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2018-2019学年第一学期八年级科学教学质量检测（二）参考答案及评分建议一、选择题（本题共20小题，每小题3分，共60分）1.B2.A3.D4.B5.C6.C7.C8.A9.B 10.C 11.A 12.D 13.C 14.D 15.A 16.C 17.A 18.D 19.A 20.D二、填空题（本题共7小题，每空2分，共36分）21．根毛；有机物22．A；光合作用23．(1)吸气；(2)减小；(3)B24．(1)③；(2)二氧化碳；(3)叶绿素25．(1)甲；(2)C；(3)小肠26．(1)小肠长，小肠内壁有绒毛，绒毛内分布着丰富的毛细血管；小肠能分泌多种消化液，能消化各种营养物质。
(2)氧气含量明显增加，二氧化碳含量明显降低；尿素27．(1)光照强度；(2)N三、实验探究题（本题共5小题，每空3分，共39分）28．(1)7→4→6；(2)遮光部分不变色，未遮光部分变蓝色；(3)植物光合作用的产物有淀粉，且植物进行光合作用需要光照29．(1)便于观察和收集产生的气体(2)准备相同的两组实验装置分别加入等量、生长状况一致的金鱼藻，一组予以光照，一组遮光；用带火星木条检验试管中收集到的气体，判断植物是否进行了光合作用30．(1)甲(2)①处细胞不含叶绿体，无法进行光合作用(3)植物需要在有光的条件下才能进行光合作用，且光合作用的产物含有淀粉31．(1)石灰水变浑浊(2)对照作用，证明吸入的空气中二氧化碳的含量很少，并不能使石灰水变浑浊(3)各组织细胞32．(1)二氧化碳(2)光照是植物进行光合作用的条件四、解答题（本题共6小题，第33、34、35小题各6分，第36、37、38小题各9分，共45分）33．①树皮中有筛管，能向下运输有机物。
如果树皮被剥筛管割断，根就得不到足够的营养物质，从而就不能进行有效的生命活动，就会导致树木死亡；②空心的树只是失去了髓和部分木质部，而剩余的木质部中的导管仍然可以自下而上运输水和无机盐，所以树木仍然能成活、生长34．(1)光照强度增强，光合作用强度也随之增强，二氧化碳吸收量也就增多（3分）(2)温度（或二氧化碳浓度）（3分）35．(1)酶在生物体内起催化作用(2)不符合科学原理，不能起到减肥作用，因为酵素属于蛋白质，在消化系统中蛋白质会被分解36．(1)防止血液倒流（3分）(2)肾脏（3分）(3)右心房（3分）37．(1)排出血液（血浆）中的尿素等废物(2)静脉(3)吃进的蛋白质越多，产生的尿素等代谢终产物就越多，肾的负担就越重。
初二下学期期末物理试卷一、选择题（本题包括10个小题）1．关于功的概念，下列说法中正确的是A．物体只要移动了距离，力就做了功B．只要有力作用在物体上，力就对物体做了功C．有力作用在物体上，物体在力的方向上移动了距离，那么这个力对物体做了功D．有力作用于物体，物体又移动了距离，那么这个力对物体做了功【答案】C【解析】【详解】A．物体移动了距离，如果物体在该方向上没有力的作用，则力对物体不做功，故A错误；B．物体受到力的作用，如果物体在力的方向上没有移动距离，则力对物体不做功，故B错误；C．有力作用在物体上，并且物体在力的方向上移动了距离，这个力对物体做了功，故C正确；D．有力作用在物体上，物体移动了距离，但移动的距离不一定在力的方向上，不能确定是否做功，故D 错误。
2．如图所示，一刻度均匀的轻质杠杆在A处挂重12N的物体，若要使杠杆在水平位置平衡，则在杠杆B 处施加的竖直向下的拉力为A．4N B．5N C．6N D．8N【答案】C【解析】【详解】设杠杆每一格长度是L，B处施加的竖直向下的拉力，由杠杆平衡条件知道，F A l A =F B l B，即：12N×2L= F B ×4L，解得：F A =6N，故C符合题意。
3．用同一滑轮组分别把100N和200N的重物匀速提高5m，如果两种情况下的额外功相等，则下列叙述正确的是（）A．做的总功不相等B．两次的机械效率相等C．所做的有用功相等D．用于拉绳子的力两次相等【解析】【详解】A．额外功相等，物体上升的高度都是5m，根据W＝Gh可知提升100N和200N的物体做的有用功是不同的，所以总功也是不同的，故A正确；B．额外功相等，总功不相等，所以滑轮组的机械效率不相等，故B错误；C．物体上升的高度都是5m，根据W＝Gh可知提升100N和200N的物体做的有用功是不同的，故C错误；D．用的是同一个滑轮组，物体上升的高度相同，所以绳子末端移动的距离相同，因总功不相等，根据W ＝Fs可知两次拉绳子的力是不同的，故D错误．4．关于粒子和宇宙，下列认识中正确的是A．原子是由质子和中子组成的B．摩擦起电是由于物体经摩擦后产生了电荷C．太阳是宇宙的中心，地球是太阳的一颗行星D．电子绕原子核运动与地球绕太阳运动相似【答案】D【解析】【详解】A．原子是由原子核和核外电子组成的，A不符合题意；B．摩擦起电是由于物体经摩擦后电子发生了转移，并不是产生了电荷，B不符合题意；C．宇宙没有中心，太阳是太阳系的中心，地球是太阳的一颗行星，C不符合题意；D．电子绕原子核运动与地球绕太阳运动相似，这是原子的核式结构模型，D符合题意．5．下列关于质量的说法正确的是（）A．水结成冰后质量变大了B．物理书在渭南和西安的质量是一样的C．1kg的棉花比1kg的铁块质量小D．将铁块压成铁饼，质量减小了【答案】B【解析】【分析】【详解】质量是物体所含物质的多少，是物体本身的一种属性，与物体的位置、形状、状态、温度等都没有关系；A．水结冰后，是物质状态发生变化，但质量不随状态而变化，故A错误；B．物理书在渭南和西安，位置发生变化，但是所含物质的多少没变，质量不变，故B正确；C．1kg铁和1kg棉花所含物质多少相同，即质量相等，故C错误；D．将铁块压成铁饼，物体的形状发生变化，质量不变，故D错误。
2017-2018学年第二学期八年级物理教学质量检测（二）基础部分一、填空题（共20分，每空1分）1． 将一物体压入装满水的烧杯中，其排开的水为3N ，则物体受到的浮力大小为 ▲ N ，方向竖直 ▲ 。
2． 小明将重为3N 的石块挂在弹簧测力计下端，先后浸没在水和盐水中，石块静止时弹簧测力计的示数如图甲、乙所示，则石块在水中所受浮力为 ▲ N ；从图中还可看出石块所受浮力的大小与液体的 ▲ 有关。
3． 一个正方体铁块，浸没在水下某深度时，上底面受到15 N 压力，下底面受到20 N 压力，则此时铁块受到的浮力是 ▲ N ；当铁块下沉到某位置时，上底面受到的压力增大至20 N 时，下底面受到的压力是 ▲ N 。
4． 把体积为5×10-4m 3的球浸没在水中，球受到的浮力是 ▲ N ，若该球重为6N ，放手后这个球将 ▲ （选填“上浮”“悬浮”或“下沉”）。
(g =10N/kg ，ρ水=1.0×103kg/m 3)5． 把橡皮泥捏成碗形，可以漂浮在水面上，这是采用 ▲ 的方法增大了排开水的体积，从而增大可利用的浮力。
某同学用质量为20 g 的橡皮泥做成的船能漂浮在某液面上，此时橡皮泥排开液体的质量是 ▲ g 。
6． 如图是新建的华中第一高楼——武汉中心大厦，已于4月16日封顶。
电梯匀速上行时，动能 ▲ ，机械能 ▲ 。
（均选填“变大”“不变”或“变小”）7． 某人在水平地面上用20N 的水平推力推动重100N 的物体，20 s 内在水平面上沿推力的方向前进了5m ，此人做的功为 ▲ J ，重力对该物体做功为 ▲ J 。
8． 如图甲所示，高为h 的光滑斜面上，一物块从顶端A 点由静止自由滑到底端B 点，在此过程中，物块的机械能 ▲ （选填“守恒”或“不守恒”）；图乙所示的图像表示该物块的 ▲ （选填“动能”或“重力势能”）随高度变化的规律。
9． 如图是小明玩弹弓的情景。
经验表明，橡皮筋拉得越长，同样的“子弹”射得越远，这说明橡皮筋的弹性势能与橡皮筋 ▲ 有关；若橡皮筋被拉的长度相同，而所用“子弹”的质量不同，则质量大的“子弹”射出的距离较小，原因是质量大的“子弹”射出时的 ▲ 小。
初二下学期期末物理试卷一、选择题（本题包括10个小题）1．用细绳将吊灯悬挂在天花板上，如图所示，吊灯保持静止状态，则下列说法正确的是A．吊灯所受拉力与吊灯所受重力是一对平衡力B．天花板所受拉力与吊灯所受拉力是一对平衡力C．吊灯所受重力与细绳所受拉力是一对相互作用力D．天花板对细绳的拉力与吊灯所受重力是一对相互作用力【答案】A【解析】【详解】A．吊灯所受拉力与吊灯所受重力，大小相等、方向相反、作用在同一个物体上、且作用在同一条直线上，是一对平衡力，故A正确B．天花板所受拉力作用在天花板上，吊灯所受拉力作用在吊灯上，所以天花板所受拉力与吊灯所受拉力不是一对平衡力，故B不正确C．吊灯所受重力的施力物体是地球, 细绳所受拉力的施力物体是吊灯，所以吊灯所受重力与细绳所受拉力不是一对相互作用力，故C不正确D．天花板对细绳的拉力施力物体是天花板，吊灯所受重力施力物体是地球，所以天花板对细绳的拉力与吊灯所受重力不是一对相互作用力，故D不正确2．生活中的许多现象都与我们学过的物理知识有关，下列说法中正确的是（）A．高压锅容易将食物煮熟，利用了沸点随气压的增大而减小B．飞机机翼设计成“上凸下平”的形状，利用了流速越大气压越大的原理C．汽车在水平地面上静止不动，地面对汽车的支持力与汽车对地面的压力是一对平衡力D．用吸管将饮料吸入口中是利用了大气压强的作用【答案】D【解析】【分析】【详解】A．高压锅容易将食物煮熟，是利用了水的沸点随气压的增大而升高的原理，故A错误；B．飞机机翼设计成“上凸下平”的形状，利用了流速越大气压越小的原理，故B错误；C．地面对汽车的支持力与汽车对地面的压力，作用在两个物体上，所以二力不是一对平衡力。
故C错误；D．吸管吸饮料时，是先把吸管内的空气吸走，吸管内气压减小，在外界大气压的作用下，饮料被压进吸管里，故D 正确。
故选D 。
3．下图为“测滑轮组机械效率”的实验．在弹簧测力计拉力作用下，重6N 的物体2s 内匀速上升0.1m ，弹簧测力计示数如图示（不计绳重与摩擦）．下列说法错误的是（ ）A ．弹簧测力计的拉力是2.4NB ．物体上升的速度为0.05m/sC ．弹簧测力计拉力的功率为0.12WD ．滑轮组的机械效率约83.3％ 【答案】C 【解析】分析：由图可知使用滑轮组承担物重的绳子股数n ，拉力端移动的距离s nh =，利用W Fs =求拉力做的总功，再利用WP t=求功率；已知物体的重力和上升高度，利用W Gh =求有用功，滑轮组的机械效率等于有用功与总功之比．解答：由图可知，弹簧测力计的拉力是2.4N ，故A 正确；物体2s 内匀速上升0.1m ，物体上升的速度为0.10.05/2s m v m s t s===，故B 正确；n=3，拉力端端移动距离330.10.3s h m m ==⨯=，拉力做的总功为： 2.40.30.72W Fs N m J ==⨯=总；拉力的功率为：0.720.362W JP W t s总===，故C 错误；拉力做的有用功为：60.10.6W Gh N m J ==⨯=有用；滑轮组机械效率为：0.6100%83.3%0.72W JW Jη==⨯≈有用总．故D 正确； 故答案为C【点睛】本题考查了使用滑轮组时有用功、总功、功率、机械效率的计算，根据题图确定n 的大小（直接从动滑轮上引出的绳子股数）是本题的突破口，灵活选用公式计算是关键． 4．如图所示的情景中，物体所受重力的示意图正确的是A．B．C．D．【答案】B【解析】【详解】因为重力的方向总是竖直向下的，而只有B选项中力的方向竖直向下，因此B选项正确．5．下列各图中的两个力，彼此平衡的是( )A．B．C．D．【答案】C【解析】【分析】【详解】A．两个力不是同一个物体，两个力不平衡，故A错误；B．两个力没在同一直线上，不满足二力平衡条件，故B错误；C．满足二力平衡条件，是一对平衡力，故C正确；D．两个力大小不相等，不满足条件，故D错误。
2017-2018学年第二学期教学质量检测八年级数学试题卷及答案注意事项：1. 本试卷分试题卷和答题卷两部分，试题卷共4页，三大题，满分120分，考试时间100分钟.2. 略一．选择题（每小题3分，共30分）1. 若二次根式3-x 有意义，则x 的取值范围是 【 】 A. X<3 B. x ≠3 C. x ≤3 D. x ≥32. 下列运算结果正确的是 【 】 A.()29-=-9 B. ()22-=2 C.26÷=3 D.525±=3. 平行四边形ABCD 的对角线AC 与BD 相交于点O ，要使它成为矩形，需再添加的一个条件是 【 】 A. AO=CO B. AC=BD C. AC ⊥BD D. BD 平分∠ABC4. 如图所示，直线a 经过正方形ABCD 繁荣顶点A ，分别过顶点B,D 作DE ⊥a 于点E ，BF ⊥a 于点F ，若DE=4,BF=3,则EF 的长为 【 】 A. 1 B. 5 C. 7 D. 125. △ABC 的三边分别为a,b,c ，其对角分别为∠A,∠B ，∠C.下列条件不能判定△ABC 是直角三角形的是 【 】 A. ∠B=∠A-∠C B. a:b:c=5:12:13 B. 222c a b =- D. ∠A:∠B:∠C=3:4:56. 如图，已知一次函数y=kx+b ，y 随着x 的增大而增大，且kb<0则在直角坐标系中它的图像大致是 【 】7. 如图，平行四边形ABCD 中，AB=4,BC=6,AC 的垂直平分线交AD 于点E ，则△CDE 的周长是【 】A.6B. 8C. 10D. 128.周末小丽从家里出发骑单车去公园，图中他在路边的便利店挑选一瓶库矿泉水，耽误以一段时间后继续骑行，愉快地到了公园，图中描述了小丽路上的情景，下列说法错误的是 【 】 A. 小丽从家到公园共用时间20分钟 B. 公园离小丽家的距离为2000米 C.小丽在便利店停留时间为15分钟 D.便利店离小丽家的距离为1000米 9.如图，菱形的两条对角线分别为6cm 和8cm ，则这个菱形的高DE 为【 】 A. 2.4cm B. 4.8cm C. 5cm D. 9,6cm10.已知，如图，△ABC 中，∠A=90°，D 是AC 上一点，且∠ADB=2∠C ，P 是BC 上任一点，PE ⊥BD 于E ，PF ⊥AC 于F ，下列结论：①△DBC 是等腰三角形；②∠C=30° ；③PE+PF=AB;④222BP AF PE =+,其中正确的结论是【 】A.①②B. ①③④C.①④D.①②③④二．填空题（每小题3分，共15分）11.如图P （3,4）是直角坐标系中一点，则点P 到原点的距离是 .12.如图，平行四边形ABCD 的对角线AC,BD 相交于点O ，且AC+BD=18，AB=6,那么△OCD 的周长是 .13.如图，在正方形ABCD 的内侧，作等边△EBC ，则∠AEB 的度数是 .14.如图，ABCD 是一块正方形场地，小华和小芳在AB 边上取定了一点E ，测量知，EC=30m,EB=10m,这块场地的对角线长是 .15.已知点A （-4,0）及第二象限的动点P （x ,y ）,且y-x =5,设△OPA 的面积是S ，则S 关于x 的函数关系式为 .三、解答题（本大题共8个题目，满分75分） 16.（10分）计算：()()()482-8-1827 1=+()()()()223353-5 2+++17. （8分）如图，已知正比例函数kx y =（k ≠0）经过点P （2,4）（1）求这个正比例函数的解析式；（2）该直线向下平移4个单位，求平移后所得直线的解析式.18. （9分）甲、乙两名射击运动员最近5次射击的成绩如下（单位：环）： 甲：7、8、6、8、9. 乙：9、7、5、8、6.（1）甲运动员这5次射击成绩的中位数和众数分别是多少？ （2）求乙运动员这5次射击成绩的平均数和方差.19. （9分）学完《一次函数》后，老师布置了这样一道思考题：已知：如图，在长方形ABCD 中，BC=4,AB=2，点E 为AD 中点，BD 和CE 相交于点P ，求△BPC 的面积.小明同学的思路是：以点B 为坐标原点建立“平面直角坐标系”，根据一次函数的知识点求出点P 的坐标，从而可求得△BPC 的面积，请你按照小明的思路解决这道思考题.20. （9分）如图，在△ABC 中，∠ABC=90°，D,E 分别为AB,AC 的中点，延长DE 到点F ，使EF=2DE,连接CF ，求证：四边形BCFE 是平行四边形.21. （8分）暑假期间，两位家长计划带领若干名学生去旅游，他们联系了报价为每人1000元的两家旅行社.经协商，甲旅行社的优惠条件是：两位家长全额收费，学生都按7折收费；乙旅行社的优惠条件是：学生、家长都按8折收费，假设这两位家长带领x 名学生去旅行，甲、乙旅行社的收费分别为乙甲，y y .（1）写出乙甲，y y 与x 的函数关系式；（2）学生人数在什么情况下，选择哪个旅行社合算？22. 如图，将一个三角板放在边长为1的正方形ABCD 上，并使它的直角顶点P 在对角线AC 上滑动，直角的一边始终经过点B ，另一边与射线DC 相交于Q.（1）当点Q 在DC 边上时，过点P 作MN ∥AD 分别交AB,DC 于点M ，N ，证明:PQ=BP （2）当点Q 在线段DC 的延长线时，设A,P 两点间的距离为x ，CQ 的长为y. ①直接写出y 与x 之间的函数关系式；并写出函数自变量的x 的取值范围；②△PCQ 能否为等腰三角形？如果能，直接写出相应的x 的值；如果不能说明理由.23. （12分）如图，一次函数4+-=x y 的图象与y 轴交于点A,与x 轴交于点B ，过AB 中点D 的直线CD 交x 轴于点C （-2,0）.（1）求A,B 两点的坐标及直线CD 的函数解析式；（2）若坐标平面内的点F ，能使以点B,C,D,F 为顶点的四边形为平行四边形，请直接写出满足条件的点F 的坐标.2017-2018学年第二学期教学质量检测八年级数学试题卷答案题号 1 2 3 4 5 6 7 8 9 10 答案DBBCDACCBB二、填空题11.5 ；12.15 ；13. 75°；14.40m;15. )0(-5 102<<+=x x y . 三．解答题16.（1）解：原式=2373422-2333+=++（2）解：原式=5-3+3+43+4=9+4317.解（1）把点P （2,4）代入kx y =得：4=2k k =2 ∴这个正比例函数是y=2x（2）平移后的直线解析式是y=2x+418. 解：（1）甲的中位数是8，众数是8； （2）乙的平均数是：）（6857951++++=7；()()()()[]27-67-87-57-95122222=+++=乙S19. 解：如图，由题意可得C （4,0）A （0,2），B （0,0） D （4,2）∵E 是AD 的中点，∴E （2,2）设BD 的函数解析式为kx y =，由题意得：4k=2 ∴21=k ，∴BD 的函数解析式为x y 21= 设直线CE 的函数解析式为b x k y +=/，由题意得：⎪⎩⎪⎨⎧=+=+2204//b k b k解得：⎩⎨⎧=-=41/b k ，∴直线CE 的函数解析式为4-+=x y解方程组⎪⎩⎪⎨⎧+-==421x y x y 解得⎪⎪⎩⎪⎪⎨⎧==3438y x 所以点P （3438，）∴△BPC 的面积：383442121=⨯⨯=•=P BPC y BC S △ 20. 证明：∵D,E 分别为AB,AC 的中点，∴DE ∥BC ，且BC=2DE∵F 在DE 的延长线上，且EF=2DE ，∴EF=BC ，且EF ∥BC ， ∴四边形BCFE 是平行四边形.21. 解:（1）200070010007.02000+=⨯+=x x y 甲1600800210008.0+=+⨯=x x y ）（乙（2）700x+2000=800x+1600 解得x=4当学生人数小于4人时，选择乙旅行社合算；当学生人数是4人时，两家收费一样；当学生人数大于4人时，选择甲旅行社合算.22. （1）证明：∵四边形ABCD 是正方形， ∴AB=DC ，∠BAD=∠D=90°，∠BAC=∠NCA=45° ∵MN ∥AD ，∴∠D=∠PNC=∠AMP=∠BMP=90°， ∴∠APM=∠NPC=45°，四边形ADNM 是矩形 ∴∠APM=∠BAC=∠NCA=∠NPC=45°AM=DN ， ∴PN=NC,AM=PM ∴BM=CN ∴PN=BM∵∠BPQ=90°，∴∠BPM+∠NPQ=90°，在Rt △BPM 中，∠MBP+∠BPM=90°∴∠NPQ=∠MBP ∴△BPM ≌△QPN ，∴BP=QP （2）①x y 21-=（220<<x ） ②△PCQ 可能成为等腰三角形．第一种情况：当点P 与点A 重合时，点Q 与点D 重合， PQ=QC ，此时，x=0．第二种情况：当点Q 在DC 的延长线上，且CP=CQ 时， 有：QN=AM=PM=22x ，CP==2-x ，CN=22CP=1-22x ，CQ=QN-CN=22x-（1-22x ）=2x-1，∴当2-x=2x-1时，x=1综上所述，当x=0或1时，△PCQ 成为等腰三角形．23. 解：把y=0代入y=-x+4得，x=4,∴点B （4,0） 把x=0代入y=-x+4得，y=4,∴点A （0,4） ∵D 为AB 的中点，∴D （2,2） 设CD 的解析式为b kx y +=由题意得：⎩⎨⎧=+-=+0222b k b k 解得：b=1,k=21∴CD 的解析式是121+=x y （2）∵B （4,0），C （-2,0）；∴BC=6当BC 是平行四边形的一边时，则DF ∥BC 且DF=BC=6,则F （8,2）或F （-4,2） 当BC 是平行四边形对角线时，DB ∥CF ，则F （0，-2）。
2018—2018学年度第二学期期末教学质量检测八年级英语试题卷(冀教)2018—2018学年度第二学期期末教学质量检测八年级英语试题卷(冀教) 2018—2018学年度第二学期期末教学质量检测八年级英语试题卷(冀教)2018—2018学年度第二学期期末教学质量检测八年级英语试题卷(冀教)温馨提示1、本试题分问题卷和答题卷两部分，请将所有答案填到答题卷上，在试题卷上答题不给分。
2、本试题满分120分，答题时间90分钟，请注意掌握好时间。
听力部分(20分)I．听句子．选出句中所包含的信息。
(共5小题，每题1分，计5分)1．A．father B．further C．farther2．A．ground B．playground C．round3．A．on March 21，2018 B．on March 31，2001 C．on March 31，20184．A．When you cross the street，you must be careful．B．When you are working，you must take care．C．When you cross the street，you must wait for the traffic lights．5．A．He is too short to reach the top of the tree．B．He is so tall that he can reach the top of the tree． C．He is standing under the tall tree．II．听句子．选出该旬最佳答语。
(共5小题，每题1分，计5分)6．A．Thank you very much． B．Just fine． C．Yes，you are right．。
2018年初中学业质量检查（二）英语试题（满分：150分考试时间：120分钟）本试卷分为第一卷和第二卷两大部分。
试卷内容：听力部分(20％）和笔试部分(80％）。
答第一卷时，请先将答案划在试卷上，再转涂到答题卡上。
答第二卷时，必须将答案写在答题卡相应的位置上。
第一卷I.听力（共三节，20小题，每小题 1.5分，满分30分）第一节听句子听下面五个句子，从每小题所给的三幅图中选出与句子内容相符的选项。
（每个句子读两遍）A B C1. AB C) 5. A B C4. A B C3. A B C2.第二节听对话听下面七段对话，从每小题所给的A、B、C三个选项中选出正确答案（每段对话读两遍）听第1段对话，回答第6小题。
6. What kind of music does Tom like best?A. Rock music.B. Classical music.C. Jazz music.听第2段对话，回答第7小题。
7. How did David come to work today?A. By bike.B. By subway.C. By taxi.听第3段对话，回答第8小题。
8. Where is the woman going?A. To the post office.B. To the library.C. To Central Park. 听第4段对话，回答第9小题。
9. What time does the museum open?A. 9:20.B. 9:30.C. 9:40.听第5段对话，回答第10、11小题。
10. What’s the probable relationship between the two speakers?A. Salesman and customer.B. Teacher and student.C. Mother and son.11. What color will the girl choose?A. Red.B. White.C. Purple.听第6段对话，回答第12、13小题。
2017-2018学年第二学期第二次质量检测八年级英语测试试卷2018.06【总分100分；考试时间60分钟】一、单项选择（共15小题，每题1分，满分15分）1.Mr Black broke his leg.He has just had______X-ray examination.____doctor said that he needed _____operation.A.a;The;anB.a;A;anC.an;A;anD.an;The;an2.My friends often give me lots of______on books.A.advisesB.pieces of advicesC.piece of adviceD.advice3.Many students didn’t realize the importance of study______they left school.A.whenB.untilC.asD.after4.The donations they have donated are used_______the poor.A.helpB.helpingC.to helpD.to helping5.Blind people have to live a hard life,________?A.have theyB.haven’t theyC.do theyD.don’t they6.George_____his hometown for10years.A.has leftB.has been awayC.leftD.has been away from7.--How many letters have you got from your online friends since last year?--____.We’re just chatting with each other when we’re free.A.NothingB.NoneC.NoD.No one8.—Can I go to the movies this evening,Mum?—Certainly.But you be back by ten o’clock.A.canB.willC.mayD.must9.—The World Cup once every four years.—So the next World Cup will be in2018.A.is only heldB.has only heldC.will only be heldD.was only held10.It's right______him_______his seat to the old lady on the bus.A.of;to giveB.for;not to giveC.of;not to giveD.for;to give11.—What a thick fog!I went the wrong way at the corner and finally got lost.—It’s easy to make a wrong turn here even under an ideal weather.A.conversationB.conclusionC.conditionmunication12.He didn’t make________clear when and where the meeting would be held.A.thisB.thatC.itD.these13.____________that there is another football match on the air this evening.A.It saysB.It was saidC.It is saidD.What was said14.Jack is_______funny________make us happy after class.A.so;thatB.too;toC./;enough toD.enough;to15.—Has she had________for the job?—Yes,she has taught English for more than10years.A.enough experienceB.enough experiencesC.many experiencesD.much experiences二、完形填空（共10小题，每小题1分，满分10分）Jim is interested in reading.One day,he wants to borrow a book from the16.He goes there17Jack.They can’t see18assistants there,only some robots standing there.Then Jim says to one of19,“Hey,give me a book.”But the robot20work.“What’s wrong21the robot?”he asks Jack.Jack tells him,“When you want22 something from somebody,you must23‘please’first.”So Jim says,“Please24me a book,Mr Robot.”Then the robot brings him the book.But again,Jim can’t take the book out of the robot’s hands.Jack says,“You must say‘Thank you’before you take the book.”25Jim says“Oh,thank you very much,Mr Robot.”Then he gets the book he wants from the robot’s hands.16.A.office B.shop C.library D.hospital17.A.to B.with C.from D.at18.A.a B.some C.the D.any19.A.a robot B.robots C.the robots D.robot20.A.isn’t B.don’t C.not D.doesn’t21.A.at B.with C.to D.about22.A.to borrow B.borrows C.borrowing D.to borrowing23.A.to say B.say C.says D.saying24.A.give B.gives C.to give D.giving25.A.But B.And C.So D.Or三、阅读理解（共12小题。
2017-2018学年第二学期八年级英语教学质量检测（二）一、听力测试（共27 小题，每小题1 分，共计27 分）第一节：请听下面8 段对话。
每段对话后有一小题，从题中所给的A、B、C 三个选项中选出最佳选项。
听完每段对话后，你都将有10 秒钟的时间回答有关小题和阅读下一小题。
每段对话读两遍。
1.How much time is there still left?A. At 3:00 pmB. Ten minutes.C. Fifteen minutes.2. Who didn’t answer the phone?A. Mark.B. AliceC. Bob3.What does the girl think of the story about Sleeping Beauty?A. Not very nice.B. Boring.C. Interesting.4.Why did Lily go to Beijing last weekend?A. For a trip.B. To see her grandparents.C. To go shopping.5. Does Jane like the elephant?A. We don’t know.B. No, she doesn’t. WhatC. Yes, she does6. What. does Jack like according to the conversation?A. Sports.B. Music. . Draw.7. Where is John on duty now?A. At the train station.B. At the bus stopC. At the bus station8. How many people are there in the girl’s family in Nanchang?A. Three.B. Four.C. Five第二节：请听下面5 段对话或独白。
2017-2018学年度第二学期期末教学质量检测八年级数学试题二1.选择题1.同类二次根式是指具有相同根指数和相同根式部分的二次根式。
因此，只有选项C中的3是同类二次根式。
答案为C。
2.统计量是用来描述数据分布情况的指标，平均数、中位数和众数都是常用的统计量。
对于销售情况，商场经理最关心的是销售量的中心趋势，因此中位数最有意义。
答案为B。
3.在赋值运算中，+=表示加等于，×___表示乘等于，÷=表示除等于，=表示赋值。
因此，选项D中的=是错误的。
答案为D。
4.方差是用来描述数据分布离散程度的指标。
题目中没有给出任何数据，因此无法计算方差。
答案为无。
5.选项①和③可以作为补充条件，使得四边形ABCD是正方形。
当AB=BC=AC=BD时，四边形ABCD是正方形。
选项②和④不能作为补充条件，因为它们无法保证ABCD是平行四边形。
答案为B。
6.爷爷沿着扇形的路径散步，因此他与家的距离s是时间t的函数。
根据扇形的性质，当爷爷沿着___走时，他与家的距离s保持不变，因此s与t之间的关系是线性的。
因此，答案为B。
7.根据勾股定理，AC²=AB²+BC²=12²+3²=153，因此AD²=AC²+CD²=153+4²=169，即AD=13.当AD=13时，∠ABD=90°。
因此，答案为A。
8.方差的性质是，对于任意常数k，数据x1k，x2k，x3k，…，xnk的方差等于原数据的方差。
因此，数据x15，x25，x35，…，xn5的方差也是7.答案为C。
9.根据相似三角形的性质，___，因此___。
根据角平分线定理，___=AB/BE，因此AG/BC=AB/BE，即AG=AB*BC/BE。
代入AE的式子中，得到AE=5*AG/BF=25/BE。
根据勾股定理，BE²=BF²+EF²，因此EF=√(BE²-BF²)=√(AB²+AF²-BF²)=4.代入AE的式子中，得到AE=25/BE=25/(AB+EF)=25/9.因此，答案为A。
初二英语质量检测 2018.02请将所有答案写在答题卡上一 听力部分 20 分一、根据所听到的对话内容，选择正确的选项。
（每小题1分）1. What sign can they see?A. B. C.2. Which organization does Jack’s sister work for?A. B. C.3. How will the woman go to Los Angeles?A. B. C.4.Where are they going tonight?A. B. C.5. When will the plane take off?A. 7:15.B. 7:00.C. 7:30.6. What kind of weather doesn’t the man like?A. Cloudy days.B. Hot days.C. Rainy days.7. Why is the boy still in the library?A. Because the book is interesting.B. Because he forgets the time.C. Because the bad weather prevents him from leaving.8. How long has the woman been here?A. For 5 minutes.B. For 20 minutes.C. For 15 minutes.9. How much more money does the man need to buy the book?A. 15 yuan.B. 10 yuan.C. 5 yuan.Sichuan Restaurantcinema10. What does the man think of the film?A. Wonderful.B. Boring.C. Interesting.二、根据所听到的对话或短文内容，选择正确的选项。
（每小题1分）听第11段材料，回答第11-12小题。
11. How many times has the boy read the novel?A. Never.B. Twice.C. Three times.12. What will the girl probably do?A. She’ll borrow the novel.B. She’ll go to buy the novel.C. She’ll work in the bookshop.13. A. eighteen B. sixteen C. seventeen14. A. in a computer company B. in the bank C. in the office15. A. a small room B. a big office C. a small hotel听第13段材料，回答第16-20小题。
16. Why was Father’s Day started?A. Because there was a Mother’s Day.B. Because few countries have a Father’s Day.C. Because people liked their fathers very much.17. Where was Father’s Day started?A. In China.B. In Australia.C. In America.18. Which of the following is TRUE?A. Father’s Day has a long history.B. Father’s Day has a short h istory.C. Mother’s Day has a shorter history than Father’s Day.19. What’s the writer’s idea?A. Father’s Day is getting popular.B. Father’s Day is a public holiday in China.C. Fathers work harder than mothers.20. What is the real mea ning of Father’s Day?A. To buy presents for fathers.B. To tell children what to do.C. To show love for fathers.二笔试部分一选择15分1. Millie ________ be here now because she has just gone to Paris.A. needn’tB. mustn’tC. can’tD. may not2. ----It’s too hot. Would you mind _______ the door?----_______, please do it now.A. to open; OKB. opening; Certainly notC. opening; Of courseD. to open; Good idea3. Robin broke his left leg in the basketball match last week, since then he __________ in bed.A. layB. has lainC. laidD. has laid4. — Why do English people talk so often about the weather when they start a conversation? — Because the weather is a __________ subject.A. seriousB. goodC. closeD. safe5. The librarian told us that we could borrow at most three books __________.A. at a timeB. all the timeC. from time to timeD. on time6. The door is __________ narrow for the elephant __________.A. too; to goB. enough; to goC. so; to go toD. too; to go through7. Not only the twins but also their cousin _________ Japan for half a year, but ________ of them can speak Japanese.A. has been in; neitherB. has been to; eitherC. has been in; noneD. have been in; none8. —The secretary’s already on the way to the company, __________ she?— __________. She was badly hurt in the accident and sent to the hospital.A. hasn’t; YesB. hasn’t; NoC. isn’t; YesD. isn’t; No9. — Mrs. Liu, can I pass the final exam if I start working hard from now on?— Of course. __________.A. Better late than neverB. Practice makes perfectC. Actions speak louder than wordsD. Many hands make light work10. The colour of this book is similar to ________ of mine.A. itB. oneC. thatD. this11. ----What ________ useful advice the foreigner gave you!----Yes. The foreigner from _________European country is really kind.A. a; aB. a; anC./; anD. /; a12. John______ drive to work, but now he______ riding a bike there.A. was used to; is used toB. used to; used toC. was used to; used toD. used to; is used to13. ---- I’m sorry to have kept you waiting so long.---- Never mind. I_____ here for only a few minutesA. have beenB. have been toC. have arrivedD. have been in14. —Sir, please put out your cigarette (香烟).—Sorry. I ____ the sign.A. don't noticeB. didn't noticeC. haven't noticedD. won't notice15. --- What would you like to drink, tea or coffee?--- ____________ is OK. They are both my favorite.A. BothB. AllC. EitherD. None二完型填空10分Robby was 11 years old when his mother sent him to have his first piano lesson. I always think that a good learner should begin at his 1 age, but Robby said that it had always been his mother’s dream to hear him play the piano. So I 2 him as a student.Robby didn’t have a basic 3 of music, but he tried very hard. However, he continued and at the end of each weekly lesson he’d always say, “My mom is going to hear me play some day.”But it seemed 4 . He didn’t have a natural ability for music.One day Robby stopped coming to our lessons. He told me that his mom had been sick and unable to take him to piano lessons, but he was still 5 .He asked if he could take part in my concert (音乐会) and I 6 .The night of the concert came. The concert hall was 7 with parents, friends and relatives. The concert was going well. Then, Robby came on stage (舞台). Loudly and clearly he said that he had chosen Mozart’s Concerto No 21 in C Major. I was not prepared for what I heard next. His 8 danced on the keys.He played so well that everyone was on his feet, clapping (鼓掌) excitedly. In tears (眼泪), I ran up on stage, “Oh, Robby! How could you do it?”“Well, Miss Hondorf, remember I told you my mom was sick? Well, the fact is that she h ad a serious blood disease and passed away this morning. And well… she was born 9 , so tonight was the first time she ever heard me play. I wanted to make 10 special and show her I could do it! My mother’s dream came true at last.”1. A. bigger B. larger C. later D. earlier2. A. received B. protected C. knew D. accepted3. A. education B. sense C. information D. knowledge4. A. harmless B. helpless C. hopeless D. meaningless5. A. writing B. practising C. singing D. talking6. A. agreed B. disliked C. expected D. decided7. A. covered B. bored C. filled D. enjoyed8. A. fingers B. feet C. voice D. legs9. A. blind B. deaf C. strong D. tiny10. A. her B. me C. it D. us三阅读理解每题2分, 共20分AA reader wrote to say that she was feeling left out at break because her best friend wasn’t around. Here’s our advice to her—and to all kids who feel lonely sometimes.It’s hard when a best friend isn’t around—maybe because she moved to a different school or a different class. You may feel lonely at break or lunchtime. You want to have new friends, but how do you make them? Maybe it seems that everybody else already has their friends. But remember, there’s always room for more friends.Start by looking around your classroom—think about which kids you’d like to play with at break. Look for chances to say hi to them, smile, and be friendly. Offer to share something or express your appreciation(欣赏)to them. Invite someone to play with you or say “Do you want to sit here?” in the lunchroom. When you’re at break, walk over to kids you want to play with and say “Hi, can I play, too?” or just join in.If you find it difficult to do this or if you’re feeling shy, ask your teacher to help you make new friends. Teachers are usually pretty good at matching up friends. The best way to make friends is to be a friend. Be kind, be friendly, share, say nice things, offer to help—and pretty soon, you’ll have one, or two, or even more new friends.You might still miss that special best friend. But when you see each other, you can share something you didn’t have before she left: You can introduce her to your new friends!1. This text is written for ____________.A. teachersB. parentsC. studentsD. visitors2. The expression “feeling left out” means “ ____________” in Chinese.A. 受冷落B. 被调侃C. 挨批评D. 遭攻击3. So me kids need help from teachers to make friends because ____________.A. they miss their old friends a lotB. they have no time to stay with othersC. teachers know who wants a new friendD. they are shy or not good at making friendsBWeekday mornings are very busy for US middle school students. When your school doesn’t have a bus, and you live too far away to walk, you need a carpool (拼车). A carpool is a group of people sharing the responsibility (责任) of driving to school in the morning. There are usually four or five kids in a carpool and their parents take turns to drive the kids in their cars.Someone’s car smells like wet dogs. Some kids get to eat desserts (甜点) for breakfast and some parents shout so much that all you try to do is to stay quiet and go unnoticed. When your mom or dad drives the carpool, your classmates get a close-up look at how strange your parents can be. It might be your first sociological (社会学) study and your first time to work with others.Teamwork is really important in the carpool because nobody wants to make everyone else late. It’s a great lesson in responsibility. Imagine (想象) sitting in the car outside of a classmate’s house, watching the clock and counting the seconds. Then you start to understand how your carpool friends might feel when you are still inside the house at 7:48. You really begin to learn all your real life lessons just moments before the start of school—in the carpool.4. What is a carpool?A. Parents take turns to drive their kids to school.B. Parents drive kids to schools on their way to work.C. Kids go to school in their parents’ cars.D. Kids drive their own cars to school.5. What can students learn from a carpool?A. How to drive a car.B. How to get along with others.C. What to do with parents.D. Real teamwork.6. Which of the following is TRUE?A. If kids live far away from school, they are always late for school.B. US children enjoy carpooling better than taking a school bus.C. Kids can learn real life lessons in a carpool.D. Kids often have enough time to study in a carpool.CEverybody makes decisions in daily life. They can be as important as what you will do in the future or as simple as what you will eat for breakfast. Any decision could be the turning point of your life.I made an important decision when I was in Junior 3.Before I made that decision I was one of the boys who tried too hard to act as an adult. I didn’t know that only kids want to show themselves as adults.I didn’t listen to my parents and teachers, and my grades became poor. Then came the high school entrance exam.At the turning point of my life, my mom wanted to have a conversation with me. I wanted to turn it down but when I looked at her eyes, I felt I couldn’t refuse. Instead of asking me to study hard, to my surprise, Mom just asked what I wanted to do in the future. Without thinking too much, I just said I would like to study hard.Mom smiled and asked again: “I asked: what do you WANT to do?”I never seriously thought about the question. So, I kept silent.“Whether you want to go on studying or enter the society,” she went on, “it is your own decision. Your life ought to be decided by you, not by anyone else, including me. ” After saying that, she had tears in her eyes.For the first time in my life I was asked to make my own decision. I sat in my chair and thought about myself, my life and what kind of person I wanted to become.It took me what seemed to be ages to make the biggest decision so far in my life—I wanted to be a man who makes a difference in the world. To achieve that, I needed to study hard.The path to my future became clear to me. I didn’t act rebelliously(叛逆地) any more. With passion (激情) in my heart, I studied hard.Now, I’m 17 and I’m in one of the best schools in my city, in one of the best classes at the school and I am one of the best students in the class.Thanks to that decision, I have become what I am today.7. When did the writer make the important decision?A. After he was 17 years old.B. After he was in one of the best classes.C. When he was a pupil.D. When he was studying in Junior 3.8. What was the writer like before the decision?A. His grades became poor.B. He tried too hard not to act as an adult.C. He was one of the top students in his class.D. He did what his teachers and his parents asked him to do.9. How did the writer make the decision?A. It was easy for him to make the decision.B. It was his second time to make the decision.C. He made the decision seriously.D. It was his mother that made the decision for him.10. Which of the following is TRUE?A. The writer made the decision that he should work hard.B. It took the writer several years to make the decision.C. After hearing his mother’s words, the writer had tears in his eyes.D. At the turning point of his life, the writer wanted to have a conversation with his mother.四填空10分(A) 根据句意及中文提示, 完成句子.1.Shenzhen used to be a little fish village __________ (在…对面) Hong Kong, but now it has turned into a modern city.2.Can you help me to write an_____________ (介绍)to your talk?3. The result of the writing competition is still under _______________ (讨论).4. We have finished one of the______________ (项目)on time．5.Just when I was ready to leave the__________（停车）place, another car crashed into mine.(B) 根据句意, 用所给单词的适当形式填空.6. ---What do you think of the city?---Wonderful! I_______ (stay) here for another two years.7. Mr. Wu, together with his wife __________ (prepare) for their son’s birthday party from 2 to 4 yesterday afternoon.8. We were happy because our dream __________ (come) true at last.9. ------Where is your mum, Sandy?------She _________(cook) some food for the party in the kitchen.10. Many people don’t understand the ___________(important) of the wetlands.五任务型阅读5分Every day, it is easy to see advertisements in English all around us. Look at your own bags and clothes, and at the bags and clothes of your classmates. How many different advertisements can you see which use English words?Often bags and clothes show the name of the company that made them. This is a popular form. Sometimes designers use a special picture or symbol called a logo. Logos appear(出现) on many different products(产品). They are popular because when you see a logo, it is hard to forget that product or company.It is common to see advertisements on TV and hear them on the radio. Most advertisements are very short. Sometimes the advertisers use a short sentence which is easy for people to remember. Nike, for example, has a simple English sentence all around the world: “Just do it.” Advertisements often use funny situations as well. It is simple to remember it.All advertisements are designed to make people buy a product. An advertisement for a soft drink, for example, might show a group of young people who are having fun. The young people are al1 drinking the soft drink. Advertisers are saying to you, “Why don’t you buy this drink and be like these people? You can be young and modern.”You might think that advertisements are not after you, but the next time you buy a soft drink，ask yourself this question: Why am I buying this special product?根据短文内容和首字母提示，在下文空格处填入适当的词使短文完整。
