2015年香坊区理综初中毕业学年调研测试及答案
黑龙江省哈尔滨市香坊区初中理化毕业学年调研(二模)试题(扫描版)
黑龙江省哈尔滨市香坊区2015届初中理化毕业学年调研（二模）试题物理参考答案及评分标准一、单项选择题: （每小题2分，共24分）题号16 17 18 19 20 21 22 23 24 25 26 27 选项 A C D A B A D B D C C C三、非选择题: (共计46分，未注明分值的题目每空1分)36、(2分)火（或相）；总功率过大。
37、(2分) 振动；音调。
38、(2分) 前者由于光的折射而形成的；后者是由于光的反射而形成的。
39、(2分) 同种液体内压强随深度的增加而增大；1.2×105. 40、(2分) 热胀冷缩；39.3（3后有估读不扣分）。
41、（２分）b ；改变电流方向或改变磁场方向（对调NS 或电源正负极互换）（意思正确即可） 42、（2分）200；热。
43、（2分）热值；比热容。
44、（2分）73.4；3.67。
45、(2分)状态；晶体。
46、(2分) 如右图,每个点各1分。
47、（2分）如右图,完全正确得2分，开关连错扣1分。
48、(5分) 每个空1分。
（1）刻度尺；像到平面镜的距离与物到平面镜的距离的关系 （或像距与物距的关系）。
（2）平面镜所成的像与物的大小相等；B ；（3）不变。
49、(5分) （1）%7.66%1003.011.02%100%100111=⨯⨯⨯=⨯=⨯=S F h G W W 总有η %3.83%1003.021.05%100%100222=⨯⨯⨯=⨯=⨯=S F h G W W 总有η 2分 %9.88%1003.031.08%100%100333=⨯⨯⨯=⨯=⨯=S F h G W W 总有η 因：G 1＜G 2＜Ｇ3， 而η1＜η2＜η3 （1分） （上面没乘100%不扣分） 结论：同一滑轮组，所提升的物重越重，滑轮组的机械效率越高。
（1分） （2）η4 ＞η5 （1分） 50、（6分）（1）如图（1分） （2）0.75 (1 分)(3 ) (2分：项目第一行1分, 三行数据1分 第一行也可“电压表示数/V 、灯泡的电压/V …”)次 灯泡的 电压/V 灯泡的 电流/A 灯泡的 功率/W 1 6－3＝3 0.36 1.08 2 6－2.2＝3.8 0.40 1.52 36－1.5＝4.50.441.98①1.52 （1分） ②当U 实＜U 额时，P 实＜P 额；当U 实＞U 额时，P 实＞P 额。
2015年香坊区初中毕业学年调研测试(一)
2015年香坊区初中毕业学年调研测试(一)九年理化综合试题可能用到的相对原子质量：H一1 C一12 0一16 S一32 Ca—40 Fe—56一、选择题：(每小题只有一个答案正确)1．哈尔滨绕城高速公路的开通使得过境车辆不再进入咯尔滨市区，极大缓解了哈尔滨市的交通压力。
下列相关说法中错误的是 ( )A.绕城高速的建成，对解决橙花江两岸交通不畅现状，拉动黑龙江省经济发展、建立新型高效物流系统起到至关重要的作用B．修路所用的沙子、水泥都属于复合材料C.高速公路路面所铺的沥青是石油分馏得到的D.新型防水材料的使用将延长公路的使用寿命2.下列过程中没有发生化学变化的是（）3.下列结构示意图能表示元素周期表中同一横行原子的是 ( )4.下别实验操作错误的是（）A.①②③ B．①② C.①③④ D．①5.下列应用的原理(用化学方程式表示)及基本反应类型均正确的是 ( )6.下列实验现象的描述正确的是 ( )A.红磷燃烧放热，产生大量自烟，发出蓝紫色火焰B.铁丝在空气中剧烈燃烧，生成黑色固体C．硫酸铜溶液与氢氧化钠溶液混合，产生红褐色沉淀D．一氧化碳还原氧化铜，黑色圈体变成紫红色7.下列叙述错误的是( )A.香烟的烟气中含有几百种有毒物质B．未成年人处在生长发育阶段，需要摄入比成年人更多的钙C．维生素多数在体内不能合成，需要从食物中摄取D. 草木灰是一种农家肥，主要成分硫酸钾8.下列法做错误的是 ( )A.做馒头对，常在发酵团中加入适量的纯碱，使面团疏松多孔B．用食醋除去水壶中的水垢C. 用水基型灭火器扑灭图书、档案的失火D．用活性炭除去水中的异昧9.维生素C又称抗坏血酸，纯学式为C6H8O6，对提高人体免疫力有很大帮助。
下列关于维生素C的说法中正确的是( )A．一个维生素C分子中含有176个质子B．维生素C出碳、氢、氧三种原子构成C．维生素C是一种有机化合物D.维生素C中碳元素的质量分数最大11.下列有关资源的叙述不正确的是（）A．天然气是最清洁的燃料B. 稀土有“工业的维生素”的美誉，是不可再生的重要战略资源C.地球表面约71％被水覆盖D.空气的成分按体积计大约是：氧气21％、氮气78％、稀有气体等其它成分l％12.下列区分各物质的两种方案都合理的是（）A.t l℃时，A、B的溶解度相等B.t2℃时，A、B的饱和溶液降温到t l℃时，析出A的质量一定比B多C．A、B两种物质的溶解度都随温度升高两增大D．当A中含有少量B时，可以用冷却热饱和溶液的方法提纯14.除去下列混合物中的杂质，所加试荆及操作方法均正确的是（）15．为测定煅烧一段时间后的石灰石(成分为碳酸钙和氧化钙及15%的不含钙的杂质)中钙元素的质量分数，某同学取l00g该石灰石继续煅烧，充分反应后，称量剩余固体的质量为78g，则该石灰石中钙元素的质量分数为( )A.35％ B．45％ C．55％ D．65％二、非选择题(28——35题，共40分)28．(6分)中学生正处在生长发育的关键阶段，需要摄入均衡的营养。
黑龙江省哈尔滨市香坊区2015年初中毕业学年调研测试(三)理综化学试题(扫描版)及答案
2015年香坊区初中毕业学年调研测试(三)九年理化综合试题参考答案及评分标准（化学部分）说明：化学方程式中条件、配平答错或没答扣1分；化学式、化学名词错误不得分；沉淀符号、气体符号、错别字、字母书写不准确、漏字等错3个扣1分。
简答问题其它答法合理的酌情给分。
一、选择题（每小题2分，合计30分）题号1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 选项 B D B C B D B D D B C D C A A二、非选择题（除特殊标明的分值外，其余每空各1分，合计40分）28（6分）（1）①疾病（0.5分） ②身体健康（0.5分） （2）①CO(NH 2)2 ②叶、茎（0.5分）③蛋白质（0.5分） ④2NH 4NO 3+Ca(OH)2===Ca(NO 3)2+2H 2O+2NH 3 ↑（2分）⑤ -3价、+5价29.（6分）（1）化学能转化为内能转化为机械能转化为电能（转化写成→也可以）（2）①煤充分燃烧，主要生成二氧化碳，减少一氧化碳、炭黑颗粒的产生，减少空气污染，充分燃烧放热多，节约能源。
②二氧化硫（0.5分）、二氧化氮（0.5分）（写化学式也可以）（3）A(4) ①减小 ②C 4H 1030．（3分）（1）2SO 2+O 2=======2SO 3（2）二氧化硫分子，参加反应的氧分子（3）在化学变化中，分子分解成原子，原子重新构成新分子31.（7分） （1）①长颈漏斗 ②MnO 2 ③2KClO 3====2KCl+3O 2↑（2）①装置的气密性（0.5分） ②连续并比较均匀（0.5分）③导管移除水面（0.5分） ④熄灭酒精灯（0.5分）（3）画图2分，错1处扣1分，扣完为止。
（图略，见教材45页）32（2分）（1） 隔离可燃物 （2）①⑥（1） 使可燃物与空气隔绝 （2）②④催化剂 高温 MnO 2（1）使可燃物的温度降到着火点以下（降低温度）（2）③⑤33．(4分)（1）（2分）CuSO4+Ba(OH)2==Cu(OH)2↓+BaSO4↓（1分）CuSO4+Mg===MgSO4+Cu（1分）（2）红棕色固体逐渐减少（消失），溶液由无色变为黄色（3）如图（四个化学式都写正确得1分）34（6分）（1）溶液由红色变为无色（0.5分）（2）氯化钠、氯化氢（NaCl HCl）（0.5分）（3）氢氧化钠、碳酸钠（NaOH Na2CO3）（0.5分）（4）（2分）碳酸钠与盐酸反应产生二氧化碳气体（Na2CO3+2HCl==2NaCl+H2O+CO2↑），根据现象可知实验一废液中的溶质是NaCl HCl，实验二废液中的溶质是NaOH Na2CO3，氢氧化钙和碳酸钠在溶液中不能共存（1分），碳酸钙不溶于水（0.5分），所以废液中一定没有氢氧化钙，也不能有碳酸钙，也就不可能和盐酸生成氯化钙，溶质不可能有氯化钙（0.5分）（5）紫色石蕊溶液（合理即可）（0.5分）（6）紫色溶液变成红色（合理即可）（7）各溶质之间能否共存（是否反应），溶液的酸碱性35.（6分）（1）NaCl+AgNO3===AgCl↓+NaNO3（2）58.5/143.5=X/5.74g（3）23.4%（0.5分）不相符（0.5分）（4）6.8%（5）（2分）氯化钠质量逐渐减少到零，硝酸钠质量从零逐渐增大到不变，谷氨酸钠质量始终不变（三种溶质都写对得2分，写出两种得1分，只写出一种不得分）。
黑龙江省哈尔滨市香坊区2015届九年级上学期期末学业水平调研理化考试试题
香坊区2015年1月份期民末学业水平调研测试九年级理化试题物理部分一、单项选择题：（每小题2分，共24分。
每小题只有一个答案正确）1．在国际单位制中，电功的单位应是( )A．千瓦 B. 千瓦时C．焦耳 D.焦耳/秒2．下列现象中，不能说明分子不停地做无规则运动的是( )A．香水气味B．雪花飞舞 C.桂花飘香 D.饭香扑鼻3．下列用电器中，利用电流热效应工作的是( )A．电风扇B．电冰箱C．电视机 D.电熨斗4．在下图所示的实例中，通过热传递改变物体内能的是( )5．如图所示试管中装有水，用带玻璃管的胶塞塞住，在玻璃管口处放一个纸做的小叶轮，加热试管使水沸腾后，小叶轮转动。
下列说法正确的是( )A．小叶轮的转动是热传递的结果B．小叶轮的转动是内能转化为机械能C．小叶轮的转动是机械能转化为内能D．内燃机中压缩冲程与此相同6．关于磁现象，以下说法中不正确的是( )A．磁极之间的相互作用不都是通过磁场发生的B．磁感线是为了描述磁场而引入的假想曲线C．同名磁极相互排斥，异名磁极相互吸引D. 磁体周围的磁感线从磁体的N极出发，回到磁体的S极7．一般家庭卫生间都安装有照明灯和换气扇，使用时，有时需要它们各自独立工作，有时又需要它们同时工作。
下列电路图中，符合上述要求的是( )8.关于导体的电阻，下列说法正确的是( )A．导体电阻大小取决于通过它电流的大小，电流越小的导体电阻越大B．导体电阻大小取决于加在它两端电压的大小，电压越大的导体电阻越大C．在相同温度下，长度相同的两段镍铬合金丝，粗的比细的电阻小D．同一段钨丝，当其温度升高时，电阻将变小9．如图所示电路，开关闭合时观察到：灯泡不亮，电流表无示数，电压表有示数。
以下原因可能的是( )A．灯泡L开路B．电阻R开路C．灯泡L短路D．电流表短路10．如图所示的电路中，电源电压保持不变，闭合开关S后，将滑动变阻器的滑片向右移动，下列说法中正确的是( )A. 电压表与电流表示数的比值变大B．电流表示数变小，电压表示数不变C．电流表示数变大，电压表示数变大D. 电流表示数变小，电压表示数变小11．如图所示，电源电压18V且保持不变，电流表接0—0.6A量程，电压表接0—15V量程，灯泡上标有“6V 3W”字样，不考虑温度对灯丝电阻影响，则下列计算正确的是( )A．灯泡正常发光时的电流为0.2AB．当电流表的示数为0.4A时，电压表的示数为4.8VC．为了保证电路的安全，滑动变阻器允许接入的最大阻值为36ΩD．为了保证电路的安全，滑动变阻器允许接入的最小阻值为24Ω12．如图所示电路，电源电压12V保持不变，若改变变阻器滑片P的位置，两个电压表及电流表的示数将发生相应的变化，V1和V2两电压表示数变化量大小与电流表示数变化量大小的关系图像分别为图中①和②直线所示。
香坊八年期末
香坊区2015年1月份学业水平调研测试八年数学试题参考答案一、单项选择题（每小题3分，共30分）1．B 2．D 3．C 4．A 5．B 6．C 7．A 8．C 9．B 10．D 二、填空题：（每小题3分，共计30分）11．x ≠-2 12．2 13．0 14．2)1m (a - 15．4 16．x=5 17．100° 18．27 19．4或8 20．16 三、解答题 21．（本题8分）计算：（1）()()23xy 5x 2-⋅ （2）yx 2y 3x 43÷ =)xy 5(x 2233-⋅⋅ … 1分 =3x2y y 3x4⨯ … 1分 =)xy 5(x 823-⋅⋅ … 1分 =3x 2y 3y x 4⋅⋅ … 1分=23xy x )5(8⋅-⨯ … 1分 =yx 6x y 43… 1分=24y x 40- … 1分 =2x 32… 1分22．（本题8分）计算：(1) )3223)(3223(-+=22)32()23(- … 2分=18-12 … 1分=6 … 1分 (2) 352623(9-6)3a b a b a b ÷=3523262393-63a b a b a b a b ÷÷ … 2分 =233-2ab b … 2分23．（本题8分）（1）画图正确… 2分，B 1（4,2）… 2分； （2）画图正确… 2分，P （2,0） … 2分． B 1C 1BC-4-11234567-5-3-2-1123465OxyAP24．（本题8分）原式=x 24x x 2x 2-÷- … 1分 =4x x2x 2x 2-⋅- =)2x )(2x (x2x 2x -+⋅- … 2分 =2x 2+ … 1分 1)21(62x --⨯==1)21(162-⨯ … 1分=232- … 1分原式=2x 2+ =22322+- … 1分=31=33… 1分 25．（本题8分）（1）解：设每件乙种零件的进价为x 元，则每件甲种零件的进价为54x 元，由题意得 4x 1600x 541600+= … 1分 解得x=100 … 1分 经检验x=100是原方程的解 … 1分所以54x=80 … 1分答：每件甲种零件的进价为80元，每件乙种零件的进价为100元.（2）解：设该商店购进甲a 件甲种零件)a 110)(100130(a )80100(--+-≥3000 … 2分解得a ≤30 … 1分 因为a 为正整数26．（本题10分）（1）证明：如图1，延长BC 、AE 交于点P∵AE 平分∠BAD ∴∠1=∠2 ∵AD ∥BC ∴∠2=∠P∴∠1=∠P … 1分 ∴AB=PB … 1分 ∵BE 平分∠ABP∴BE 是等腰三角形ABP 的中线 ∴AE=PE … 1分 又∵∠AED=∠PEC ∠2=∠P ∴△AED ≌△PEC ∴AD=PC … 1分 又∵BP=BC+CP∴AB=BC+AD … 1分21PC EBAD4321PNM FC EB AD（第26题图1） （第26题图2）（2）方法一：如图，过F 作FM ⊥BE 于M ，过M 作MN ⊥AB 于N∵AD ∥BC ∴∠ABC+∠DAB=180° 又∵∠ABC=90° ∴∠DAB=90° ∵AE 平分∠BAD ，BE 平分∠ABC ∴∠1=∠2=45°，∠3=∠4=45° ∴∠1=∠2=∠3=∠4=45°∴AE=BE ，∠AEB=90° … 1分 ∵EF ⊥CD ∴∠CEF=90° ∴∠AEB=∠CEF∵∠AEB=∠AEF+∠BEF ，∠CEF=∠BEC+∠BEF ∴∠AEF=∠BEC∴△AEF ≌△BEC ∴EF=EC … 1分 ∵∠BCD=75° ∴∠BEC=60° ∴∠MEF=30° ∵FM ⊥BE ∴∠BMF=∠EMF=90°∴∠BFM=45° ∴∠BFM=∠3=45° ∴BM=FM ∵MN ⊥BF ∴∠BNM=90°，BN=FN=21BF ∵BF=2 ∴BN=1 ∴∠BMN=45° ∴∠BMN=∠3=45° ∴MN=BN=1 ∵M F M B 21N M F B 21S MF B ⋅=⋅=△ 即FM FM 211221⋅⨯=⨯⨯ ∴FM=2 … 1分 在Rt △EMF 中，∠MEF=30° ∴FM=21EF ∴EF=22 … 1分 由（1）知△AED ≌△PEC ∴DE=CE ∴DE=CE=EF∴CD=DE+CE=2EF=24 … 1分（2）方法二：如图，连接CF 、DF∵AD ∥BC ∴∠ABC+∠DAB=180° 又∵∠ABC=90° ∴∠DAB=90° ∵AE 平分∠BAD ，BE 平分∠ABC ∴∠1=∠2=45°，∠3=∠4=45° ∴∠1=∠2=∠3=∠4=45°∴AE=BE ，∠AEB=90° … 1分 ∵EF ⊥CD ∴∠CEF=90° ∴∠AEB=∠CEF∵∠AEB=∠AEF+∠BEF ，∠CEF=∠BEC+∠BEF ∴∠AEF=∠BEC∴△AEF ≌△BEC ∴EF=EC … 1分 ∴∠EFC=∠ECF=45°∵∠BCD=75° ∴∠BCF=∠BCD -∠ECF=30° 在Rt △CBF 中，∠BCF=30° ∴BF=21CF 又∵BF=2 ∴CF=4 … 1分 由（1）知△AED ≌△PEC ∴DE=CE∴EF 是CD 的垂直平分线， ∴DF=CF=4 …1分 ∴∠FDC=∠FCD=45°∴∠CFD=90° ∵CD=CE+CE ∴EF=21CD ∵CD EF 21DF CF 21S CFD⋅=⋅=△ 即CD CD 21214421⋅⨯=⨯⨯ ∴CD=24 … 1分(其他方法请酌情给分)几个主要采分点1.AE=BE ；2.全等证CE=EF 或DE=EF ；3.在直角三角形中，30°角多对的直角边等于斜边的一半；4.证DF=CF ；5.结论244321FCEB AD27. （本题10分）在Rt △AOC 中，∠ACO=30° ∴AO=21AC ∴AC=4 … 1分 ∵∠ACB=90° ∴∠ABC=30°在Rt △ACB 中，∠ABC=30° ∴AC=21AB ∴AB=8 ∴OB=AB-OA=6 ∴B （6,0） … 1分（2）过P 作PM ⊥AB 于M∵P 的横坐标为t ∴OM=t ∴AM=t+2∵∠BAC=60°，∠AMP=90° ∴∠APM=30°在Rt △AMP 中，∠APM=30° ∴AM=21AP ∴AP=2AM=2t+4 … 1分∴PC=AP -AC=2t∵PQ ∥AB ∴∠Q=∠ABC=30°… 1分∵∠PCQ=∠ACB=90°在Rt △PCQ 中，∠Q=30° ∴PC=21PQ ∴d=PQ=2PC=4t … 1分（3）答：∠APB -∠OEB=30°… 1分理由如下：过P 作PM ⊥AB 于M ，交BC 于点F ，连接OF ，过O 作ON ⊥BC 于N ∵PM ⊥OB ，ON ⊥BC ∴∠OMP=∠ONE= 90°由（2）知PA=2t+4，d=4t∵PA=65d ∴2t+4=65×4t ∴t=3 … 1分 ∴OM=3 ∵OB=6 ∴BM=OB -OM=3 ∴OM=BM∴PM 是线段OB 的垂直平分线∴OF=BF ，OP=BP … 1分 ∴∠FOB=∠FBO=30°，∠OPM=∠BPM∴∠OFN=∠FOB+∠FBO=60°，∠OFM=90°-∠FOM=60°∴∠OFN=∠OFM∴ON=OM又∵OE=PB∴OE=OP∴Rt △ONE ≌Rt △OMP … 1分 ∴∠OEB=∠OPM∴∠OEB=∠BPM∵∠APB -∠BPM=∠APM 由（2）知∠APM=30°∴∠APB -∠OEB=30° … 1分M Q B C A O xy P N F E Q P M B CA O x y。
哈尔滨市香坊区2015-2016学年度上学期学期期末调研测试八年级物理试卷
香坊区2015—2016学年度上学期教育质量综合评价学业发展水平监测物理学科(八年级)考生须知：1．本试卷满分为100分，考试时间为70分钟。
2．答题前，考生先将自己的“姓名”、“准考证号码”在答题卡上填写清楚，将条形码准确粘贴在条形码区域内。
3．考生作答时，请按照题号顺序在答题卡各题目的区域内作答，超出答题卡区域书写的答案无效；在草稿纸、试题纸上答题无效。
4．选择题必须用2B铅笔在答题卡上填涂，非选择题用黑色字迹书写笔在答题卡上作答，否则无效。
5．保持卡面清洁，不要折叠、不要弄破、弄皱，不准使用涂改液、修正带、刮纸刀。
一、单项选择题（每题2分，共15题30分）1．下面四个单位中，哪个是用来表示声音强弱的单位（）A．分贝B．纳米C．赫兹D．千克2．在水、空气、酱油、铁这几种常见物质中，其中密度最大的物质是（）A．铁B．水C．酱油D．空气3．人们能通过声音分辨出琴声和笛声的主要依据声音的（）A．响度B．音调C．音色D．振幅4．小明每天骑自行车上学，他看到路边的小树向后“飞过”．则他选择的参照物是（）A．自行车B．地面C．小树D．路边的楼房5．下图中所列仪器不是用来测量物体长度的是（）A．卷尺B．游标卡尺C．千分尺D．机械停表6．下列说法中不正确的是（）A. 学生配带凹透镜可以矫正近视眼B. 声波和光波都能传播信息和能量C. 光在真空中的传播速度为3×108m/sD. 声音在真空中的传播速度为340m/s7．如图所示，能正确描述匀速直线运动各物理量之间关系的图像是（）A B C D8．关于声现象，下列说法不正确的是（）A．市区内某些路段“禁鸣喇叭”，这是在声源处减弱噪声B ．人们利用超声波的反射制成声呐可以探测海水深度C ．“公共场所不要大声说话”是要求人们说话的声音音调要低一些D ．“响鼓也要重锤敲”，说明声音是由物体振动产生的，且振幅越大响度越大9．下面的几种现象中，属于凝华的是 （ ） A ．春天，冰河解冻 B ．夏天的清晨，露珠附着在草叶上 C ．秋天的早上，白雾弥漫在空气中 D ．冬天的早晨，霜附着在枯草叶上 10．戴眼镜的同学从寒冷的室外进入温暖的室内时，眼镜片上会形成“小水珠”。
哈尔滨市香坊区2015届初中毕业调研(二模)英语试题及答案
哈尔滨市香坊区2015届初中毕业学年调研（二模）英语试题一、单项选择( )1. My dear friends, during the time when we are preparing for the future, we may fall from time to time. However, we can learn from failure, correct our mistakes and try again until we achieve our goals. A, a B, an C, /( )2. The students in our class are the best in our school. We always work hard. We have already make a rule to get to school an hour earlier than before in order to achieve the final success.A, it B, them C, that( )3. - Bob is getting more and more interested in reading books. - So he is. He spends much more time than he used to all kinds of books.A, read B, reading C, is reading( )4. -No matter what difficulty we have to face, we never think of . - That’s what our teacher alwyas tell us as well.A, to give up B, give up C, giving up( )5. Wechat, a new kind of communication ways, has become one of ones among young people because of its great advantages.A, popular B, more popular C, the most popular( )6. - Look at the girl crying in hte corner. Is she your younger sister? - It be her. She was taken to my grandparents’ home last week.A, mustn’t B, can’t C, may not( )7. - Would you please give me some on how to learn English at home? - Well, do a lot of reading and listen to English as often as possible.A. experiences B, advices C, suggestions( )8. - What were you and your mother doing at 7:00 p.m. yesterday? - I was watching TV my mother was doing housework.A, when B, as soon as C, while( )9. - What do you think of lying to others if we can’t make a good plan? - I think that everyone us if we lie to them.A, be in trouble B, will be against C, agrees on( )10. - Could you tell me something about the park you visited yesterday? - Sure. It is such a beautiful park that many children like playing in it.A, where B, that C, when( )11. - Mom, may I surf the Internet now? - No, you have finished doing all your homework.A, unless B, if C, because( )12. - Waste paper shouldn’t everywhere. It is our duty to keep our city clean. - Yes. It’s high time that we should take action.A, thrown B, be thrown C, is thrown( )13. Practice makes perfect. You will improve the ability of reading you keep reading every day. So don’t be lazy learners.A, as soon as B, as long as C, as well as( )14. - Could you tell me the weather will be like tomorrow? - According to the weather forecast,htere is going to tomorrow.A, what, be rain B, how, have rain C, what , rain( )15. In western countries, respecting women is a tradition. Gentlemen always follow the rule, “Lady first”. But if they need to show care and protection for the woman, they will come first. Which situation seldom fits western customs?A. on the bust a: Mrs. Smith, now we’ve arrived. Please get off the bus first.b: Thank you, Mr. White.B. in the restaurant a: Mrs. Smith, take a seat, please.b: Thank you, Mr. WhiteC. At the dinner a: Waiter, we are ready to order, Mrs. Smith, what would you like to eat?b: I’d like pizza and orange juice.16.Recently, the students in Grade Nine are feeling more and more pressure. Too much pressure is bad for both our health and our study. What should we do if we want to relax ourselves and get good marks in the coming exams? ①Read e-books on the mobile phone for a long time. ②Do some sports and breathe fresh air.③ Have a walk and talk with friends in the free time. ④Stay up late to do as many exercises as possible.⑤ Listen to the light music after studying.A. ②③⑤B. ①③⑤C. ②④⑤( )17. It is getting more and more convenient to do shopping online. Today is May Day. You can save if you want to buy a pair of jeans and shoes.淘宝网Taobao. com Items Price Sale Shoes ￥240 ￥192 Dress ￥300 ￥210 T-shirt ￥90 ￥54 Jeans ￥140 ￥112A. ￥126B. ￥304C. ￥76( )18. Which pair of the words with the underlined letters has the same sound?A, better fever B, fridge city C, push Russia( )19. In the folowing words, which underlined letter has a different sound from the others?A, lap B, sad C, race( )20. Which word of the following doesn’t have the same stress as the others?A, pancake B, success C, traffic二、完形填空Some people think only school children do not agree with parents, however, it is not true. 21 is a problem for parents and children of all ages. If it’s hard for you to communicate with your parents, don’t worry about it. Here is some advice 22 you to bridge the generation gap(代沟).Don’t aruge with your parents. Don’t get to your parents when you are angry. Your parents probably won’t 23 your idea if you are shouting at them. And you can’t express yourself well if you are angry. Go someplace to 24 . Make sure you understand why you are unhappy. Then think about 25 you want to say to your parents. If you don’t think you can speak to them at the moment, try writing a letter.Try to reach a compromise(和解). Perhaps you and your parents 26 on something. You can keep your disagreement and try your best to accept each other. Michael’s mother didn’t agree with him about buying a motorcycle. They argue(争论)over it. But they finally came to a compromise. Michael bought the motorcycle, bur only drove it on 27 days.Of course, your parents might refuse to compromise on something. In these situations, it is especially important to show love and respect to them. 28 respect will keep your relationship strong.Talk about your values. The values of your parents are probably different from 29 . Tell your parents what you care about, and why. Understanding your values might help them see your purpose in life.A good relationship with your parents can make you a 30 and happier person. It is worth having a try!( )21. munication B. Communicate C. Communications( )22. A, for B, from C, to ( )23. A, think B, consider C, see( )24. A, warm up B, cool off C, get excited( )25. A, who B, which C, what ( )26. A, disagree B, dislike C, disturb( )27. A, many C, certain C, snowy ( )28. A. Shown B. Showing C. Show( )29. A, yours B, you C, your ( )30. A, better B, good C, best阅读理解Xiaoqiang, my little brother, is my uncle’s son. He is only two months younger than me. Whenever I think of him, two interesting things will come into my mind.When I was six years old, he, with his parents moved from the south of China to my hometown-a very small town in the north. The door of my house was made of iron(铁). You know, the northern part of China was so cold in winter that doors were all clothed with frost(霜). Xiaoqiang once came to my house and said that was sugar. I corrected him saying that was frost. But he insist ed. I gave up and said, “Sugar is sweet. Go and taste.” He really did that. But his tongue was stuck(粘)to the door. It was my mom helped him out with warm water. For this I was beaten by my dad.The other interesting thing happened when we were in Grade 7. After they moved to my hometown, we almost did everything together, began our primary school, entered the same middle school and we have been classmates for nearly nine years. For some time, we hated going to school and tried to make all excuses just to skip(悄悄溜走). My classroom was on the second floor, not very high. One day, we tried to jump out through the windows when the teacher turned to the blackboard to write. I did it with 2 other close friends, of course including him. I made it first. I did it. So was the next one. When he started to move, the teacher was making sound. He was so afraid, he didn’t jump right. He was hung by the window on his clothes. About half an hour, he shouted in a poor voice, “” You can imagine what a “wonderful”scene it was!( )31. The underlined word “insist” most probably meansA. say “yes” B, refuse to change C, become angry( )32. Because Xiaoqiang thought the white frost on the door was sugar,A. I tried to correct him and told him the truthB. I went to the door and tasted it to show that was not sugarC, my mom and dad beat me and stuck my tongue onto the door( )33. Xiaoqiang and I almost did everything togetherA, after we went to Grade seven B, since they began our primary schoolC, after he moved to my hometown with his family( )34. Which of the following is TRUE according to the story?A. Xiaoqiang is my younger brother because he was two years younger than me.B. Xiaoqiang lived in the south, so he mistook frost for sugar.C. Xiaoqiang is my close friend, so we two jumped through the window and both did it.( )35. “” can be the missing sentence in the passage.A. What a nice place I am having!B. The higher I stand, the farther I can seeC. Sir, may I goback there?Heavy Earthquakes in the WorldCountr y China Haiti(海地)Chile(智利)JapanNepal(尼泊尔)Place wenchuan - ---Time 2008.5.122010.1.122010.2.272011.3.112015.4.26Magnit ud: 震级8.0 7.3 8.8 9.08.1Popula tion of the deaths69thousand270thousandOnly 802 peopleNearly 15thousand3000 deathstill April 27thEcono mic loss - - 30billion --Others Populaiton of theinjured:370 000Population of thehomless: 480000- 11432peoplelostThe heavestearthquake in Nepalduring 81 years( )36. According to the form above, how many earthquakes were earlier than the one happned in Japan?A. OneB. TwoC. Three( )37. The earthquake happened in is 2015 is the heaviest in this country since 81 years ago.A. ChinaB. NepalC. Chile( )38. The population of hte deaths in hte earthquake in is hte largest of all. A. Haiti B. China C. Chile( )39. 370 thousand people hurt in the earthquake is and 480 thousand people lost their home in the earthquake in . A. Chile, Nepal B. Japan, Haiti C. China, Haiti( )40. Which of the following is TRUE accroding to the form above?A. Among all these earthquakes, the one happened in Haiti was the heaviest.B. We only know how many people died in the earthquake in Nepal before April.C. Chile has the fewest deaths in the earthquake in 2012Family, it’s just a six-letter word: but to me, it is a word full of meaning. From the moment I was born, my parents showed me with love. I love spending time with my family. Hiking up Mt. Washington, going on a road trip to Las Vegas, camping in Virginia, and playing volleyball in the mud are some of the greatest and most unforgettable memories I have made with them.The definition(定义)of the word family, in hte dictionary, is a group of people related by blood. As I grew older, the definition of family continues to change. I have learned that one can have different types of families. My volleyball team and my lacrosse(长曲棍球) team are two groups of people I consider as family because during each season, they are the ones that I am always around, that can give supports(支持), that can give a helping hand when needed.I like to think that my classmates are another type of family. They help me on both school work and homework and explain concepts(概念) that seem foreign to me, like different slang words. They can even make me laugh when I am having one of those days when it seems like very lousy(恶心)thing that could happen, is happening.The people around me have taught me to always be there for family, that family comes first. From school, to sports, to home, I know that I am not alone, that there is someone there. Without my family, and my “extended(延伸的) families”, I don’t know where I wo uld be. I am truly lucky.( )41. According to the passage, family is a word full of meaning to the writer.( )42. As “I” grow older, I know that the definition of “family” is a group of people related by blood. ( )43. “I” also have different types of f amily-the volleyball team, the lacrosse team and even my classmates.( )44. “My”classmates can help “me” with “my ” school work and homework, and I can also get happiness from them evenwhen I was unhappy.( )45. From this paasage, we learn that without our family and the “extended ” family, we will still be lucky.How much paper do you use every year? Maybe you can’t answer this question quickly. In 1990 the world’s use of paper was about one kilogram for each person a year. Now most countries u se as 50 kilograms of paper for each person in a year. But such countries like America, England and Sweden, use more paper than other countries.Paper was first made in China about 2000 years ago. It was made from the hair like parts of certain plants. Paper was not made in southern Europe until about the year 1100. In 1500, a German named Schaeffer found out that people could make the best paper from trees. After that the forest countries of Canada, Sweden, America, Finland became the most important ones in paper making.When we think of paper, we think of newspaper, books and writing paper. But there are many other uses. Only half of the paper is used for books and magazines. Paper is very good for keeping your warm. Houses are often insulated with paper.You may see some people sleep on a large number of newspapers. They are insulating themselves from the cold. In Finland sometimes the temperature is 40 degrees centigrade below zero. The farmers wear paper boots in the snow. Nothing could be warmer.Each year more and more things are made of paper. We have paper cups and plates for a long time. Now we hear that chairs, tables and even beds can be made of paper. With paper boots and shoes, you can wear paper hats, paper dresses and paper raincoats. When you have used thme once, you throw them away and buy new ones.People have made paper boats, but they haven’t made paper planes or cars. Just wait- perhaps they will make planes or cars someday.( )46. The underlined word “insulate” in the passage means “” in Chinese.A. 取暖B. 制作C. 隔绝冷或热( )47. In Finland farmers wear paper boots in the snow so that they canA, become the most fashionable B, save a lot of money C, keep themselves warm( )48. Picture shows the right feather(特点)of paper( )49. Which of the following is TRUE according to the passage?A. Each person use fifty kilometers paper in a year in most countries now.B. Paper was first made from hte hair like parts of certian plants in China about 2000 years ago.C. After paper was made in southern Europe in the year 1100, the forest countries became the most importan ones in papermaking.( )50. The best title of this passage should be .A. HOW TO USE PAPERB. THE INTRODUCTION OF PAPERC. THE FUTURE OF PAPER四、交际应用AA: Hi, Mike. The exam is over finally. I want to go to the new library 51B: You bet. 52 Then turn right and it’ll be on your left. A: 53 Could you speak a little more slowly, please? B: Sure. I mean you go along this road until you see the t raffic light, then turn right. Don’t worry about it. 54 A: I hope so. 55 B: I’m going to watch a movie. Do you know a new movie named “Fast & Furios 7” is being shown in all the cinema? A: Yes, 56 It will be quite exciting to watch it, I think. B; Yes, people say it is different from the first six. Paul Walker acted the hero died in a traffic accident before the movie was finished. A: 57 But that might be his choice. He had ever said, “Life has got to be an adventure. Enjoy every minute of it.”B: I guess he did. And I heard “See You Again”, the song at the end of this movie was so touching that it made many people cry.A: After hearing what you said, I can’t wait to see it. B: 58A: Sorry, I have to go to the library first. Maybe next time. But anyway, thank you all the same.(B) A: Spring is coming. The weather is getting warmer and warmer.B: Yes, 59 nice weather it is! I really want to go to school and enjoy the time in class. But I have to stay at home for 60 two weeks because of my broken leg.A: Two more weeks? I am sorry to hear that. Is your leg better than before?B: Yes, but I have to see the doctor in 61 to change the medicine on the leg at times.A: How 62 do you go to the hospital? B: Three times a week.A: Is it very far 63 your home to the hospital?B: It’s about a 10-minute walk. But my father has to carry me on his back to go downstairs and upstairs. I feel very sorry about that.A: Wow, really hard wor k! By the way, what’s you 64 ?B: I am nearly 60 kilos heavy. I don’t know what I can do to show my appreciation to my parents. A: The love from our parents is just like a huge umbrella, 65 the wind and rain away from us. B: Yes, nothing can express my grateful feeling to them.五、任务型阅读true two have real exciteAn Internet friend is someone who you talk with online and you have probably never met. You may talk with this person in a chat room and discover that you have a lot in common. 66 Internet friend is a special experience and gives us a chance to learn about other people.Though Internet friends can be a lot of fun, it is important to remember that we need to be careful. Since we have probably never met the people we are talking with, we have no ways of knowing if they are telling the 67 . It is important not to give too much personal information because it may be dangerous. A.Go along this road as far as the traffic light. B. I ’m sure you ’ll get there without any difficulties. C. Could you tell me how to get there? D. It ’s half an huor later. E. By the way, what are you going to do now? F. I have heard of it.G. That was such an awful end for Paul. H. Why not to with me?I. What ’s today ’s movie?J. At the traffic light, turn left?Always think 68 before giving an Internet friend your telephone number or home address.Having Internet friends can be very 69 , but it is important to remember not to believe in every one of them. There may be many people that you talk with online, but they don’t 70 know about you. Internet friends can never take the place of your true friends.(B) A chick asked the hen, “Mommy, today is Sunday. Could you take me out to play but not to lay eggs?” Then the hen replied, “I can’t, honey. I have to work.” “But you’ve already laid many eggs.” The chick said. The hen said to him, “One egg a day, the knife is away. If no egg today, we’ll be served tonight. Baby, you should remember: live for you vaulable contribution; you die for your loss of contribution. The valuable contribution you made would never promise you a good future. So we should work hard every day. Stop the fight and stop to live. If you stop fighting, you will have no life.”71.r ; to answer 72. f ; tomorrow, the time yet to comeCould you take me out to play not to lay eggs? Could you take me out to play laying eggs?75. What will you have if you stop fighting?(C) Yesterday, someone asked me what was the greatest skill for a successful salesperson to have. I answered, “The ability to listen.” He agreed with me. But the ability to listen is not only impor tant in selling,it is also important when you are shopping or talking with your friends. In fact, communication may be impossible if we don’t listen.Many scientists explain the way to communicate better is by listening better. By not thinking, just listening carefully to other people, we may know a new way of knowing these people who they really are. Good listening can always show respect and improve people’s relationship.Many people think that parents should listen more to their children so that they can understand thme beterTeachers should listen more to their students so that they can meet their needs better. Then teachers can place themselves in better relationship with their students.Students should listen more to their classmates, as they will help and learn from each other. Then they can build their friendship.By listening to our heart we can make an understanding of who we really are. We can also have more love to people, animals and nature around us. People who know listening are more successful in study, work and life.六、书面表达假如你是张明，请根据以下表示，写一篇发言稿，并在发言稿中针对如何合理安排这最后一个月的学习时间给同学们提两点建议。
2015年哈尔滨市香坊区中考一模物理试题及答案
2015年香坊区初中毕业学年调研测试(一)物理试题16．物理就在我们身边，下面对日常生活中相关数据估计合理的是（） A．教室学生课桌的高度约为15dm B. 一个普通矿泉水瓶可盛约500g的水C. 只有36V的电压对人体才是安全的D. 人行走时对地面的压强约1500Pa17．如图所示描述了常见的物态变化现象，其中属于液化现象的是（）A．屋檐上冰凌正在消融 B．铁丝网上出现霜 C．食品盒中的干冰变小 D．草叶上出现露珠18．下列说法中不正确的是（）A. 人配带凹透镜可以矫正近视眼 B. 声波和电磁波都能传播信息和能量C. 电磁波在真空中的传播速度为３×105km/sD. 红外线不属于电磁波19．如图所示的四种现象中，由于光的反射形成的是（）A．墙上的影子 B．海上出现的海市蜃楼 C．水的倒影 D．铅笔好像折断了20．关于能源，下列说确的是（）A. 水能、汽油、柴油等属于一次能源B. 核能、地热能、太阳能等属于新能源C. 石油、煤炭、潮汐能等属于可再生能源D. 石油、煤炭、电能等属于二次能源21．炎热的夏天，小雷家新安装了空调。
当空调运转时，只要将完好的电水壶插头插入插座，空气开关就跳闸，分析原因可能是（）A．电水壶的插头没插入前，插座就短路了 B．电路中用电器的总功率过大C．电路中总电流小于空气开关的额定电流 D．电线过细而电阻大造成电路电流过大22．如图所示的四幅图中，发现“磁能生电”的实验装置是（）A B C D23．下列说法错误的是（）A．物体由于运动而具有的能叫做动能B．跳伞运动员在空中匀速下落时，其重力势能减小，动能不变C．地面上的木箱，必须持续用力推才能不停地向前运动，说明力是维持物体运动的原因D．抛向空中的物体总会落到地面，这是由于物体受到重力的作用24．酒精测试仪可以检测驾驶员是否酒后驾车。
如图所示是它的原理图，R2为酒精气体传感器，它的阻值随酒精气体浓度的增大而增大。
检测时，如果驾驶员呼出的酒精气体浓度越大，那么下列说确的是（）A．电压表示数越大B．电压表示数不变C．电压表示数越小D．电流表示数越大25．下列说法中正确的是（）A．做匀速圆周运动的物体，它一定受到平衡力的作用B．学生双手拉住单杠悬在空中静止，他对单杠的拉力和他所受的重力是一对平衡力C．做匀速直线运动的物体，其机械能一定保持不变D．做匀速直线运动的物体，如果只受到三个力作用，这三个力的合力一定为零26．如图所示，电源电压为4.5V且恒定不变，当开关S闭合后，滑动变阻器的滑片P从a端滑向b端的过程中，三只理想电压表示数变化的绝对值分别为ΔU1、ΔU2、ΔU3，下列可能出现的情况是（）A．ΔU1=0V ΔU2=2.5V ΔU3=1VB．ΔU1=0V ΔU2=2V ΔU3=2VC．ΔU1=1.5V ΔU2=1.5V ΔU3=1.5VD．ΔU1=0V ΔU2=3V ΔU3=1.5V27．如图所示，电源电压为6V且保持不变，电流表的量程为0～0.6A，电压表的量程为0～3V，定值电阻R1的规格为“10Ω 0.5A”，滑动变阻器的规格为“20Ω 1A”。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
2015年香坊区初中毕业学年调研测试(三)
九年理化综合试题参考答案及评分标准
（化学部分）
说明：化学方程式中条件、配平答错或没答扣1分；化学式、化学名词错误不得分；沉淀符号、气体符号、错别字、字母书写不准确、漏字等错3个扣1分。
简答问题其它答法合理的酌情给分。
一、选择题（每小题2分，合计30分）
题号 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 选项
B
D
B
C
B
D
B
D
D
B
C
D
C
A
A
二、非选择题（除特殊标明的分值外，其余每空各1分，合计40分） 28（6分）
（1）①疾病（0.5分） ②身体健康（0.5分） （2）①CO(NH 2)2 ②叶、茎（0.5分）
③蛋白质（0.5分） ④2NH 4NO 3+Ca(OH)2===Ca(NO 3)2+2H 2O+2NH 3 ↑（2分） ⑤ -3价、+5价 29.（6分）
（1）化学能转化为内能转化为机械能转化为电能（转化写成→也可以）
（2）①煤充分燃烧，主要生成二氧化碳，减少一氧化碳、炭黑颗粒的产生，减少空气污染，充分燃烧放热多，节约能源。
②二氧化硫（0.5分）、二氧化氮（0.5分）（写化学式也可以） （3）A
(4) ①减小 ②C 4H 10
30．（3分）
（1）2SO 2+O 2=======2SO 3
（2）二氧化硫分子，参加反应的氧分子
（3）在化学变化中，分子分解成原子，原子重新构成新分子 31.（7分） （1）①长颈漏斗 ②MnO 2 ③2KClO 3====2KCl+3O 2↑
（2）①装置的气密性（0.5分） ②连续并比较均匀（0.5分）
③导管移除水面（0.5分） ④熄灭酒精灯（0.5分） （3）画图2分，错1处扣1分，扣完为止。
（图略，见教材45页） 32（2分）
催化剂
高温
MnO 2
（1）隔离可燃物（2）①⑥
（1）使可燃物与空气隔绝（2）②④
（1）使可燃物的温度降到着火点以下（降低温度）（2）③⑤
33．(4分)
（1）（2分）
CuSO4+Ba(OH)2==Cu(OH)2↓+BaSO4↓（1分）
CuSO4+Mg===MgSO4+Cu（1分）
（2）红棕色固体逐渐减少（消失），溶液由无色
变为黄色
（3）如图（四个化学式都写正确得1分）
34（6分）
（1）溶液由红色变为无色（0.5分）
（2）氯化钠、氯化氢（NaCl HCl）（0.5分）
（3）氢氧化钠、碳酸钠（NaOH Na2CO3）（0.5分）
（4）（2分）碳酸钠与盐酸反应产生二氧化碳气体（Na2CO3+2HCl==2NaCl+H2O+CO2↑），根据现象可知实验一废液中的溶质是NaCl HCl，实验二废液中的溶质是NaOH Na2CO3，氢氧化钙和碳酸钠在溶液中不能共存（1分），碳酸钙不溶于水（0.5分），所
以废液中一定没有氢氧化钙，也不能有碳酸钙，也就不可能和盐酸生成氯化钙，溶质
不可能有氯化钙（0.5分）
（5）紫色石蕊溶液（合理即可）（0.5分）
（6）紫色溶液变成红色（合理即可）
（7）各溶质之间能否共存（是否反应），溶液的酸碱性
35.（6分）
（1）NaCl+AgNO3===AgCl↓+NaNO3
（2）58.5/143.5=X/5.74g
（3）23.4%（0.5分）不相符（0.5分）
（4）6.8%
（5）（2分）氯化钠质量逐渐减少到零，硝酸钠质量从零逐渐增大到不变，谷氨酸钠质量始终不变（三种溶质都写对得2分，写出两种得1分，只写出一种不得分）
香坊区2015九年物理调研测试三
参考答案及评分标准
一、单项选择题: （每小题2分，共24分）
题号16 17 18 19 20 21 22 23 24 25 26 27 选项 B B A B C B D D D C A D
三、非选择题: (共计46分，未注明分值的题目每空1分)
36、(2分) 漫反射；信息。
37、(2分) 振动；音调。
38、(2分) －6；读数时视线没与液柱上表面相平。
39、(2分) 乙；温度。
40、(2分)比热容；水汽化后又液化且放热（或水蒸汽液化放热）。
41、（２分）大于；2.5。
42、（1分）5∶12
43、（2分）BD；AC。
44、（1分）弹性势能转化为动能。
45、(2分) 右；0.6。
46、(2分) 如图。
有一处错误扣1分。
47、（2分）如图，有一处错误扣1分。
48、(5分)（1）石块部分浸入水中： F1浮＝G－F1＝10N－8N＝2N （1分）
石块全部浸入水中： F2浮＝G－F2＝10N－6N＝4N （1分）
因：V1排＜V2排而F1浮＜F2浮(1分) 结论：在液体密度相同时，物体排开液体的体积越大，物体所受浮力越大；（1分）
（2）（1分）1000。
49、(6分) （1）（2分）
①可使被加热物体受热均匀；
②可减缓熔化速度, 便于收集证据。
(或便于收集数据和熔化现象；或便
于记录温度和时间及熔化现象)。
（2）固体熔化时吸热。
（1分）
（3）正确规范描点绘出图像得1分。
（4）晶体熔化时吸热，温度保持不变。
（没有晶体字样不扣分）（1分）
（5）再选取几种非晶体物质继续探究。
（1分）
50、（7分）（1）22；（1分）
没有进行多次测量求平均值减小误差；（0.5分）
在电路中串入滑动变阻器实现多次测量。
（0.5分）
（2）电路连接正确1分。
(注: 电路连接错误步骤及表格也可能得分)
②断开S3，闭合S2，保持滑片P不动，直接读出电压表示数U2。
（1分）
③重复①②两步的操作，改变滑片的位置，再收集几组U1和U2的数据。
（1分）
表格设计：（2分：Rx表达式1分；收集U1、U2及体现多次测量求Rx的平均值1分）次U1/V U2/V Rx＝U2R0/(U1－U2) /ΩRx的平均值/Ω
1
2
3
…
51、（6分）（1）由V＝S/t得t＝S/V＝7000m/1500m/s＝4.7s (2分)
（2）P＝F/S及P＝ρgh得（1分）
F＝PS＝ρghS＝1.03×103×10×7000×300×10－4N＝2.163×106N (1分) （3）F浮＝ρgV排＝1.03×103×10×50N＝5.15×105N （1分）
G海水＝F浮－G自＝5.15×105N－2.2×105N＝2.95×105N （1分）
即：至少要向自身储水箱内注入2.95×105N的海水才能实现下潜。
（或G海水＋G自≥F浮G海水＋G自≥F浮－G自＝5.15×105N－2.2×105N＝2.95×105N）注：以上答案仅供参考，学生若有其它答法，如果合理均可酌情给分！!。