高三物理上学期第4周周练题
四川省宜宾市一中高2014级2016-2017学年上学期
第四周物理试题
第Ⅰ卷
一、单项选择题（本题共14个小题，每小题3分。在每小题只有一项是符合题目要求的） 1.下列说法中正确的是( )
A.亚里士多德认为重物与轻物下落得同样快
B.伽利略提出力是维持物体运动的原因
C.牛顿总结万有引力定律 并测出了引力常量G
D.开普勒总结出开普勒三大定律(行星运行三定律）
2．已知地球质量为M ，半径为R ，自转周期为T ，地球同步卫星质量为m ，引力常量为G .有关同步卫星，下列表述正确的是( ) A ．卫星距地面的高度为 3GMT 2
4π2
B ．卫星的运行速度小于第一宇宙速度
C ．卫星运行时受到的向心力大小为G Mm
R
2
D ．卫星运行的向心加速度等于地球表面的重力加速度
3.马航客机失联后，西安卫星测控中心启动应急机制，对在轨运行卫星测控计划进行调整，紧急调动海洋、风云、高分、遥感4个型号近10颗卫星，为地面搜救行动提供技术支持，个别卫星还变轨，全力投入搜救。如图所示，假设卫星在A 点从圆形轨道Ⅰ进入椭圆轨道Ⅱ，
B 为轨道Ⅱ上的一点，下列说法中错误的是( )
A. 在轨道Ⅱ上经过A 的速度小于在轨道Ⅰ上经过A 的速度
B. 在轨道Ⅱ上经过A 的速度小于经过B 的速度
C. 在轨道Ⅱ上运行的周期小于在轨道Ⅰ上运行的周期
D. 在轨道Ⅱ上经过A 的加速度小于在轨道Ⅰ上经过A 的加速度
4．a 、b 、c 、d 是在地球大气层外的圆形轨道上运行的四颗人造卫星．其中a 、c 的轨道相交于P ，b 、d 在同一个圆轨道上，b 、c 轨道在同一平面上．某时刻四颗卫星的运行方向及位置如图1所示．下列说法中正确的是( )
图1
A ．a 、c 的加速度大小相等，且大于b 的加速度
B ．b 、c 的角速度大小相等，且小于a 的角速度
C ．a 、c 的线速度大小相等，且小于d 的线速度
D ．a 、c 存在在P 点相撞的危险
5.“北斗”卫星导航定位系统由地球静止轨道卫星(同步卫星)、中轨道卫星和倾斜同步卫星组成．地球静止轨道卫星和中轨道卫星都在圆轨道上运行，它们距地面的高度分别约为地球半径的6倍和3.4倍．下列说法正确的是( ) A ．静止轨道卫星的周期约为中轨道卫星的2倍 B ．静止轨道卫星的线速度大小约为中轨道卫星的2倍 C ．静止轨道卫星的角速度大小约为中轨道卫星的
1
7
D ．静止轨道卫星的向心加速度大小约为中轨道卫星的
17
6.由于稀薄空气的阻力作用,低轨道卫星的运行轨道半径会逐渐减小,卫星只受地球引力和稀薄空气阻力作用,在此过程中下列判断中正确的是( ) A.卫星的动能逐渐减小 B.系统引力势能一定减小 C.系统机械能保持不变
D.卫星克服阻力做的功等于引力势能的减小
7.已知某星球的自转周期为T 0，在该星球赤道上以初速度v 竖直上抛一物体，经t 时间后物体落回星球表面，已知物体在赤道上随星球自转的向心加速度为a ，要使赤道上的物体“飘”起来，则该星球的转动周期为（ ） A.02at
T T v
=
B.0at
T T v = C.T ＝ at at ＋2v
T 0 D.0at
T T at v
=
+
8. (多选)P 1、P 2为相距遥远的两颗行星，距各自表面相同高度处有一颗卫星s 1、s 2做匀速圆周运动。图中纵坐标表示行星对周围空间各处物体的引力产生的加速度a ，横坐标表示物
体到行星中心的距离r 的平方，两条曲线分别表示P 1、P 2周围的a 与r 2
的反比关系，它们左端点横坐标相同，则( )
A ．P 1的平均密度比P 2的大
B ．P 1的“第一宇宙速度”比P 2的小
C ．s 1的向心加速度比s 2的大
D ．p 1的公转周期比p 2的大
9.在漫长的宇宙形成过程中，有的星球往往会在相互作用力的影响下形成稳定的多星系统。如图，a 、b 、c 、d 四颗质量均为m 的星球构成一个边长为L 的正方形而绕它们的中心转动，不考虑其他星球的影响，则下列关于该系统的说法正确的是（ ）
A.每颗星球受的合力为: 2
2
52Gm
F L
=
B.每颗星球转动的角速度为： 3
(42)2Gm
L ω+=
C.每颗星球转动的速度为： (22)2Gm
v L
+=
D.每颗星球转动的周期可以不同
10. (多选)如图所示，a 为地球赤道上的物体，b 为沿地球表面附近做匀速圆周运动的人造卫星，c 为地球同步卫星。关于a 、b 、c 做匀速圆周运动的说法中正确的是( )
A. 地球对b 、c 两星的万有引力提供了向心力，因此只有a 受重力，b 、c 两星不受重力
B. 周期关系为T a ＝T c >T b
C. 线速度的大小关系为v a D. 向心加速度的大小关系为a a >a b >a c 11. (多选)火星直径约为地球的一半，质量约为地球的十分之一，它绕太阳公转的轨道半径约为地球公转半径的1.5倍。则下列说法正确的是( ) A ．火星表面重力加速度约为地球表面的重力加速度的110 B ．火星公转的周期比地球的大 C ．火星的第一宇宙速度约为地球宇宙第一速度的1 5 D ．火星公转的向心加速度比地球的大 12.(多选)已知月球半径为R ，飞船在距月球表面高度为R 的圆轨道上飞行，周期为T 。万有引力常量为G ，则根据以上条件：( ) A ．可以求出飞船的势能 B ．可以求出飞船的动能 C ．可以求出月球质量 D.可以求出月球的第一宇宙速度 13(多选)某行星和地球绕太阳公转的轨道均可视为圆。每过N 年，行星会运行到日地连线的延长线上(相距最近)，如图所示。设该行星与地球的公转周期之比为k 1，公转半径之比为 k 2，则( ) A ．k 1＝ N ＋1 N B ．k 1＝ N N －1 C ．k 2＝? ????N ＋1N 23 D ．k 2＝? ????N N －123 14.宇航员驾驶太空飞船降落在某未知星球表面上，探测到该星球也和地球一样在自转且自转角速度为ω,该星球半径为R 。宇航员又把一小螺帽以v 0的速度竖直向上抛出，测出期其上升的最大高度为H ,如果要发射一颗该星球的同步卫星，则同步卫星的高度为： 2032V R R H ω2 3 22V R H ω 2 032 2V R R H ω -0322V R H ω 第II 卷 二、计算题 15．双星系统由两颗恒星组成，两恒星在相互引力的作用下，分别围绕其连线上的某一点做 周期相同的匀速圆周运动．研究发现，双星系统演化过程中，两星的总质量、距离和周期均可能发生变化．若某双星系统中两星做圆周运动的周期为T，经过一段时间演化后，两星总质量变为原来的k倍，两星之间的距离变为原来的n倍，则此时圆周运动的周期为多少？ 16.由三颗星体构成的系统，忽略其他星体对它们的作用，存在着一种运动形式：三颗星体在相互之间的万有引力作用下始终连成一条直线，中央星体保持静止，另外两颗星体等距离的绕着它做匀速圆周运动。如图，若A星体质量为2m，B、C两星体的质量均为m，BA、BC 间的距离均为r，求： (1)B星体所受合力大小F B (2)星体做圆周运动的周期T。 17.据每日邮报2014年4月18日报道，美国国家航空航天局(NASA)目前宣布首次在太阳系外发现“类地”行星Kepler－186f。假如宇航员乘坐宇宙飞船到达该行星，进行科学观测：该行星自转周期为T；宇航员在该行星“北极”距该行星地面附近h处自由释放一个小球(引力视为恒力)，落地时间为t。已知该行星半径为R，引力常量为G，则： ( B ) (1)宇宙飞船绕该星球做圆周运动的最小周期为多少？ (2）该行星的质量为多少？ (3）如果该行星存在一颗同步卫星，其距行星表面高度为多少？ 参考答案： 1D 2B 3D 4A 5A 6B 7C 8AC 9B 10BC 11BC 12CD 13BD 14C 15.答案： 解析：设双星质量分别为m 1和m 2，轨道半径分别为r 1和r 2,二者距离为L,则有： r 1+r 2=L 2 1211224Gm m m r L T π= 2 1222224Gm m m r L T π= 得： 2T = 同理：'2T π= 所以 'T = 16.答案 (1)T = 2 2 94B Gm F r = (2) T =解析: (1)由万有引力定律，B 星体所受A 、C 星体引力作用，则： 22 22 2(2) B G m Gm F r r =+ 即 2 2 94B Gm F r = （2）对B(或C): 22 2 2944B Gm F m r r T π== 得：T = 17.解析： (1)由h ＝12 gt 2 ， 解得行星表面的重力加速度：g ＝2h t 2， 又 2 20 4mg m R T π= 得：0T π =0T π= （2）由 2GMm mg R = 2 GMm mg R = 得：222hR M Gt = 2 2 2hR M Gt = （3）由 2 ()GMm R H +＝m ? ????2πT 2(R ＋H ) 得：H ＝ 3hT 2R 2 2π2t 2－R 高三历史第二学期第四周自主作业 一、单项选择题(本大题20小题。每小题3分，共60分) 1．秦朝律文明确规定：“盗徙封，赎耐。”（“封”，就是田间的阡陌、顷畔的地界。“耐”，古时的一种刑罚，即判处剃去鬚鬓xū bìn）。这突出表明： A．秦朝时可以通过出钱来抵耐罪 B．秦朝用严刑苛法治理国家 C．秦朝统治者严厉打击盗窃行为D．秦统治者维护地主阶级土地所有权 2．下图是甲骨文中三个字，依次是“丝”、“桑”和“蚕”。能正确反映的历史信息是： ①中国的丝织业不晚于商朝②商朝的农业比较发达③本材料可用来直接证明商朝已有种桑养蚕的历史④商朝时人们的主要衣料是丝织品 A．①② B．③④ C．②④ D．①③ 3．故宫养心殿有一对漆红圆柱，上面镌刻着雍正帝手书的一幅楹联“惟以一人治天下，岂为天下奉一人”。结合当时的历史背景对这幅楹联理解正确的是①体现了统治者励精图治的思想②反映了统治者对集权的极端渴望③一定程度上体现了传统的民本思想④完全是统治者自欺欺人的真实写照 A．①②③④ B．①②③ C．①③ D．②④ 4．孟子主张民贵君轻，董仲舒主张君权神授，明末清初的进步思想家黄宗羲提出君主专制是天下之大害。对以上三种观念的理解，其共性是 A．都与当时社会状况密切相关 B．都否定了君主专制制度 C．都遭到当时统治集团轻视 D．都反映社会转型时期的剧变 5．据记载，“是时武昌、南京属管之地，粤人出示安民，开科取士，禁头变服，按例征粮，农工商贾各安其业，俨然有王者风。”（《镜山野史》）对此理解不正确的是 A．太平天国政权采用传统的科举制度选拔官吏 B．《天朝田亩制度》的土地政策已无法实行下去 C．辛亥革命时临时政府要求人们断发易服D．这些措施有利于社会稳定，巩固政权6．安徽省凤阳县小岗生产队社员在20世纪70年代末签订的一份契约：“我们分田到户，每户户主签字盖章。……如不成，我们全部坐牢杀头也甘心。”这份契约签订反映了①人民公社体制严重挫伤了广大农民的生产积极性②家庭联产承包责任制势在必行③我国土地所有制正经历着变革④农民分田到户违背了当时政府的土地政策 A．①②③④ B．①②④ C．②③④ D．①②③ 7．陈旭麓在《中国近代社会的新陈代谢》写道：“洋务运动，就其主观动机而言，他们未必有真心打破旧轨，但他们的主张却包含着逸出旧轨的趋向。”这里作者所持的观点是：A．革命史观 B．全球史观 C．现代化史观 D．社会史观 四川省成都市第七中学2014-2015学年高一英语4月第3周周练试题 （扫描版，无答案） Module 3 The Violence of Nature What Is a Tornado? A tornado is a 1)___________(rotate) column of air from a thunderstorm to the ground. The most 2) _______________ (violence) have winds of more than 400 kilometres 3) _______ hour. Almost all of them occur in the US, in the area from Texas in the southeast to South Dakota in the north. Tornadoes can pick 4) ___________ cars, trains and even houses and put them down in the next street – or even in the next town. They can take the fur 5) __________ the back of a cat and the feathers 6) ___________ a chicken. They can destroy houses, but leave the furniture inside exactly where it was. 7) __________ average, there are 800 tornadoes in the US each year, 8) ___________(cause) about 80 9)__________(die) and 1,500 10) ____________(injured). The worst tornado of all time 11) _____________(occur) in 1925, 12)______________(affect) three US states: Missouri, Illinois and Indiana. By the time it ended, more than 700 people 13) _____________________(kill) and 2,700 had been injured. What Is a Hurricane? Hurricanes are strong tropical storms, and they usually occur in the southern Atlantic Ocean, the Caribbean Sea and the Gulf of Mexico. There are violent winds of 120 kilometres per hour or more, 14) ____________ cause huge waves, heavy rain and floods. There are on average six Atlantic hurricanes each year and they usually affect the east coast of US from Texas to Maine. The worst hurricane disaster of all time occurred 15) ________ the 8th September 1900 in Galveston, Texas. Winds of 200 kilometres per hour and five-metre high waves hit the city. The disaster killed 6,000 people in a population of 37,000 and destroyed 3,600 buildings. An Extraordinary Event This is a story about the 1900 Galveston hurricane. Charles Coghlan was 16)________ nineteenth-century Irish actor 17) ________ went to live in Canada. He then moved to New York, 18) _________________ he became famous. 19)______ the 1890s, he had moved to Galveston, where he died in 1899, a year before the hurricane 20) ________ (strike). The cemetery 19) _____________ Coghlan was buried was destroyed by the hurricane and Cohglan’s coffin ended up in the sea. - 1 - 2021年高三上学期物理周练试题2含答案 一、单项选择题：本题共5小题，每小题3分，共计15分。每小题只有一个选项符合题意。 1．关于物体运动的速度和加速度的关系，下列说法正确的是 A．速度越大，加速度也越大 B．速度变化越快，加速度一定越大 C．加速度增大，速度一定增大 D．加速度的方向保持不变，速度方向也一定保持不变 2．在“验证牛顿第二定律”的实验中，以下做法正确的是 A．每次改变小车的质量时，不需要重新平衡摩擦力 B．实验时，先放开小车，再接通打点计时器的电源 C．平衡摩擦力时，应将小盘用细绳通过定滑轮系在小车上 D．求小车运动的加速度时，可用天平测出小盘和砝码的质量(M′和m′)以 及小车质量M，直接用公式a＝M′＋m′ M g求出 3．如图所示，质量为m的小球被水平绳AO和与竖直方向成θ角的轻弹簧系着处于静止状态，现用火将绳AO烧断，在绳AO烧断的瞬间，下列说法正确的是 A．小球的加速度为零 B．小球的加速度a=gsinθ C．弹簧的拉力F=mg/cosθ D．弹簧的拉力F=mgsinθ 4．如图5所示，竖直放置在水平面上的轻弹簧上放着质量为2 kg的物体A，处于静止状态．若将一个质量为3 kg的物体B轻放在A上的一瞬间，则B对A的压力大小为(g取10 m/s2) A．30 N B．0 C．15 N D．12 N 5．如图甲所示，放在光滑水平面上的木块受到两个水平力F1与F2的作用，静止不动，现保持力F1不变，使力F2逐渐减小到零，再逐渐恢复到原来的大小，在这个过程中，在速度图像、加速度图像、位移图像中，能正确描述木块运动情况的是图乙中的 二、多项选择题：(本题共5小题，每小题4分，共20分.每小题有多个选项符合题意，全部选对的得4分，选对但不全的得2分，错选或不答的得0分.) 6. A、B两个物体从同一地点在同一直线上做匀变速运动， 它们的速度图象如图所示，则： A. A、B两个物体的运动方向相反 B. t=8s时，两物体相遇 C. 相遇前，t=4s时两物体距离最大 D. 相遇前，两物体最大距离为40m 7．关于超重和失重，下列说法正确的是 A．物体处于超重时，物体可能在加速上升 B．物体处于失重状态时，物体可能在上升 C．物体处于完全失重时，地球对它的引力消失了 D．物体在完全失重的条件下，对支持它的支承面压力为零 8. 如图所示，小球被轻质细绳系住斜吊着放在静止的光滑斜面上，设 小球质量为m，斜面倾角θ=30°，悬线与竖直方向夹角α=30°，质量 为M的斜面，静止在粗糙水平面上，则下列说法正确的是 t/s v/m A B O 5 4 15 10 26 山西省晋中市和诚高中2018-2019学年高一英语上学期周练3 班级________ 考号________ 姓名________ 一、根据短文内容，从A、B、C、D四个选项中选出一个能正确填人相应空格内的最佳答案，并把答题卡上对应题目的答案标号涂黑。(20x2=40分) There once was a very wealthy and curious king. This king had a huge rock _1_ in the middle of a road. Then he hid nearby to _2_ if anyone would try to remove this big rock from the road. The first people to pass by were some of the king’s_3_ businessmen. Rather than moving it, they _4_ walked around it. A few loudly said the King should be _5_ for not maintaining (维护) the roads. More people passed by without moving it. _6_ , a peasant came along. His arms were full of vegetables. When he got near the _7_, rather than simply _8_ around it as the others had, the peasant _9_ his load and tried to move the stone to the _10_ of the road. It took a lot of effort but he finally _11_. The peasant picked up his _12_ and was ready to go on his _13_ when he saw a _l4_ lying in the road where the rock had been. The peasant _15_ the purse. The purse was full of gold coins and a _16_ from the king. The king's note _17_ the gold was a _18_ for moving the rock from the road. The king showed the peasant what _19_ of us can understand: every obstacle (障碍) presents a chance to _20_ our condition. 1.A.placed B.hidden C. got D.buried 2.A.guess B.think C. see D.imagine 3.A.poorest B.wealthiest https://www.360docs.net/doc/5e19233123.html,ziest D.smartest 4.A.simply B.happily C.slowly D.strangely 5.A.doubted B.careful C.hated D.responsible 6.A.Quickly B.Angrily C.Luckily D.Finally 7.A.rock B.road C.king D.businessmen 8.A.walking B.jumping C.running D.climbing 9.A.cut down B.put down C.broke down D.took down 2021-2022年高二物理下学期第四周周练试题一、选择每题8分（1-3题为单选，4-6题为多选） 1、如图所示，在跨过一光滑定轮的轻绳两端分别挂着质量为m 1、m 2 的两个物体，已知 m 2＞m 1 ．若m 2 以加速度a向下加速运动时，阻力不计，则（） A．m 1、m 2 的总机械能不守恒 B．m 2 的机械能守恒 C．m 1、m 2 的总机械能守恒、动量也守恒 D．m 1、m 2 的总机械能守恒、动量不守恒 2、高空作业须系安全带.如果质量为的高空作业人员不慎跌落，从开始跌落到安全带对 人刚产生作用力前人下落的距离为（可视为自由落体运动）.此后经历时间安全带达到最大伸长，若在此过程中该作用力始终竖直向上，则该段时间安全带对人的平均作用力大小为( ) A. B. C. D. 3、在如图中，长木板M放在光滑水平面上，木块m放在木板左端，当木板与木块同时 以速率V 沿相反方向运动到木板与木块有共同速度的过程中，木板对木块的摩擦力做功的情况是（设M＞m）（） A．一直做负功B．一直做正功 C．先做正功、后做负功D．先做负功、后做正功 4、质量为m的物体静止在光滑水平面上，从t=0时刻开始受到水平力的作用，力的大小F与时间t的关系如图所示，力的方向保持不变，则( ) A、时刻的瞬时功率为 B、时刻的瞬时功率为 C、在t=0到这段时间内，水平力的平均功率为 D、在t=0到这段时间内，水平力的平均功率为 5、如图所示，一水平传送带以速度v匀速运动，将质量为m的小工件轻轻放到水平传送带上，工件在传送带上滑动一段时间后与传送带保持相对静止，在上述过程中（）A．工件对传送带做功为﹣mv2 B．传送带与工件间摩擦产生热量为mv2 C．传送带因为传送工件需要多做的功为mv2 D．传送带对工件做的功为mv2 四川省宜宾市一中2018-2019学年高中英语上学期第7周周练题第一部分阅读理解（共两节，满分40分） 第一节（共7小题；每小题2分，满分14分） 阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。 A Every one of us has been hurt by others – either by their words or actions. In those moments, you may feel so much anger that you want to hurt the other person too. But we all know that revenge(报复) doesn’t get us anywhere. So, in order to live a happy life, the best way to deal with the problem is, perhaps, as the old saying goes, to “forgive and forget”. The wisdom of this saying has even been proven in scientific studies. “It is well established that learning to forgive others can have positive benefits for one’s physical and mental Health,”Saima Noreen, a scientist at the University of St Andrews, Uk, told the Huffington Post. And now, Noreen and her research team may have found one more reason that you should stick to this principle – forgiving somebody who has hurt you makes it easier for you to forget the unhappy memory, according to their new study. In the study, researchers asked volunteers to read descriptions of 40 different situations that contained bad actions such as stealing, lying and cheating. 2021年高一（承智班）上学期周练（12.2）英语试题含答案 一、单项选择题 1．John ________ Joan at least for ten years. A. has married B. has married with C. has got married to D. has been married to 2．Standing on the top of the hill, you will get a better _______ of the whole city. A. scene B. scenery C. sight D. view 3．How could I lie to her____ she lived for the truth, whether it was found in music or people? A. unless B. when C. while D. though 4． ---Your suitcase seems very heavy. Need any help? ----__________. A. That all depends! B. No, thanks. I can manage it myself. C. It’s a pleasure. D. It couldn’t be better. Thank you all the same. 5．The food at the dinner party didn’t seem ________．It was not worth the money. A． inviting B． amazing 四川省宜宾市一中2016-2017学年高中英语下学期第4周周练题一．完形填空（共20小题；每小题1.5分，满分30分） It was a very old wooden apartment building. There was a huge 1 of fire. The Fire Department warned people who lived there to move out, 2 none would, because they were poor and had 3 to go. Singermary and her husband had 4 here for some years. One night, the building was 5 . Wooden staircases, wooden windows and wooden floors were burning. The fire became bigger and bigger, so people 6 for their lives. When half of the 7 had got themselves out, the wooden staircases fell down. The remaining people rushed to the roof of the third floor, which had not been 8 by the fire yet, waiting for the firemen to 9 them. The firemen did arrive in a short while, but the fire engines and ladders (梯子) could not reach the 10 . The situation was extremely 11 , and there was no time to lose. The fire might burn the 12 at any moment. The firemen placed many cushions (垫子) on the floor. Then they asked the people on the 13 building to jump down onto the cushions after they had shown them how. A man jumped down, uninjured. Another person jumped down, uninjured ... They jumped one after another, all 14 . Finally Singermary became the only remaining one on the roof. People shouted: “Jump, jump!” How ever, Singermary jumped head 15 with open arms. People were 16 and greatly shocked. How could she do such a 17 ? She may kill herself. 18 , the cushions were very thick, and she did not 19 , but she was injured seriously, and kept saying: “Please take me to hospital!” She was pregnant (怀孕的), and she had jumped head down in order to keep her child safe. That was mother’s 20 ! 1. A. ball B. risk C. amount D. light 2. A. as B. or C. so D. but 3. A. everywhere B. nowhere C. somewhere D. anywhere 4. A. worked B. studied C. lived D. hidden 高一英语周练(一) Ⅰ. 单项填空(共15小题；每小题1分) 1. He asked me to read an article ______ the history of France ______ an American writer. A.about; from B. on; by C. from; by D. for; with 2. Like other Disney parks, Shanghai Disneyland will______ several “lands”, each offering different experiences. A. make up B. be made up of C. consist D. be consisted of 3. He had seen the film before. That is ______ he did not see it last night. A. what B. that C. why D. because 4. It is said that he is ______ a translation of a French novel. A. occupying in B. occupying with C. occupied in D. occupied with 5. It is said that the first electronic computers ______ in 1958. https://www.360docs.net/doc/5e19233123.html,e into being B. came into sight C. come into use D. came into existenc 6. Rising sea levels and drought caused by global warming could ______ large migrations (移民). A. led to B. lie in C. result in D. result from 7. A large quantity of pigs and chickens______ on their farm, which ______ extra income. A.are raised; means B. is raised; means C. are raised; is meant D. is raised; is meant 8. Although ______ to say this, I must still cancel my dinner appointment with you this evening. A. to embarrass B. to be embarrassed C. embarrassing D. embarrassed 9. — I’m sorry. I ______ at you the other day. — Forget it. I was a bit out of control myself. A. ought not to shout B. ought not to have shouted C. mustn’t shout D. mustn’t have shouted 10. The system has been designed to give students quick and easy ______ to the digital resources of the library A. passage B. access C. way D. approach 11. If it is ______ to you, I will visit you next Tuesday. A. convenient B. fit C. easy D. comfortable 12. ______ efforts with confidence will make a full man. A. Concerning B. Occupying C. Contributing D. Combining 13. — Could you find an answer to your problem in the book I gave you? — I looked at it, but it wasn’t really ______. A. much used B. much using C. of useful D. of much use 14. Jenny nearly missed the flight ______ doing too much shopping. A. in front of B. in need of C. as a result of D. as a result 15. In many ways I agree ______ his statement. A. with B. of C. about D. on 高三物理上学期第十七次周练试题新人教版 1．下列关于力的说法，正确的是（ ） A ．力是物体对物体的相互作用 B ．力有时能脱离物体而独立存在 C ．有受力物体就一定有施力物体 D ．只有相互接触的物体间才能产生作用力 2．关于重心，下列说法正确的是（ ） A ．重心是物体内重力最大的点 B ．任何几何形状规则的物体的重心必与几何中心重合 C ．重心是重力的作用点，它总是在物体上，不可能在物体外 D ．重心是物体各部分所受重力的合力的作用点 3．如图所示，重为100N 的物体在水平向左的力F =20N 作用下， 以初速度v 0沿水平面向右滑行。已知物体与水平面的动摩擦因数 为0.2，则此时物体所受的合力为（ ） A ．0 B ．40N ，水平向左 C ．20N ，水平向右 D ．20N ，水平向左 4．张明同学双手握住竖直竹竿匀速攀上和匀速滑下的过程中，张明受到的摩擦力分别为f 1和f 2，那么（ ） A ． f 1方向竖直向下，f 2方向竖直向上，且f 1 = f 2 B ． f l 方向竖直向上，f 2方向竖直向上，且f 1 = f 2 C ． f 1为静摩擦力，f 2为滑动摩擦力 D ． f 1为静摩擦力，f 2为静摩擦力 5．关于两个大小不变的共点力与其合力的关系，下列说法正确的是（ ） A ．合力大小随两力夹角增大而增大 B ．合力的大小一定大于分力中最大者 C ．两个分力夹角小于180°时，合力大小随夹角减小而增大 D ．合力的大小不能小于分力中最小者 6．有一木块静止在水平桌面上，关于它的受力下面说法中正确的是（ ） A ．木块对桌面的压力就是木块所受的重力，施力物体是地球 B ．木块对桌面的压力是弹力，是由于桌面发生形变而产生的 C ．木块对桌面的压力在数值上等于木块受的重力 D ．木块保持静止是由于木块对桌面的压力与桌面对木块的支持力保持平衡 7．如图所示，静止在斜面上的物体，受到的作用力有（ ） A ． 重力、支持力 B ． 重力、支持力、摩擦力 C ． 重力、支持力、下滑力、摩擦力 D ． 重力、压力、下滑力、摩擦力 8. 一块砖平放在长木板的中间，木板放在水平地面上，现缓慢抬起木板的一端，而保持另一端不动。关于砖受到的摩擦力F ，叙述正确的是（ ） A ．随木板倾角的增大而减小 B ．砖滑动前，F 随木板倾角的增大而增大，砖开始滑动后，F 随木板倾角的增大而减小。 C ．砖滑动前，F 随木板倾角的增大而减小，砖开始滑动后，F 随木板倾角的增大而增大。 D ．砖滑动前后，均随木板倾角的增大而减小。 v 0 F 2014 -2015 学年度高一下学期周练卷（五） 姓名：_______________ 班级：________________ 学号：_______________ 一.短文改错。 请你修改你同学写的以下作文。文中有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。 I used to feel I was the sun in my family. But when my cousin was born, everyone pays more attention to her. So I disliked her and couldn?t get along well with her. With time went on, I realized how ridiculous I have been at that time. I tried to find a proper time to apologize. When my cousin?s family came to my home a few day ago, I took my cousin to play outside. In the way to the playground, I bought much snacks for her. Then we began chat. When we talked about their childhood, suddenly, I said “sorry” gentle. She was silent, so I thought that she hadn?t heard me clearly. But after while she said: “Don?t say that. In my memory, you are always friendly.” 二.完形填空（1-20题） Once the king of India was ill and sent for his doctor. The doctor came, ___1__ him and said, “You will be well soon in a few days if you take a bull?s milk.” The king was ___2 _ , for he had never heard of a bull that gave milk. “How is it __ _3__ ?” he asked. “Order Gulbo to get it for you,” answered the doctor. “He can do anything.” Gulbo was a person with great knowledge and was a(n) ___4___ to the doctor. So the doctor thought this would be a way of making him ___5__ . When the king told Gulbo what the doctor said and ____6____ him to get a bull?s milk, Gulbo _____7_____ understood what the doctor was trying to do. When he got home, he sat thinking how to get out of the ____8___ . His daughter, seeing him worried, asked what was the ____9____ . On hearing what the king had asked for, she said, “Don?t ____10___ , Father, I will help you.” The next day she took some old clothes, went to the bank of the river near the palace and chose a place ___11__ the king?s bedroom window. In the middle of the night, she started to do her washing. She made ___12___ much noise that the king could not sleep. The king got very angry and sent a guard to ____13___ what had happened. The soldier found the girl and led her to the king. “Why do you wash your clothes here at night?” said the king. The girl ____14___ to be afraid and said, “I had to wash clothes at night. This afternoon my father ___15___ a baby, I was busy all day because of that. Then I found there were no clean __ 16 for th e baby, so I had to come and wash them now.” “What!” cried the king. “Are you trying to make a17 of me?” I have never heard of a man having a baby.” “Well, if the king himself orders someone to get a bull?s milk for him,18 can?t a man have a baby?” The king smiled and said, “You must be Gulbo?s19 . Go and tell your father that he may keep the bull?s milk to his20 . 1. A. checked B. tested C. judged D. examined 2. A. pleased B. surprised C. touched D. moved 3. A. possible B. impossible C. usual D. unusual 4. A. friend B. enemy C. neighbor D. patient 5. A. suffer B. benefit C. trap D. arrest 6. A. begged B. ordered C. decided D. demanded 7. A. suddenly B. certainly C. correctly D. directly 8. A. chance B. situation C. position D. difficulty 9. A. matter B. wrong C. thing D. problem 10. A. frighten B. worry C. doubt D. fear 11. A. above B. on C. below D. under 12. A. such B. that C. more D. so 13. A. find out B. get out C. take out D. bring out 14. A. began B. looked C. became D. pretended 15. A. gave birth to B. had birth in C. gave birth of D. had birth to 16. A. food B. clothes C. bowls D. bottles 17. A. trick B. joke C. friend D. fool 18 A. why B. how C. who D. what 19. A. girl B. daughter C. wife D. friend 20. A. daughter B. son C. sister D. baby 三.阅读理解（21-35题） 灌云县四队中学2016-2017学年第一学期第4周七年级历史试卷 （时间：20分钟总分：50分） 一、单项选择题（共30分，每小题2分） 一、单项选择题（请选择一个您认为最恰当的选项，每小题2分，30分） 1、史前时代一般是指 A、有文字记载以前的人类历史 B、封建社会 C、有文字记载以后的人类历史 D、原始社会 2、北京人生活的年代距今大约 A、71万年-23万年 B、170万年 C、210万年 D、5000年 3、下列哪种古人类的外貌特征与现代人基本一样了 A、元谋人 B、蓝田人 C、北京人 D、山顶洞人 4、下列哪种古人类已掌握了控制和管理火的技术 A、元谋人 B、巫山人 C、蓝田人 D、北京人 5、山顶洞人生活的年代距今约有 A、70万-20万年 B、30000年 C、5000年 D、170万年 6、浙江余姚的河姆渡先民种植的粮食作物是 A、水稻 B、粟 C、玉米 D、小麦 7、人面鱼纹彩陶盆出土于下列哪个村落遗址 A、古代西亚村落遗址 B、西安半坡村遗址 C、余姚河姆渡遗址 D、山顶洞人遗址 8、浙江余姚的河姆渡遗址距今约 A、一万年 B、九千年 C、七千年 D、五六千年 9、相传建造宫殿，发明车船，制作衣裳，教人打井的是 A、黄帝 B、炎帝 C、女娲 D、大禹 10、“三过家门而不入”，历经十年，终于制服洪水的是 A、尧 B、舜 C、禹 D、汤 11.文物与文字一样承载着历史。右下文物反映了当时 A．农业初兴 B．聚族而居 C．采集狩猎 D．贫富分化 12.毛泽东曾写道：“赫赫始祖，吾华肇造；……”这里的“始祖”是指 A.禹 B.舜 C.尧 D.黄帝 13. “通大川，决壅（yōng）塞，……疏三江五湖，注之东海，以利黔首”的历史人物是A．黄帝 B．尧 C．舜 D．禹 14．较早种植水稻并居住于长江流域干栏式房屋的是 A．元谋人 B．北京人 C．半坡居民 D．河姆渡居民 15、神农是以日中为市,致于下之民,聚天下之货,交易而退,各得其所。是指 A炎帝教人农耕B黄帝建造宫室C炎帝制作陶器D炎帝开辟集市 二、读图题（读下图，完成相关题目，共20分） （1）、图A和图B分别是哪个遗址先民居住的房屋？这两处遗址分别位于哪里？（8分）（2）、请你分析，为什么同一时代的房屋结构会有如此大的差异？（8分） 图A 图B高三上学期第4周周练历史试题
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