知直线y =13x -+1与x 轴、y 轴分别交于点A 、B ,以线AB 为直角边在第一象限内作等腰Rt △ABC ,∠BAC =90o 、点P (x 、y )为线段BC 上一个动点(点P 不与B 、C 重合),设△OPA 的面积为S .(1)求点C 的坐标;(2)求S 关于x 的函数解析式,并写出x 的的取值范围;(3)△OPA 的面积能于92吗,如果能,求出此时点P 坐标,如果不能,说明理由. 28.如图,ABC ∆中,30A ∠=︒,70B ∠=︒,CE 平分ACB ∠,CD AB ⊥于D ,DF CE ⊥,求CDF ∠的度数.29.(探究)如图1,边长为a 的大正方形中有一个边长为b 的小正方形,把图1中的阴影部分拼成一个长方形(如图2所示),通过观察比较图2与图1中的阴影部分面积,可以得到乘法公式 .(用含a ,b 的等式表示)(应用)请应用这个公式完成下列各题:(1)已知4m 2=12+n 2,2m +n =4,则2m ﹣n 的值为 .(2)计算:20192﹣2020×2018.(拓展)计算:1002﹣992+982﹣972+…+42﹣32+22﹣12.30.在学习分式计算时有这样一道题:先化简1(1+)2x -÷22214x x x -+-,再选取一个你喜欢且合适的数代入求值.张明同学化简过程如下:解:1(1+)2x -÷22214x x x -+- =212x x -+-÷2(1)(2)(2)x x x -+-( ) =21(2)(2)2(1)x x x x x -+-⋅-- ( ) =21x x +- ( ) (1)在括号中直接填入每一步的主要依据或知识点;(2)如果你是张明同学,那么在选取你喜欢且合适的数进行求值时,你不能选取的数有__________.【参考答案】***试卷处理标记,请不要删除一、选择题1.C解析:C【分析】本题根据同底数幂的乘法法则计算32a a ,继而利用同底数幂除法运算法则求解本题.【详解】∵325a a a =,∴1156a a a ÷=;故括号里面的代数式应当是6a .故选:C .【点睛】本题考查同底数幂的运算法则,解题关键在于对乘除法则的熟练运用,其次注意计算仔细即可.2.C解析:C【解析】【分析】将每一组因式分解,找到公因式即可.【详解】解:A 、ax-bx=(a-b )x ,by-ay=(b-a )y ,有公因式(a-b ),故本选项错误;B 、6xy-8x 2y=2xy (3-4x )与-4x+3=-(4x-3)有公因式(4x-3),故本选项错误;C 、ab-ac=a (b-c )与ab-bc=b (a-c )没有公因式,故本选项正确;D 、(a-b )3x 与(b-a )2y 有公因式(a-b )2,故本选项错误.故选:C .【点睛】本题考查公因式,熟悉因式分解是解题关键.3.A解析:A【解析】【分析】设原来的平均速度为xkm/h ,则提速以后的平均速度为(1+50%)xkm/h ,根据提速以后时间缩短了2h ,列出方程即可.【详解】设原来的平均速度为xkm/h ,则提速以后的平均速度为(1+50%)xkm/h , 由题意得:()3603602150%x x=++. 故选:A .【点睛】本题考查了由实际问题抽象出分式方程,解答本题的关键是读懂题意,找出合适的等量关系,列出方程.解析:B【解析】【分析】由轴对称的性质可求出∠EFC 的度数,可由式子∠EFC+∠EFC'-180°直接求出∠DFC'的度数.【详解】解:由翻折知∠EFC=∠EFC'=105°,∴∠EFC+∠EFC'=210°,∴∠DFC'=∠EFC+∠EFC'-180°=210°-180°=30°.故选:B .【点睛】本题考查了翻折变化(轴对称)的性质及角的计算,解题关键是熟练掌握并能够灵活运用轴对称变换的性质等.5.B解析:B【解析】【分析】分别对每个选项进行化简,然后进行判断,即可得到答案.【详解】解:A 、21(1)(1)111x x x x x x x x x x -+-•=•=-++,故A 错误; B 、2221(1)111x x x x x x +++==+++,故B 正确; C 、111x x x++=,故C 错误; D 、21111(1)1x x x x x x x x++-÷=•-=-,故D 错误; 故选:B .【点睛】本题考查了分式的化简求值,分式的混合运算,解题的关键是熟练掌握运算法则进行解题.6.C解析:C【解析】【分析】证明ABC ≌()ADE SAS ,得出45ACF E ∠=∠=︒,①正确;由ABC ACD ABCD S S S =+四边形,得出212ADE ACD ACE ABCD S S S S AC =+==四边形,②正证出AF AG =,2CE AF =,③正确;由ABF ADE ABF ABC ACF SS S S S +=+=,不能确定ACF BCD S S =,④不正确;即可得出答案.【详解】解:∵∠CAE =90°,AE =AC ,∴∠E =∠ACE =45°,∵∠BAD =∠CAE =90°,∴∠BAC +∠CAD =∠EAD +∠CAD∴∠BAC =∠EAD ,在△ABC 和△ADE 中,AB AD BAC DAE AC AE =⎧⎪∠=∠⎨⎪=⎩, ∴△ABC ≌△ADE (SAS ),∴∠ACF =∠E =45°,①正确;∵S 四边形ABCD =S △ABC +S △ACD ,∴S 四边形ABCD =S △ADE +S △ACD =S △ACE =12AC 2,②正确; ∵△ABC ≌△ADE ,∠ACB =∠AEC =45°,∵∠ACE =∠AEC =45°,∴∠ACB =∠ACE ,∴AC 平分∠ECF ,过点A 作AG ⊥CG ,垂足为点G ,如图所示:∵AC 平分∠ECF ,AF ⊥CB ,∴AF =AG ,又∵AC =AE ,∴∠CAG =∠EAG =45°,∴∠CAG =∠EAG =∠ACE =∠AEC =45°,∴CG =AG =GE ,∴CE =2AG ,∴CE=2AF,③正确;∵S△ABF+S△ADE=S△ABF+S△ABC=S△ACF,不能确定S△ACF=S△BCD,④不正确;故选:C.【点睛】本题考查了全等三角形的判定与性质、等腰直角三角形的判定与性质等知识;证明三角形全等是解题的关键.7.A解析:A【解析】【分析】【详解】∵△ABD≌△ACE,∴∠ADB=∠AEC,∠BAD=∠CAE,BD=CE,∴180°-∠ADB=180°-∠AEC,∠BAD+∠DAE=∠CAE+∠DAE,BD+DE=CE+DE,即∠ADE=∠AED,∠BAE=∠CAD,BE=CD,故B、C、D选项成立,不符合题意;无法证明AC=CD,故A符合题意,故选A.8.C解析:C【解析】【分析】由全等三角形的性质可得到对应边、对应角相等,结合条件逐项判断即可.【详解】∵△ABE≌△ACD,∴AB=AC,AD=AE,BE=DC,∠BAE=∠CAD,∴A、B、D正确,AD与DE没有条件能够说明相等,∴C不正确,故选:C.【点睛】本题主要考查了全等三角形的性质,掌握全等三角形的对应边相等、对应角相等是解题的关键.9.C解析:C【解析】【分析】有完全平方式的特征,列式进行计算,即可得到答案.【详解】解:∵()22516x m x +-+是完全平方式, ∴()12452m =±⨯⨯-,∴2108m -=±,解得:9m =或1m =;故选:C .【点睛】本题考查了完全平方式的应用,解题的关键是掌握完全平方式的特征进行解题.10.A解析:A【解析】【分析】根据各个选项中的式子,可以计算出正确的结果,从而可以解答本题.【详解】解:∵2a 2•a 3=2a 5,故选项A 正确;∵(3m 2)2=9m 4,故选项B 错误;∵m 6÷m 2=m 4,故选项C 错误;∵(x+1)2=x 2+2x+1,故选项D 错误;故选:A .【点睛】本题考查整式的混合运算,解答本题的关键是明确整式混合运算的计算方法.二、填空题11.【解析】【分析】由等腰三角形的定义,对腰长进行分类讨论,结合三角形的三边关系,即可得到答案.【详解】解:∵等腰三角形的其中两边长分别为,,当4为腰长时,,不能构成三角形;当9为腰长时,解析:22【解析】【分析】由等腰三角形的定义,对腰长进行分类讨论,结合三角形的三边关系,即可得到答案.【详解】解:∵等腰三角形的其中两边长分别为4,9,当4为腰长时,4489,不能构成三角形;当9为腰长时,能构成三角形,++=;∴这个等腰三角形的周长为:49922故答案为:22.【点睛】本题考查了等腰三角形的定义,以及三角形的三边关系,解题的关键是熟练掌握等腰三角形的定义进行解题.注意运用分类讨论的思想.12.35【解析】分析:过点G作AB平行线交EF于P,根据平行线的性质求出∠EGP,求出∠PGF,根据平行线的性质、平角的概念计算即可.详解:过点G作AB平行线交EF于P,由题意易知,AB∥GP解析:35【解析】分析:过点G作AB平行线交EF于P,根据平行线的性质求出∠EGP,求出∠PGF,根据平行线的性质、平角的概念计算即可.详解:过点G作AB平行线交EF于P,由题意易知,AB∥GP∥CD,∴∠EGP=∠AEG=20°,∴∠PGF=70°,∴∠GFC=∠PGF=70°,∴∠HFD=180°-∠GFC-∠GFP-∠EFH=35°.故答案为35°.点睛:本题考查的是平行线的性质、三角形内角和定理的应用,掌握两直线平行、内错角相等是解题的关键.13.1【解析】【分析】由Rt△ABC中,∠C是直角,O是角平分线的交点,AC=3,BC=4,AB=5,可得S△ABC=AC•BC=(AC+BC+AB)•r,继而可求得答案.【详解】解:∵Rt△解析:1【解析】【分析】由Rt △ABC 中,∠C 是直角,O 是角平分线的交点,AC=3,BC=4,AB=5,可得S △ABC =12AC•BC=12(AC+BC+AB)•r ,继而可求得答案. 【详解】解:∵Rt △ABC 中,∠C 是直角,O 是角平分线的交点,AC=3,BC=4,AB=5,∴S △ABC =12AC•BC=12(AC+BC+AB)•r , ∴3×4=(3+4+5)×r ,解得:r=1.故答案为1.【点睛】本题考查了角平分线的性质.此题难度适中,注意掌握S △ABC =12AC•BC=12(AC +BC+AB)•r . 14.20【解析】【分析】逆用同底数幂的乘法、幂的乘方法则即可解题.【详解】解:.故答案为:20.【点睛】本题考查了同底数幂的乘法法则、幂的乘方(逆用),熟练掌握同底数幂的乘法、幂的乘方法解析:20【解析】【分析】逆用同底数幂的乘法、幂的乘方法则即可解题.【详解】解:222()2520m n m n a a a +=⋅=⨯=.故答案为:20.【点睛】本题考查了同底数幂的乘法法则、幂的乘方(逆用),熟练掌握同底数幂的乘法、幂的乘方法则是解题关键.15.0;4;8;12【解析】【分析】此题要分两种情况:①当P在线段BC上时,②当P在BQ上,再分别分两种情况AC=BP或AC=BN进行计算即可.【详解】解:①当P在线段BC上,AC=BP时,△解析:0;4;8;12【解析】【分析】此题要分两种情况:①当P在线段BC上时,②当P在BQ上,再分别分两种情况AC=BP 或AC=BN进行计算即可.【详解】解:①当P在线段BC上,AC=BP时,△ACB≌△PBN,∵AC=2,∴BP=2,∴CP=6−2=4,∴点P的运动时间为4÷1=4(秒);②当P在线段BC上,AC=BN时,△ACB≌△NBP,这时BC=PN=6,CP=0,因此时间为0秒;③当P在BQ上,AC=BP时,△ACB≌△PBN,∵AC=2,∴BP=2,∴CP=2+6=8,∴点P的运动时间为8÷1=8(秒);④当P在BQ上,AC=NB时,△ACB≌△NBP,∵BC=6,∴BP=6,∴CP=6+6=12,点P的运动时间为12÷1=12(秒),故答案为0或4或8或12.【点睛】本题考查三角形全等的判定方法,判定两个三角形全等时必须有边的参与,若有两边一角对应相等时,角必须是两边的夹角.16.4【解析】【分析】△ABC的面积S=AB×BC==12,延长BP交AC于点E,则E是AC的中点,且BP=BE,即可求解.【详解】解:△ABC的面积S=AB×BC==12,延长BP交AC于解析:4【解析】【分析】△ABC的面积S=12AB×BC=1642⨯⨯=12,延长BP交AC于点E,则E是AC的中点,且BP=23BE,即可求解.【详解】解:△ABC的面积S=12AB×BC=1642⨯⨯=12,延长BP交AC于点E,则E是AC的中点,且BP=23BE,(证明见备注)△BEC的面积=12S=6,BP=23 BE,则△BPC的面积=23△BEC的面积=4,故答案为:4.备注:重心到顶点的距离与重心到对边中点的距离之比为2:1,例:已知:△ABC,E、F是AB,AC的中点.EC、FB交于G.求证:EG=12CG 证明:过E作EH∥BF交AC于H.∵AE=BE,EH∥BF,∴AH=HF=12 AF,又∵AF=CF,∴HF=12 CF,∴HF:CF=12,∵EH∥BF,∴EG:CG=HF:CF=12,∴EG=12 CG.【点睛】此题考查了重心的概念和性质: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.17.40【解析】【分析】根据方位角的概念,画图正确表示出行驶的过程,再根据已知转向的角度结合三角形的内角和与外角的关系求解.【详解】如图,A沿北偏东60°的方向行驶到B,则∠BAC=90°-解析:40【解析】【分析】根据方位角的概念,画图正确表示出行驶的过程,再根据已知转向的角度结合三角形的内角和与外角的关系求解.【详解】如图,A沿北偏东60°的方向行驶到B,则∠BAC=90°-60°=30°,B沿南偏西20°的方向行驶到C,则∠BCO=90°-20°=70°,又∵∠ABC=∠BCO-∠BAC,∴∠ABC=70°-30°=40°.故答案为40°【点睛】解答此类题需要从运动的角度,正确画出方位角,再结合三角形的内角和与外角的关系求解.18.21【解析】【分析】由折叠性质可知,△ADE≌△A′DE,可得对应边相等,然后将阴影部分图形周长BC+BD+AD′+AE′+CE转化为BC+AB+AC即可求解.【详解】解:∵AB=AC=8解析:21【解析】【分析】由折叠性质可知,△ADE≌△A′DE,可得对应边相等,然后将阴影部分图形周长BC+BD+AD′+AE′+CE转化为BC+AB+AC即可求解.【详解】解:∵AB=AC=8,∴△ABC是等腰三角形,又由折叠性质可知AD=AD′,AE=AE′,∴阴影部分图形的周长为,BC+BD+AD′+AE′+CE,=BC+BD+AD+CE+AE,=BC+AB+AC,=5+8+8,=21,故答案为:21.【点睛】本题主要考查轴对称折叠性质,正确理轴对称折叠性质是本题的解题关键.19.【解析】【分析】直接利用分式有意义的条件分析得出即可.【详解】解:根据分式有意义得:2+x≠0,解得:x≠-2.故答案为:≠-2.【点睛】本题考查了分式有意义的条件,关键是熟练掌握解析:2≠-【解析】【分析】直接利用分式有意义的条件分析得出即可.【详解】解:根据分式有意义得:2+x≠0,解得:x≠-2.故答案为:≠-2.【点睛】本题考查了分式有意义的条件,关键是熟练掌握知识点:分式有意义,分母不为0.20.【解析】【分析】根据MN 与x 轴平行可以求得M 点坐标,进一步可以求得点M 关于y 轴的对称点的坐标.【详解】解:∵MN 与x 轴平行,∴两点纵坐标相同,∴a=-5,即M 为(-3,-5) ∴点M 关解析:()3,5-【解析】【分析】根据MN 与x 轴平行可以求得M 点坐标,进一步可以求得点M 关于y 轴的对称点的坐标.【详解】解:∵MN 与x 轴平行,∴两点纵坐标相同,∴a=-5,即M 为(-3,-5)∴点M 关于y 轴的对称点的坐标为:(3,-5)故答案为(3,-5).【点睛】本题考查图形及图形变化的坐标表示,熟练掌握各种图形及图形变化的坐标特征是解题关键.三、解答题21.(1)50°;(2)见解析【解析】试题分析:⑴根据等腰三角形的性质、三角形的内角和定理与四边形的内角和为360°,可求得所求角的度数.⑵连接BF ,根据三角形内角和定理与等腰三角形三线合一,可知12CFD ABC ∠=∠. 试题解析:⑴ ∵∠AFD =155°,∴∠DFC =25°,∵DF ⊥BC ,DE ⊥AB ,∴∠FDC =∠AED =90°,在Rt △EDC 中,∴∠C =90°﹣25°=65°,∵AB =BC ,∴∠C =∠A =65°,∴∠EDF=360°﹣65°﹣155°﹣90°=50°.⑵ 连接BF ,∵AB =BC ,且点F 是AC 的中点,∴BF ⊥AC ,12ABF CBF ABC ∠=∠=∠, ∴∠CFD +∠BFD =90°,∠CBF +∠BFD =90°,∴∠CFD =∠CBF , ∴12CFD ABC ∠=∠. 22.解:(1)①②④⑤;(2)18DAE ∠=︒【解析】【分析】(1)根据三角形的高、角平分线和中线的定义即可得到AD ⊥BC ,∠CAE=12∠CAB ,BC=2BF ,S △AFB =S △AFC .(2)先根据三角形内角和得到∠CAB=180°-∠ABC-∠C=84°,再根据角平分线与高线的定义得到∠CAE=12∠CAB=42°,∠ADC=90°,则∠DAC=90°-∠C=24°,然后利用∠DAE=∠CAE-∠DAC 计算即可.【详解】(1)∵AD ,AE 和AF 分别是△ABC 的高、角平分线和中线,∴AD ⊥BC ,∠CAE=∠BAE=12∠CAB ,BF=CF ,BC=2BF , ∵S △AFB =12BF•AD ,S △AFC =12CF•AD , ∴S △AFB =S △AFC ,故①②④⑤正确,③错误,故答案为①②④⑤;(2)∵∠C=66°,∠ABC=30°,∴∠CAB=180°-∠ABC-∠C=84°,∴∠CAE=12∠CAB=42°, ∵∠ADC=90°,∠C=66°,∴∠DAC=24°∴∠DAE=∠CAE-∠DAC=42°-24°=18°.【点睛】本题考查了三角形的高、角平分线和中线的定义,三角形内角和为180°.也考查了三角形的面积.正确的识别图形是解题的关键.23.(1)35CEB '∠=︒;(2)20ADB CEB ''∠=∠-︒,理由见解析;(3)①当点D 在边AB 上时,80CB E ADB ''∠=∠-︒,②当点D 在AB 的延长线上时,80CB E ADB ''∠+∠=︒;【解析】【分析】(1)利用四边形内角和求出∠BEB′的值,进而可求出CEB '∠的度数;(2)方法类似(1);(3)分两种情形:如图1-1中,当点D 线段AB 上时,结论:∠CB′E+80°=∠ADB′;如图2中,当点D 在AB 的延长线上时,结论:∠CB′E+∠ADB′=80°.分别利用平行线的性质证明即可.【详解】解:(1)如图1中由翻折的性质可知,∠DBE=∠DB′E=80°,∵∠ADB′=125°,∴∠BDB′=180°-125°=55°,∵∠BEB′+∠BDB′+∠DBE+∠DB′E=360°,∴∠BEB′=360°-55°-80°-80°=145°,∴∠CEB′=180°-145°=35°.(2)结论:∠ADB′=∠CEB′-20°.理由:如图2中,∵80ABC ∠=︒,∴B′=CBD=180°-80°=100°,∵∠ADB′+∠BEB′=360°-2×100°=160°,∴∠ADB′=160°-∠BEB′,∵∠BEB′=180°-∠CEB′,∴∠ADB′=∠CEB′-20°.(3)如图1-1中,当点D 线段AB 上时,结论:∠CB′E+80°=∠ADB′理由:连接CB′.∵CB′//AB,∴∠ADB′=∠CB′D,由翻折可知,∠B=∠DB′E=80°,∴∠CB′E+80°=∠CB′D=∠ADB′.如图2-1中,当点D在AB的延长线上时,结论:∠CB′E+∠ADB′=80°.由:连接CB′.∵CB′//AD,∴∠ADB′+∠DB′C=180°,∵∠ABC=80°,∴∠DBE=∠DB′E=100°,∴∠CB′E+100°+∠ADB′=180°,∴∠CB′E+∠ADB′=80°.综上所述,∠CB'E与∠ADB'的数量关系为∠CB′E+80°=∠ADB′或∠C B′E+∠ADB′=80°.故答案为:∠CB′E+80°=∠ADB′或∠CB′E+∠ADB′=80°.【点睛】本题考查翻折变换,多边形内角和定理,平行线的性质,以及分类讨论等知识,解题的关键是灵活运用所学知识解决问题,属于中考常考题型.24.(1)见解析;(2)见解析【解析】【分析】(1)①以B为圆心,任意长为半径画弧,交AB、BC于F、N,再以F、N为圆心,大于12FN长为半径画弧,两弧交于点M,过B、M画射线,交AC于D,线段BD就是∠B的平分线;②分别以A、B为圆心,大于12AB长为半径画弧,两弧交于X、Y,过X、Y画直线与AB交于点E,点E就是AB的中点;(2)首先根据角平分线的性质可得∠ABD的度数,进而得到∠ABD=∠A,根据等角对等边可得AD =BD ,再加上条件AE =BE ,ED =ED ,即可利用SSS 证明△ADE ≌△BDE .【详解】解:(1)作出B 的平分线BD ; 作出AB 的中点E .(2)证明:160302ABD ∠=⨯︒=︒,30A ∠=︒, ABD A ∴∠=∠,AD BD ∴=,在ADE ∆和BDE ∆中, AE BE ED ED AD BD =⎧⎪=⎨⎪=⎩()ADE BDE SSS ∴∆≅∆.【点睛】此题主要考查了复杂作图,以及全等三角形的判定,关键是掌握基本作图的方法和证明三角形全等的判定方法.25.(1)见解析;(2)见解析【解析】【分析】(1)根据题意证明△ADB ≌△ADC 即可证明AB =AC ;(2)连接BC ,由中垂线的逆定理证明即可.【详解】证明:(1)∵在△ADB 和△ADC 中,==ADB ADC B CAD AD ∠⎧⎪∠∠⎨⎪=⎩, ∴△ADB ≌△ADC (AAS ),∴AB =AC ;(2)连接BC ,∵△ADB ≌△ADC ,∴AB =AC ,BD =CD ,∴A 和D 都在线段BC 的垂直平分线上,∴AD 是线段BC 的垂直平分线,即AD ⊥BC .【点睛】本题主要考查全等三角形的判定与性质以及中垂线的逆定理,熟记相关定理是解题关键.26.(1)见解析;(2)见解析【解析】【分析】(1)根据AD ∥BC 可知∠ADC=∠ECF ,再根据E 是CD 的中点可求出△ADE ≌△FCE ; (2)由(1)知△ADE ≌△FCE ,得到AE=EF ,AD=CF ,由于AB=BC+AD ,等量代换得到AB=BC+CF ,即AB=BF ,证得△ABE ≌△FBE ,即可得到结论.【详解】证明:(1)∵AD ∥BC (已知),∴∠ADC =∠ECF (两直线平行,内错角相等),∵E 是CD 的中点(已知),∴DE =EC (中点的定义).∵在△ADE 与△FCE 中,ADC ECF DE ECAED CEF ∠=∠⎧⎪=⎨⎪∠=∠⎩, ∴△ADE ≌△FCE (ASA );(2)由(1)知△ADE ≌△FCE ,∴AE =EF ,AD =CF ,∵AB =BC +AD ,∴AB =BC +CF ,即AB =BF ,在△ABE 与△FBE 中,AB BF AE EF BE BE =⎧⎪=⎨⎪=⎩, ∴△ABE ≌△FBE (SSS ),∴∠AEB =∠FEB =90°,∴BE ⊥AF .【点睛】主要考查了平行线的性质,全等三角形的判定与性质,等腰三角形的“三线合一”的性质.27.(1)(4,3);(2)S=3342x +, 0<x <4;(3)不存在. 【解析】【分析】(1)直线y =13x -+1与x 轴、y 轴分别交于点A 、B ,可得点A 、B 的坐标,过点C 作CH ⊥x 轴于点H ,如图1,易证△AOB ≌△CHA ,从而得到AH =OB 、CH =AO ,就可得到点C 的坐标;(2)易求直线BC 解析式,过P 点作PG 垂直x 轴,由△OPA 的面积=1OA PG 2即可求出S 关于x 的函数解析式.(3)当S =92求出对应的x 即可. 【详解】解:(1)∵直线y =13x -+1与x 轴、y 轴分别交于点A 、B , ∴A 点(3,0),B 点为(0,1),如图:过点C 作CH ⊥x 轴于点H ,则∠AHC =90°.∴∠AOB =∠BAC =∠AHC =90°,∴∠OAB =180°-90°-∠HAC =90°-∠HAC =∠HC A .在△AOB 和△CHA 中,AOB CHA OAB HCA AB CA ∠∠⎧⎪∠∠⎨⎪⎩=== , ∴△AOB ≌△CHA (AAS ),∴AO =CH =3,OB =HA =1,∴OH =OA +AH =4∴点C 的坐标为(4,3);(2)设直线BC 解析式为y =kx +b ,由B (0,1),C (4,3)得:143b k b =⎧⎨+=⎩,解得1k=2b=1⎧⎪⎨⎪⎩, ∴直线BC 解析式为112y x =+, 过P 点作PG 垂直x 轴,△OPA 的面积=12OA PG ,∵PG =112y x =+,OA =3, ∴S =113(1)22x +=3342x +; 点P (x 、y )为线段BC 上一个动点(点P 不与B 、C 重合),∴0<x <4. ∴S 关于x 的函数解析式为S =3342x +, x 的的取值范围是0<x <4; (3)当s =92时,即339422x +=,解得x =4,不合题意,故P 点不存在. 【点睛】本题主要考查了一次函数图象上点的坐标特征、全等三角形的判定与性质、勾股定理、三角形的面积公式等知识,构造全等三角形是解决第(1)小题的关键. 28.70CDF ∠=︒【解析】【分析】首先根据三角形的内角和定理求得∠ACB 的度数,以及∠BCD 的度数,根据角的平分线的定义求得∠BCE 的度数,则∠ECD 可以求解,然后在△CDF 中,利用内角和定理即可求得∠CDF 的度数.【详解】解:∵30A ∠=︒,70B ∠=︒,∴18080ACB A B ∠=︒-∠-∠=︒.∵CE 平分ACB ∠,∴1402ACE ACB ∠=∠=︒. ∵CD AB ⊥于D ,∴90CDA ∠=︒,18060ACD A CDA ∠=︒-∠-∠=︒. ∴20ECD ACD ACE ∠=∠-∠=︒.∵DF CE ⊥,∴90CFD ∠=︒,∴18070CDF CFD ECD ∠=︒-∠-∠=︒.【点睛】本题考查了三角形的内角和等于180°以及角平分线的定义,是基础题,准确识别图形是解题的关键.29.探究:(a +b )(a ﹣b )=a 2﹣b 2;应用:(1)3;(2)1;拓展:5050【解析】【分析】探究:将两个图中阴影部分面积分别表示出来,建立等式即可;应用:(1)利用平方差公式得出(2m+n )•(2m+n )=4m 2﹣n 2,代入求值即可; (2)可将2020×2018写成(2019+1)×(2019﹣1),再利用平法差公式求值;拓展:利用平方差公式将1002﹣992写成(100+99)×(100﹣99),以此类推,然后化简求值.【详解】解:探究:图1中阴影部分面积a 2﹣b 2,图2中阴影部分面积(a+b )(a ﹣b ), 所以,得到乘法公式(a+b )(a ﹣b )=a 2﹣b 2故答案为(a+b )(a ﹣b )=a 2﹣b 2.应用:(1)由4m 2=12+n 2得,4m 2﹣n 2=12∵(2m+n )•(2m+n )=4m 2﹣n 2∴2m ﹣n =3故答案为3.(2)20192﹣2020×2018=20192﹣(2019+1)×(2019﹣1)=20192﹣(20192﹣1)=20192﹣20192+1=1拓展:1002﹣992+982﹣972+…+42﹣32+22﹣12=(100+99)×(100﹣99)+(98+97)×(98﹣97)+…+(4+3)×(4﹣3)+(2+1)×(2﹣1)=100+99+98+97+…+4+3+2+1=5050【点睛】本题考查平方差公式的应用.解题关键是熟练掌握平方差公式.30.(1)通分,分解因式,分式的除法法则,约分;(2)2,-2,1.【解析】试题分析:先对小括号部分通分,把除化为乘,再根据分式的基本性质约分,最后根据分式的分母不为0求值即可. 解:1(1+)2x -÷22214x x x -+- =212x x -+-÷2(1)(2)(2)x x x -+-(通分,分解因式) =21(2)(2)2(1)x x x x x -+-⋅-- (分式的除法法则) =21x x +- (约分)则不能选取的数有2,-2,1.考点:分式的化简求值点评:计算题是中考必考题,一般难度不大,要特别慎重,尽量不在计算上失分.。
2010-2011学年第一学期八年级科学期末模拟考试题(一)命题人:宝安中学——沈玉泉说明:1.全卷分第一卷和第二卷,共8页。
第一卷为选择题,第二卷为非选择题。
考试时间90分钟,满分100分。
2.第一卷选择题(1—32每小题选出答案后,填写到答题卷的相应位置,第二卷非选择题(33—42)答案必须写在答题卷指定的位置上。
第一卷 (选择题,共48分)一、选择题(在下列1——32小题中,每小题只有一个选项符合题意,请将正确答案填到答题卷相应位置上,每小题1.5分,共48分)1. 电解水的实验证明,水是由()A.氢气和氧气组成的 B.氢气分子和氧气分子构成的C.氢和氧组成的一种物质 D.一种混合物组成的物质2. 右图是“水循环示意图”,图中哪一环节能使陆地上的水不断得到补充,水资源得以再生A.海上内循环 B.海陆间循环C.陆上内循环 D.地表径流3. 下列关于溶液的说法中,正确的是()A.饱和溶液析出晶体后,就变成了不饱和溶液B.饱和溶液一定是浓溶液,不饱和溶液一定是稀溶液C.饱和溶液和不饱和溶液在一定的条件下可以互相转化D.透明、无色的液体一定是溶液4.可供我们直接利用的水是()A.河流水、埋藏较深的地下淡水、固体冰川B.河流水、固体冰川、土壤水C.河流水、固体冰川、淡水湖泊水D.河流水、淡水湖泊水、埋藏较浅的地下淡水5. 放在水平桌面上的书,所受力中属平衡力的是:A、书对桌面压力与书所受重力;B、书对桌面压力与桌面对书支持力;C、书所受的重力与桌面对书的支持力;D、书对桌面压力与桌子所受的重力6. 如图,轻质弹簧秤两端各挂有重为5牛的钩码,当弹簧秤静止时,弹簧秤的读数是:A.0 ; B.5牛; C.10牛; D.无法判断'.'.甲 乙 丙7. 足球运动员把足球踢向空中(如下),若不计空气阻 力,则下列表示足球在空中飞行时的受力图(G 表示重力,F 表示脚对球的作用力 ),正确的是:8. 一个物体在10牛拉力作用下,在水平面上以2米/秒的速度前进。
龙岗区2010-2011学年第一学期期末初中学业水平测试题八年级语文时间:100分钟满分:100分一、本大题共5道选择题,共15分。
1.下列词语中加点字的读音和书写完全正确的是()(3分)A.矫.健(jiǎo)濒.临(bīng)追溯.(sù)束手无策(shù)B.劫.难(jié)矗立..(chù)伧.俗(cāng)消.声匿迹(xiāo)C.栖.息(qī)藩.篱(fān)归咎.(jiù)锲.而不舍(qiè)D.奔丧.(sàng)面颊.(jiá)喷嚏.(tì)五彩斑斓.(lán)2.请选出下列句子中加点词语运用有误的一句是()(3分)A.简洁是智慧的灵魂,冗长是肤浅的藻饰..。
B.本学期语文教学要把.提高同学们的写作水平作为主要任务,切实抓好。
C.就连和东方文化八竿子打不着......的情人节、愚人节,也大有席卷华夏之势。
D.看到试卷上出现了无与伦比....的错误,小明心中十分后悔:为什么不认真审题呢?。
3.请选出下列句子排序合理,语意连贯的一项是()(3分)①高树与低树俯仰生姿。
②苏州园林栽种和修剪树木也着眼在画意。
③没有修剪得像宝塔那样的松柏,没有阅兵式似的道旁树:因为依据中国画的审美观点看,这是不足取的。
④落叶树与常绿树相间,花时不同的多种花树相间,这就一年四季不感到寂寞。
A.②①③④B. ③②④①C. ②①④③D.②④①③4.请选出下列句子表述正确的一项是()(3分)A.“铭”是古代刻在器物上用来警戒自己或者称颂功德的文字,后来就成为一种文体。
这种文体一般都是用韵的。
B.《信客》的整理是朱自清,字佩弦,我国现代散文家、诗人、学者。
C.“于是扑扑衣上的泥土,心里很轻松似的。
”一句运用了比喻的修辞手法,写出了父亲为儿子做了一点事而感到很满足的心情。
D.在老师和同学的帮助下,使他的成绩有了很大进步。
2010---2011学年度八年级英语第一学期期末考试试题时间90分钟,满分100I.单项选择。
(共15分,每小题1分)()1. ---_________ do you exercise ? ----- Every day.A. WhenB. WhatC. How longD. How often ()2. She ______ TV every day .A. seesB. looks at C watches D. looks()3. He _______ in 1998.A. is bornB. was bornC. is birthD. was birth ()4. ---Put the ingredients in the bowl and _________ , please.A .mix up it B. mix it up C. mix up them D. mix them up ()5. ---What’s the matter ______ you ?— I have a bad coldA. forB. withC. toD. on()6. --- What are you doing for vacation .---- I ____ my sister.A. babysittingB. are babysittingC. is babysittingD. am babysitting()7.______ are they going ? They are going on Monday.A. WhatB. WhenC. What timeD. How()8.It _____ me about 10 minutes to walk there.A. takeB. takesC. spendD. spends()9. Can you come to my party , Ted ? _____________ .A. Sorry, I ‘d likeB. Sur e, I’d love toC. Sure, I can’tD. Yes , I’d like.()10. Can you come to my party ______ Saturday afternoon ?A. onB. inC. atD. about()11. We both enjoy ______ to parties.A. goB. goingC. goesD. went()12 Do you like tomatoes ? --_________.A. Yes, you doB. No, you don’tC. Yes , I doD. No, I do ()13 He ______ short hair. He ____ calmA. is/ isB. has/hasC. is/D. has/is()14. Could I please use your ruler ? __________.A. Sorry, you can’t.B. Not at allC. That’s rightD. Yes, you can’t()15. Who writes _______ , Jim , Kate or John ?A. the most carefullyB. more carefullyC. the most carefulD. more carefulII将恰当的答语的序号填入相应的问句的括号里.(5分)()1.What are you going to be when you grow up ? a. Yes, a little ()2.Could you clean your room ? b. I’m goi ng be an engineer. ()3.How often do you eat fast food ? C. It was exciting. ()4.Are you feeling hungry ? d. Sorry, I can’t.I have to do my homework. ()5.How was your school trip ? e. Sometimes.III完形填空. (10分)Once a Frenchman go to England. He knew only __1__English. One day , When he was __2___ by the window of a restaurant and having lunch, he __3__ a voice(声音),“Look out !” So he put his head out of the window to __4__ what was going on outside . Just then , a basin of dirty water poured (浇) over his head. Then___5___. He was very angry . He shouted, “Damn you (该死) !See ___6__ you have done .”The men passing by laughed at him and he __7__ more angry . One of them __8___ him , “You __9__ be a foreigner . Look out__10__ English means be careful .”( ) 1 . A. a little B. little C. a few D. few( ) 2 . A. seeing B. buying C. working D. sitting( ) 3 . A. hear B. heard C. hearing D. listened to ( ) 4 . A. find B. Look C. find out D. look for ( ) 5 . A. other B. another C. the other D. others ( ) 6 . A. why B. how C. where D. what( ) 7 . A. got B. made C. did D. had( ) 8 . A. said B. told to C. told D. said to ( ) 9. A. will B. can C. may D. must( ) 10. A. in B. with C. at D. forIV. 阅读理解(40 分)(A)Lucy likes English very much. She works hard. She reads English every morning. She likes speaking English. She often listens to the radio. She likes watching TV. But she only watches it on Saturday evening.She doesn’t like dancing. But she likes singing. She sings very well . She likes driving a car, too. Her parents like her. And all the teachers like her, too.()1. Does Lucy read English in themorning? ______________.A. Yes, she doesB. Yes, she isC. No, she doesn’tD. No, she isn’t()2. When does she watch TV?A. Every eveningB. On Saturday eveningC. On SundayD. On Sunday evening()3.She likes singing and ______.A. dancingB. swimmingC. playing gamesD. driving a car()4.Who likes her ? ________________.A. Her parentsB. Her teachersC. Her classmatesD. A and B()5. From the story , we may know Lucy is ______.A. a good teacherB. a good driverC. a good studentD. a good American(B)We each have a memory. That’s why we can still remember things after a long time. Some people have very good memories and they can easily learn many things by heart, but some people can only remember things when they say or do the again and again. Many of the great men of the world have got surprising memories.A good memory is a great help in learning languages. Everybody learns his mother language when he is a small child. He hears the sounds, remembers them and then he learns to speak. Some children are living with their parents in foreign countries. They can learn two languages as easily as one because they hear,remember and speak two languages every day. In school it is not so easy to learn a foreign language because the pupils have so little time for it, and they are busy with other subjects, too.But your memory will become better and better when you do more and more exercises.( ) 6. Some people can easily learn many things by heart because __________ .A. they always sleep wellB. they often eat good footC. they read a lot of booksD. they have very good memories ( ) 7. Everybody learns his mother language __________ .A. at the age of sixB. when he is a small childC. after he goes to schoolD. when he can read and write ( ) 8. Before a child can speak, he must __________ .A. read and writeB. make sentencesC. hear and remember the soundsD. think hard( ) 9. In school the pupils can’t learn a foreign language easily because __________ .A.they have no good memoriesB.they have no goodteachersC. t hey don’t like itD. they are busy withother subjects( ) 10. Your memory will become better and better __________ .A.if you have a lot of good foodB. if you do more and moreexercisesC.if you do morning exercises every dayD. if you get upearly(C)根据短文内容判断句子正(T)误(F)Many children love junk food. It’s bad for their health. Their parents don’t want them to eat too much junk food. Although they know it’s not good habit ,they still eat it. Some of them eat this kind of food every day. Some only once or twice a week.Paul is unhealthy. He hardly ever exercises.He eats lots of junk food because he loves it.When he has money,he’ll buy junk food.His parents worry about him.But he says,“Maybe I’m not very healthy,but I enjoy myself.”( ) 11. Few children love junk food.( ) 12. Many parents want their children to eat junk food.( ) 13. Children know it’s a bad habit to eat junk food.( ) 14. Paul is very healthy.( ) 15 .Paul often borrows money to buy junk food.(D)阅读短文并根据短文内容回答问题:Mr. Smith had two sons .One is seven years old, and the other is five. One morning during the holidays, when he was cleaning the car, his younger son came and asked him for some money for sweets.“Sweets are bad for your teeth,” Mr. Smith said. “Take these two oranges instead ,and give one to your elder(年长的)brother,” One of the oranges is quite a lot bigger than the other one ,and as the small boy liked oranges very much, he kept that one for himself, and gave his brother the smaller one.When the other boy saw that his brother had a much larger orange than his own ,he said to him, “It’s selfish(自私的)to take thebigger one for yourself. If father had given me the oranges, I ’d have given you the bigger one.”“I know you would,” answered his brother.” That’s why I took it.”16. “What was Mr. Smith doing one morning?.17. What did his younger son ask for?.18. Did the son get what he wanted?.19. Who got the bigger orange?.20. Why did the elder brother say that his brother was selfish.______________________________________V.用括号中单词的适当形式填空(5分)1. Could you please_______(turn) on the TV?2. Sorry, I forgot________(tell) you that.3. How many ____ (hour) do you sleep every night?4. There are ___ (many) girl students in Class 2 than in Class 1.5. His father takes exercise every day, so he is very______(health) VI.用方框中所给词语的适当形式填空, 使短文正确、通顺、连贯。
深圳市松岗中学人教部编版八年级上册政治期末测试题一、选择题1.小刚在观看了“嫦娥四号”成功登陆月球的报道后,感到非常自豪,在心中暗下决心,一定要努力学习,将来为祖国多作贡献可见,关注国家大事()①可以激发自己的爱国情感②有利于增强自己的社会责任感③可以培养自己的主人翁意识④有利于在实践中发展和成就自己A.①②B.③④C.①②④D.①②③④2.一名失去双手的顾客前往餐厅就餐,他请求餐厅服务生给予帮助,一名年轻男服务生立即坐到他的对面,面带微笑地细心喂食,全程逾半小时。
这一善举启示我们①要主动帮助和关心他人②要平等待人,不歧视他人③要学会尊重他人④要学会欣赏他人A.①②③④B.①②④C.①②③D.①③④3.在当代中国,“天下兴亡、匹夫有责”被赋予新的内涵,它要求我们青少年()①面临国家危难,要担负起救国重任②要胸怀祖国、自觉承担起实现民族振兴的历史责任③选择自己喜欢的职业,谋求更好地发展④担负起历史重任,让青春绽放出绚丽的光彩A.①②B.③④C.②④D.①③4.下图漫画中人物的行为属于()A.民事违法行为B.行政违法行为C.刑事违法行为D.严重违法行为5.通过父母的抚育、老师的教诲和社会的关爱,我们的知识不断丰富,能力不断提高,价值观念日渐养成,逐步成长为一名合格的社会成员。
这表明()A.个人是社会的有机组成部分B.人的身份是在社会关系中确定的C.人的成长是不断社会化的过程D.人的生存和发展离不开社会6.“按时完成作业,奖2元”“主动帮助爸妈洗碗一次,奖1元”“打扫房间卫生,奖2元”……近日,《女儿劳动奖励细则》引起了网友热议。
对此你的看法是A.不同的角色应该承担不同的责任B.承担责任就应该获得物质的回报C.订立奖励细则就能培养良好家风D.承担责任不应该计较代价与回报7.“ 关爱是世界上最好的礼物,当你给别人时,别人会用同样的方式来回敬你。
”这句话告诉我们A.关爱他人的根本目的在于获得回报B.关爱他人也是一门生活的艺术C.关爱他人是社会和谐稳定的润滑剂D.关爱他人就是关爱和善待白己8.“善不是一种学问,而是一种行为。
[单击键入试卷名称] 第1页(共6页)[单击键入试卷名称] 第2页(共6页)第一学期八年级期末考试物理试卷(时间:90分钟 满分 100分)注意:本试卷分为选择题卷(Ⅰ卷)和答题卷(Ⅱ卷)两部分。
Ⅰ卷一、单项选择题(每小题2分,共30分)1.人们听到声音的响度是A .仅由声源的振幅决定的B .仅由声源到人耳的距离决定的C .仅由声源的频率决定的D .由声源的振幅、声源到人耳的距离等因素决定的 2.下列方法中属于在传播过程中减弱噪声的是A .在耳朵里塞一团棉花B .在马路和住宅之间设立屏障或植树造林C .将产生噪声的机器搬迁走D .做一个外罩把发出噪声的物体罩起来3.在音乐演奏会上,钢琴和小提琴同时合奏一首乐曲,观众能明显区别出钢琴和小提琴的琴声,这是因为钢琴和小提琴的A .音调不同B .响度不同C .音色不同D .音调和响度都不同4.关于光的传播,下列说法中正确的是A .光在所有的介质中传播的速度都是3×108 m/sB .光总是沿直线传播的C .光在同种均匀介质中是沿直线传播的D .光只在真空中沿直线传播5.下列关于红外线的说法中,正确的是A .红外线是一种可见光B .红外线是一种人眼看不见的光C .红外线不能像可见光那样传递能量D .红外线在空气中很难被传递6.小明同学在探究“凸透镜成像规律”实验时,把蜡烛沿主轴从距透镜30 cm 向15 cm 处移动,若他用的透镜焦距为10 cm ,则A .像变大,像距变大B .像变小,像距变小C .像先变小后变大,像距变大D .像先变小后变大,像距变小7.关于显微镜和放大镜观察物体时,看到的是物体的A .都是实像B .都是虚像,且都是放大的C .前者为实像,后者为虚像D .前者为虚像,后者为实像8.下列物态变化过程中吸热的是A .冬天,河面上的冰层增厚B .冬天,从外进入温暖的室内时眼镜蒙上一层水珠C .冬天,室外冰冻的衣服变干D .冬天,屋顶瓦面上的霜层增厚 9.下列关于汽化的几种说法中正确的是A .蒸发和沸腾是汽化的两种方式B .冬天从口中呼出的“白气”是水的汽化现象C .衣柜中的樟脑丸越来越小是汽化结果D .只有温度达到100 0C 时水才能沸腾 10.下列自然现象中属于凝华现象的是A .春天,江面弥漫着浓浓的大雾B .夏天清晨,花草叶上布满了露珠C .深秋,草地上到常见有一层霜D .深冬,湖面上结了一层厚厚的冰11.夏天,从冰箱中取出的鸡蛋,常看到鸡蛋先湿后干的现象,此现象反映的物态变化过程是A .先液化后蒸发B .先熔化后蒸发C .先液化后凝固D .先蒸发后液化12.下列各组物质中,在通常情况下都是绝缘体的是A.空气、金属、大地B.人体、纯水、塑料C.胶木、橡胶、玻璃D.盐水、干木棒、陶瓷13.下列关于电池的说法中正确的是A.汽车里通常使用的是干电池B.干电池有正、负极,而蓄电池不分正、负极C.电源就是电池D.手电筒里用的是干电池14.在如图所示的电路中,电灯L1和L2的连接方式依次是A.并联、并联、并联、串联B.串联、并联、并联、串联C.并联、串联、并联、串联D.串联、串联、并联、串联15.两只不同的灯泡串联在同一电源上,有一只灯泡发出了很强的光,而另一只灯泡却发出较暗的光,则下列说法中正确的是A.发光强的灯泡中电流大B.发光暗的灯泡中电流小C.两只灯泡通过的电流一样大D.条件不足,无法判断Ⅱ卷二、填空题(每空1分,共37分)请将答案直接填在题中空格横线上。
深圳市松岗中学人教版八年级上册生物期末综合题测试题一、选择题1.身体呈辐射对称,体表有刺细胞的生物是()A.海月水母B.涡虫C.华枝睾吸虫D.沙蚕2.腔肠动物和扁形动物相比较,它们共同的生理特点是()A.身体都呈两侧对称B.身体都有前后之分C.有口无肛门D.都有感觉器官3.蛔虫在消化道内不能被消化的原因是()A.体表有黏液B.运动快不消化C.身体细长D.体表有角质层4.下列各项中,不是线形动物主要特征的是A.身体背腹扁平,体表有刺细胞B.身体细长,成圆柱形C.体表有角质层D.有口有肛门5.对水质要求极高的桃花水母被称为“水中熊猫”,请问:桃花水母属于下列哪个类群?A.原生动物B.腔肠动物C.扁形动物D.软体动物6.下列动物与结构特点匹配错误的是()A.水螅——体表有刺细胞B.涡虫——身体两侧对称C.蛔虫——消化器官发达D.缢蛏——运动器官是足7.如图表示鱼和虾生活环境和结构特点的异同,两个圆的重合区域为相同点,则图中甲区和丙区所示的选项正确的是()①生活在水中②用鳍游泳③体内有脊柱④用鳃呼吸A.甲区②③,丙区①④B.甲区①②,丙区③④C.甲区①③,丙区②④D.甲区①④,丙区②③8.鲨鱼常出现在影视作品中,下列动物与其属于同一类群的()A.中华鲟、海马B.黄鳝、章鱼C.娃娃鱼、鲍鱼D.鳙鱼、鱿鱼9.如图是兔和狠的牙齿示意图,下列说法正确的是A.图甲是狼的牙齿,图乙是兔的牙齿B.兔和狼都有犬齿和臼齿C.图乙牙齿的分化,与其杂食性生活相适应D.牙齿分化提高了哺乳动物摄取食物的能力,又增强了对食物的消化能力10.如图是三种动物特征比较的示意图,交叉部分为共同特征。
下列说法不正确的是()A.①可以是卵生B.②可以是脊椎动物C.③可以是恒温动物D.④可以是鱼类11.家鸽的生殖发育方式比青蛙的高等,主要体现在哪些方面()①卵生②胎生③体内受精④体外受精⑤卵外有卵壳保护⑥有孵卵、育雏行为A.①③⑥B.①②④C.①③⑤D.③⑤⑥12.鸵鸟是草原上的一种大型鸟,它的运动器官和运动方式是()A.翅膀、奔跑B.下肢、奔跑C.翅膀、飞行D.下肢、飞行13.下列关于两栖动物和爬行动物共同点的叙述,正确的是()A.都属陆生脊椎动物B.都属变温动物C.所产的卵都有卵壳D.发育过程都经过变态发育14.爬行动物比两栖动物更适应陆地生活的原因是()①体表覆盖角质鳞片或甲②幼体用鳃呼吸③生殖和发育离开了水④皮肤裸露⑤完全用肺呼吸A.①②④B.①③⑤C.②③④D.③④⑤15.下列动物中,能用鳃呼吸的是()A.河马B.鲸鱼C.鲨鱼D.鳄鱼16.下列家兔的生理特点与其食性有直接关系的是()A.身体被毛B.牙齿分化C.心脏分四腔D.用肺呼吸17.王新同学暑期看《唐人街探案II》时,笑得竟然下颌不能正常合拢了。
松岗中学八年级上学期期末模拟复习题总分:100 时间:60分钟学校________班级8年级______班姓名___________班级学号_____________ 说明:选择题用2B铅笔涂在答题卡上,句子解释和写作写在另一张答题卡上。
I:单项选择:(20小题,共20分)1.----Don’t let the water tap_____.It will waste water.-----Sorry. I forgot to turn it __________.A.on,offB.up, offC.on,downD.up,down2.----What a dirty river!----- That’s true.How about__________?A.clean up itB.to clean it upC.cleaning up itD.cleaning it up3.There was a strange sound outside. Mary went out and ______around ,but she ______nothing.A.looked, sawB.saw, sawC.watched,lookedD.looked,looked4.-----There is only______milk in the glass.Can you get me some more? It is veryhot,so there are____swimmers in the pool.A.no,noneB.a little, manyC.many,a littleD.a lot, a few5.----We have finished____most of the homework,so I suggest ______a rest.A.doing ,havingB.doing, to haveC.to do, to haveD.to do,having6.---She would like ______us with Enlighs and she feels like_____others ,too.A.to help, to helpB.to help, helpingC.helping, to helpD.helping,helping7.----Who did you_____to be the chief editor?-----We all____for Tom.A.hold,electedB.vote, electedC.elect,votedD.hold,voted8.----__________teenagers obey parents and beautiful.-----Y es.They ______do so.It’s good for their growth.A.Ought,shouldB.Should,oughtC.Ought,ought toD.Should,ought to9.----_______sad you look!What’s up?-----Y ou never imagine_______a terrible accident we had.A.What, whatB.What, howC.How, whatD.How, how10.-----Are you ______today’s newspaper?-----No, there is nothing________in it.A.interesting,interestedB.interesting, interestingC.interested, interestingD.interested, interested11.----He passed the test.------_______________.A.What a shameB.What a pityC.That’s terribleD.Well,done12.________lovely weather it is! How about playing tennis outdoors?A.How aB.HowC.WhatD.What a13.----How big your school is!-----Y es, there are ______students in our school and _____of them are boys.A.thousands. of, two-thirdsB.thousands, two-thirdsC.two thousand, second-threeD.two thousands, two-thirds14.----What are you going to be when you grow up?----I hope______a detective like Homes.A.me to beB.beingC.to beD.I would15.---What did the teacher say just now?---- He told us______ things in the museum.A.don’t forgetB.forgetC.not to leaveD.don’t leave16.---Sad movies always make me ________cry.----- Not me.They make me____________.A.want, boringB.want to,boringC.want to ,boredD.to want ,bored17.---Would you mind _______the window?----___________.A.open, Of courseB.to open, Of course not.C.opeing, Of course notD.opens, Y es.18.---Beijing ,the capital of China, is one of _________cities in the world.A.the biggestB.biggerC.much biggerD.big19.----Please read every sentence carefully._________you are, _______mistakes you’ll make.A.The more carefully, the fewerB.The more careful, the lessC.The more carefully,the lessD.The more careful,the fewer20.----________has Mr White been an English teacher since he came to China?----________nearly a year.A.How soon, SinceB.How often, SinceC.How long, ForD.How far, forII:完型填空:(10小题,共10分)People say that being good at 21 helps foreigners(外国人) in the job market. New Australian Prime Minister Kevin Rudd is a good example. He took office(就职,执政) last Monday.In China , Rudd is popularly known by his Chinese name, Lu Kewen. He is the first Western leader who can speak Chinese. “ China is becoming one of the world's superpowers. I think __22 Australian politicians(政治家) know more about that than me,” said Rudd during the Australian election.I am an expert at Chinese cultures. Rudd's love for China began when he was 10. His mother gave him a book on the world's oldest countries. He loved the beautiful pictures of the country.In university, he chose Chinese history 23 his major(主修课) and studied almost everything about ___24__ . After school he 25 the Australian Foreign Office and worked 2 years in Beijing .“I went to China with my wife and daughter. We have a special love for Beijing ,for its people and culture,” Rudd once told Chinese President Hu Jintao.He 26 the president (总统)with his language skills when Hu paid a visit 27 Australia in September. The two became friends and Hu __28__ asked Rudd and his family 29 and see the 2008 Beijing Olympics.Rudd said his family members are also Chinese fans. “This year, our daught er married a Chinese Hong Konger. My oldest son is studying at Shanghai 's Fudan University ,” said Rudd.“Our youngest son, who is in high school, is really naughty. He doesn't like doing his homework. , 30 he has begun to study Chinese too.”21. A. English B. Chinese C. computer D. sports22. A. few B. a few C. little D. a little23. A. for B. in C. to D. as24. A. China B. Japan C. Australia D. America25. A. joined B. joined in C. took part in D. attended26. A. interested B. surprised C. excited D. impressed27. A. to B. for C. in D. on28. A. Even though B. ever C. so D. even29. A. come B. to come C. coming D. came30. A. and B. but C. when D. ifIII:阅读理解:(25小题,共50分)APeter is thirteen years old. He is in Grade Two this year. He likes to play footbatl and watchfootball matches. And he often reads newspapers. He does his best to know where and when there is going to be a football match. Now Peter is having lunch. He is listening to the radio, too. He is very happy because there is going to be a nice football match on TV this afternoon. He wants to watch it very much. But he is going to have English and Chinese lessons. He thinks hard and finds a way."Hello, Mrs. Black," Peter says to his teacher on the telephone, "Peter is ill in bed. He wants to ask for half a day’s leave.”“Oh, I’m sorry to hear that.” says Mrs.Black, “But who’s that?”“It’s my father,Mrs. Black.”31.Peter is a __________A. middle schoolt studentB. Y oung PioneerC. workerD. teacher32. Peter will be in___________ next year.A. Grade TwoB. Grade ThreeC. Grade OneD.school33. Peter often reads newspaper because _______________.A. he likes to read newsB. he likes to read storiesC. he want to know when and where a football match will beD. his father wants him to read them34. Peter wants to ask for half a day's leave because _______A. his father is ill in bed.B. he wants to watch the football matchC.he doesn't like to have English or Chinese lessonsD. he is ill in bed35. Which sentence is right?A. Mrs. Black is going to take Peter to see a doctorB. Peter likes to watch TV at four in the afternoon.C. Peter is a clever. boy.D. Peter isn't an honest boy.BDo you get angry when someone stands too close to you or talks too loudly?Many of us do. What makes us feel uncomfortable about these people?Perhaps it's about personal space(空间). Some scientists say that humans need a distance (距离) between themselves and strangers (陌生人).Personal space means not only space around the body, but around the senses (感官). People may feel uncomfortable when with certain(某种) sounds, smells or looks. For example, some people don't like the sound of a man shouting into a mobile phone in a shop. Or maybe they don't like sitting next to a woman on a bus with a lot of perfume (香水) on.While people like to protect their personal space, they may not know they are doing it. Many people hold newspapers in front of them on the subway. Perhaps they are using the newspaper to separate (分离) themselves from other people.How much people care about personal space is different from culture(文化) to culture. Some scientists say that people in the US need more personal space than people in other countries.But in Latin cultures, people are more comfortable standing close to each other.C hoose the best answer:36. What does the passage mainly tell us about?A. How to get angry.B. Personal space.C. Different countries.D. Understanding each other.37. Which of the following statements is true, according to the scientists?A. People in the US need the most personal space.B. In Latin cultures, people feel uncomfortable if others get very close to them.C. Personal space only means space around the body.D. People usually don’t care about their personal space.38. Which of the following is NOT an example of behavior that hurts personalspace in the story?A. Talking loudly into a mobile phone.B.Wearing dirty clothes at a party.C. Wearing too much perfume.D. Standing too close to somebody.39. According to the scientists, if people hold a newspaper closely, they ______.A. just want to read it.B. are probably thinking about some problem.C. are probably protecting their personal space, but don’t realize it.D. probably like reading very much.40.According to this passage, people will feel uncomfortable _____________.A. when someone stands too close to you.B. when with certain soundsC. when with certain smells or looksD. all the above.CBROWNIE and Spotty were neighbor dogs. They loved each other and played together so often that they had made a path (小路) through the grass of the field between their houses.One evening, Brownie's family noticed that Brownie hadn't returned home. They went looking for him with no success. Brownie didn't show up the next day, and by the next week he was still missing.Spotty went to Brownie's house alone. He barked loudly. But Brownie's family were too busy to care about him.Finally, one morning Spotty refused(拒绝) to take "no" for an answer. He followed Ted, Brownie's owner, everywhere he went. He barked, then rushed towa rd a nearby empty lot (地) and back, as if to say, "Follow me!"Finally, Ted followed the dog across the empty lot. The little dog led the man to a tree a half mile from the house. There Ted found Brownie alive. One of his legs was crushed (压住) in a trap (鼠夹子). Ted wished he had come earlier.Then Ted noticed something amazing. In a circle around the injured dog, he saw a lot of dog food. It was the remains (剩余物) of lots of meals.Spotty had been visiting Brownie every day. He had stayed with Brownie to protect him, snuggling (依偎) with him at night to keep him warm and nuzzling (用鼻子爱抚) him to keep his spirits(精神) up.Choose the best answer:41. What are Brownie and Spotty?A. They are two boys.B. They are two teenagers.C. They are two dogs.D.They are two cats.42. Why doesn’t Brownie return home one day?A. He is in a trapB. He hates his owner and wants to leave.C. He was playing so happily he forgot to return.D.He couldn’t find his home.43. How does Spotty attract the owner of Brownie?A. He barks loudly.B. He bites the owner.C. He runs around the house.D.He sat down.44. What had Brownie eaten those days?A. Grass.B. Food Spotty saved for him.C. Nothing.D. Only water.45. The best title for the story is _____.A. Never Too Old to LearnB. Practice Makes PerfectC. A Friend in NeedD.No pains , No gains.A.On pages 517—528B.On pages 108—109C.On pages 616—619D.On pages 493--49647. If you want to know more about Chinese film star Cheng Long, where should youbegin your search?A. POSTAL INFORMATION on page 1033—1039B. ENTERTAINMENT on page 385—399C. ENVIRONMENT on pages 80—101D. BUSINESS on pages 747—74948. Y our friend is interested in painting and ball games, you suggest he should findsomething on pages ____________.A.142—144 ,480—491B.841-873, 884-978C.480-491 , 884-978D.517-528, 131-14149 If you are interested in the men like Edison(爱迪生)and Newton(牛顿), you may search_____A.SCIENTISTSB.ART, FAMOUSC.POPULATIOND. EDUCATION50.Y ou can find “Christmas” on pages _______________.A.841-873B.108-109C.284-321D.513-516EY ou can tell a lot about your friends by what they carry in their schoolbags: what they read, and other things they like to do out of school.In the bags of middle school-age boys in the UK, you can find hand-held computer games and football magazines (杂志).Girls usually have a book in their bag (maybe a romantic novel) and some make-up (化妆品) and hair clips (发夹).Girls and boys both often have an electric dictionary, a mobile phone, and, of course, last night's homework!By looking in a friend's bag you can tell what kind of person they are. A clean and tidy bag without trash shows an organized (有条理的) person. A bag full of textbooks and pens belongs to (属于) someone who works hard.British middle school-age children also have a locker (有锁的存储柜) at school. They store(存放) their books or sports things, such as a football or tennis racket there. They use pictures to make the inside of their lockers beautiful. Maybe they have pictures of their favorite music or sports star, or photos of their friends. So just like their bag, their locker says a lot about the person.Choose the best answer:51.According to the passage, what might you find in a boy’s school bag?A. A romantic novel.B. Some make-up.C. A football.D. A computer game.52. What do you find in both girl’s and boy’s bags?A. Homework.B. Hair clips.C. Playing cards.D. Football magazines53. British middle school-age children probably don’t store _____ in their lockers.A. tennis racketsB. bikesC. footballD. books54. The passage is mainly about _____.A. how schoolbags are useful to studentsB. how most students in Britain like to play rather than studyC. how schoolbags tell a lot about a student’s habits and personality(个性)D. how schoolbags say how much money a person has55.What’s does the underlined word “trash”in the passage?A. 有条理的B. 垃圾, 废物C. 宝物D. 玩具IV:句子解释:(5小题,共10分)56.She frozed when she saw a snake.57.He paid 200yuan for the new bike.58.Y ou ought to discuss the problem with me.59.He doesn’t have enough money.60.What an interesting book it is!V:作文:(1小题,共10分)假如你是Jim. 你的朋友Simon 邀请你参加本周六的同学聚会,但你因为要去医院照顾生病的母亲而无法前往。