天水市一中2010-2011学年度第一学期2008级第二阶段考试试
甘肃省天水一中2008级高二下学期第二阶段考试试题(数学)
天水市一中2009～2010学年2008级第二学期第二次阶段考试试题数学命题：伏景祥本试卷分为第Ⅰ卷和第Ⅱ卷两部分，第Ⅰ卷为选择题，第Ⅱ卷为填空题和解答题.第Ⅰ卷 选择题(共50分)一、选择题（本大题共18个小题，第1～4题，每题2分；第5～18题，每题3分；满分50分.每小题给出的四个选项中,只有一项是符合题目要求的.不选、多选或错选均得0分） 1．已知集合{|0}A x x =>，{|B x x =≥1}则A ∪B=( )A.{ x |0≤x <1}B.{ x |0<x ≤1}C.{ x |x >0}D.{ x |x ≥1} 2．函数ƒ(x )=sin3x (x ∈R )是( )A.奇函数B.偶函数C.既是奇函数又是偶函数D.非奇非偶函数 3.不等式|2x -1|<5,x ∈Z 的解集是( )A.{1,0}B.{1,2,0,-1}C.{0,1,2}D.{ -1,0,1} 4.“两直线异面”是“两直线没有公共点”的( ) A.充分而不必要条件 B.必要而不充分条件 C.充分必要条件 D.既不充分也不必要条件 5.函数12x y +=(x ∈R )的反函数是( )A.21log (0)y x x =+>B. 2log (1)y x =-(1)x >C.21log (0)y x x =-+>D. ()2log 1()y x x =+>-1 6.已知命题3:log 21P <,命题0.10.2:0.80.8Q <,那么,下面说法正确的是( )A.“P 或Q ”是真命题B. “P 且Q ”是真命题C. “非P ”是真命题D. “非Q ”是假命题 7在5(2)x y -的展开式中,含有23x y 的项的系数是( ) A.10-B. 40C. 80-D. 808.设α、β是两个不同的平面，l 是一条直线，以下命题正确的是( ) A ．若l α⊥，αβ⊥，则l β⊂ B.若l // α，α // β，则l β⊂ C ．若l α⊥，α // β，则l β⊥ D.若l// α，α β⊥，则l β⊥9.函数()log (2)(1)a x x a ƒ=+>的图像必不经过( )A ．第一象限B 第二象限C 第三象限D 第四象限 10.要得到sin 2y x =的图像，只需将sin(2)3y x π=+的图像( )A ．向左平移3π个单位 B.向右平移3π个单位 C. 向左平移6π个单位 D.向右平移6π个单位11.等差数列{}n a 的前n 项和为n S ,且36S =,34a =,则公差d 等于( ) A. 1 B.53C. 2D. 3 12.如图,已知α∩β=CD ,EA ⊥α,垂足为A ,EB ⊥β,垂足为B ,60AEB ∠=,那么三面角α-CD -β的平面角等于( )A.30B. 60C.90D.120 13.从6名同学中,选出4人参加数学竞赛,其中,甲被选中的概率是( ) A.12 B. 13 C. 35 D. 2314.从4名男生和3名女生中选出3人,分别担任数、理、化三科课代表，若3人中至少有1名女生，则不同选法共有( )A.108种B.186种C.216种D.270种15.棱长为a 的正方体1111ABCD A B C D -中，点1A 到平面11AB D 的距离为( ) A ．a16.已知函数()()y f x x R =∈是偶函数，且(4)()f x f x +=，且[0,4)x ∈时，3()l o g (1)x x ƒ=+，则(2008)(2010)f f -+的值是( )A ．2- B. 1- C. 1 D. 2 17.设13log 2a =，121log 3b =，0.31()2c =，则( ) A.a < c <b B.a <b <c C. b <c <a D. b <a <c18.广州亚运会火炬传递在A 、B 、C 、D 、E 五个城市之间进行，各城市之间的距离（单位：百公里）见右表，若以A 为起点，E 为终点，每个城市经过且只经过一次，那么火炬传递的最短路线长为( )A.20.6B.21C.22D.23βB B CA AαE B DB第Ⅱ卷 非选择题(共50分)二、填空题（本大题共5个小题，每小题4分，满分20分.把答案填在题中的横线上）19.函数2()f x =____________。
甘肃省天水一中10-11学年高一上学期第二次阶段性测试题物理
天水市一中2010级2010~2011学年度第一学期第二学段物理试题命题人：李虎笙审核人：张来胜第Ⅰ卷（共40分）一、选择题（下列每道试题的四个选项中至少有一个是正确的.全部选对者得4分，选对部分无错者得2分，有选错或不答者得0分.共40分.请把答案涂在机读卡上）1.下列单位属于国际单位制（SI制）中基本单位的是A.mB.NC.sD.m/s22.下列说法正确的是A.物体的运动方向一定跟它所受的合力的方向相同；B.如果物体的速度为零，则物体一定处于平衡状态；C.物体受到的合力为零时，它一定处于静止状态；D.物体受到不为零的合力作用时，它的运动状态一定要发生改变.3. 关于速度和加速度的关系，下列说法正确的是A. 物体的速度越大，则加速度也越大；B. 物体的速度变化越大，则加速度也越大；C. 物体的速度变化越快，则加速度也越大；D. 物体加速度的方向就是物体速度的方向.4．下列关于惯性的说法正确的是A. 物体的速度越大，则惯性也越大；B. 物体的加速度越大，则惯性也越大；C. 物体的质量和速度的乘积越大，则惯性也一定越大；D. 物体的质量越大，则惯性也越大 .5．某质点向东运动12m，又向西运动20m，又向北运动6m，则它运动的路程和位移大小分别是A．2m，10m B．38m，10m C．14m，6m D．38m，6m 6．三段不可伸长的细绳OA、OB、OC能承受的Array最大拉力相同，它们共同悬挂一重物，如图所示，其中OB是水平的，A端、B端固定。
若逐渐增加C端所挂物体的质量，则最先断的绳是A．可能是OB，也可能是OC B．OBC．OC D．OA7．自由物体恰能沿倾角为 =370的固定斜面匀速下滑，则物体与斜面之间的动摩擦因数是（sin370=0.6，cos370=0.8）A. 0.6B. 0.75C. 0.8D. 1.338．同种材料的甲、乙两木箱的质量之比为2:1，初速度大小之比为1:3，它们在同一水平地面上沿直线自由滑行，直至停下来。
甘肃省天水一中10-11学年高一上学期第二次阶段性测试题数学 缺答案
天水一中2010级2010-2011学年度第二学段试题数 学命题：闫保明 审核：张硕光一、选择题（每小题4分, 共40分）1．下列几何体中是旋转体的是 （ ）①圆柱；②六棱锥；③正方体；④球体；⑤四面体.A ． ①和⑤B ． ①C ． ③和④D ． ①和④2．如图，平面α、β、γ可将空间分成 （ ）A ． 五部分B ． 六部分C ． 七部分D ． 八部分3．如果直线220ax y ++=与直线320x y --=平行, 那么a 等于 （ ）A ． 3-B ． 6-C ． 23-D ． 32 4．下列结论中, 正确的是 （ ） ⑴ 垂直于同一条直线的两条直线平行 ⑵ 垂直于同一条直线的两个平面平行. ⑶ 垂直于同一个平面的两条直线平行. ⑷ 垂直于同一个平面的两个平面平行.A ．⑴ ⑵ ⑶B ．⑴ ⑵ ⑶ ⑷C ．⑵ ⑶D ． ⑵ ⑶ ⑷5．正方体的内切球的体积为π36, 则此正方体的表面积是 （ ）A ． 216B ．72C ． 108D ． 6486．若方程2222210x y ax ay a a +++++-=表示圆，则a 的取值范围是 （ ）A ． 2a <-或23a >B ． 223a -<< C ． 20a -<< D ． 223a -<< 7．圆22:420C x y x y +-+=关于直线1y x =+对称的圆的方程是 （ ）A ． 22(1)(2)5x y ++-=B ． 22(4)(1)5x y ++-=C ． 22(2)(3)5x y ++-=D ． 22(2)(3)5x y -++=8．如图，三棱锥D ABC -中，AC BD =，且A C B D ⊥，,E F 分别是棱AB DC ,的中点，则EF 和AC 所成的角等于 （ ）A ． 30B ． 45C ． 60D ．90 第8题图 第10题图9．经过原点的直线l 与圆()44:22=-+y x C 有公共点, 则直线l 的斜率的取值范围是（ ）A ． ⎡⎣B ．,33⎡-⎢⎣⎦C ．(),-∞⋃+∞D ．,33⎛⎫-∞-⋃+∞ ⎪ ⎪⎝⎦⎣⎭10．如图，三棱柱'''C B A ABC -的所有棱长都相等，侧棱与底面垂直，M 是侧棱'BB 的中点， 则二面角M AC B --的大小为（ ） A ． 30 B ． 45C ． 60D ． 75 二、填空题（每小题5分, 共20分）11．请写出所给三视图表示的简单组合体由哪些几何体组成 .12．经过圆22(3)(5)36x y ++-=的圆心，并且与直线220x y +-=垂直的直线方程为___________ .13．设b a ,是两条不同直线，βα,是两个不同平面，给出下列四个命题：①若,,,//a b a b b ααα⊥⊥⊄则； ②若//,,a a ααββ⊥⊥则；③若,,//a a a βαβαα⊥⊥⊂则或；④若,,,a b a b αβ⊥⊥⊥.αβ⊥则其中正确命题的序号是 。
甘肃省天水一中2008级高二下学期第二阶段考试试题(英语)
天水市一中2008级2009—2010学年第二学期第二阶段考试题英语命题：杨平说明：本试卷分第I卷（选择题），第II卷（非选择题）和答题卡三部分.共120分,考试时间90分钟.第I卷(选择题)(本卷答案请涂到机读题卡上)一.语音(共5小题,每小题1分,满分5分)从每小题的A、B、C、D四个选项中，找出所给单词划线部分的正确读音，并在答题卡上将该选项涂黑。
1. victory A. access B. ceremony C. overcome D. sacrifice2. sword A. sweet B. answer C. sandwich D. sidewalk3. break A. bread B. weapon C. great D. heavy4. dozen A. monument B. income C. towards D. lorry5. plays A. hopes B. officers C. books D. groups二．单项选择（共15小题,每小题1分,满分15分）6.—Are you satisfied with the result of the examination?—Not at all. _______.A. That’s all rightB. It’s up to youC. It couldn’t be worseD. It depends7. The young nurse was very nervous when she ______ the doctor in operating on the patient.A. insistedB. resistedC. assistedD. listed8. The games _______ the young men competed were difficult.A. in whichB. whichC. thatD. in that9. ---Professor Wang is said ______ in New York.---No wonder he knows a lot about America.A. to studyB. to have studiedC. to be studyingD. that he is studying10. More than two hundred years ago the United States _______ from the British Empire and became anindependent country.A. broke downB. broke outC. broke awayD. broke off11. The mayor ordered that the food and tents ________ sent to the people in the earthquake as soon as possible.A. wereB. beC. would beD. had been12. She is a kind-hearted woman and often has _____ mercy _____ people who are in trouble.A. a; onB.\; onC. a; oD.\; to13.______alone in a dark room, the little girl was so ______ at the _____ sound.A. Left; frightening; frighteningB. Left; frightened; frighteningC. Leaving; frightened; frighteningD. Leaving; frightening; frightened14. It had been raining three days before we arrived, so we might as well _____ at home.A. stayB. to stayC. have stayedD. to have stayed15. My sister, as well as her classmates who_____ late for class, _____criticized by Mr.Hunt．A．were; was B．was; were C．was; was D．were; were16．– Can you tell me ___________?– An engineer from Jinan Iron and Steel Plants．A．what your friend is B．who your friend isC．what is your friend D．who is your friend17. The man,_______ is often parked in front of our house, is a famous surgeon.A. who’s carB. of which the carC. the car of whichD. whose car18. After the new technique was introduced, the farmers produced ________ grain in 2006 as five years before.A. as twice muchB. as much twiceC. twice much asD. twice as muchst week, only two people came to look at the house, _______wanted to buy it.A. none of themB. both of themC. none of whomD. neither of whom20. In the dark forest _______, some large enough to hold several English towns.A. stand many lakesB. lie many lakesC. many lakes lieD. many lakes lies三．完型填空（共20小题；每小题1分，满分20分）阅读下面短文，掌握其大意，然后从各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
甘肃天水一中20082009学年度第二学期第二阶段考试
甘肃天水一中2008—2009学年度第二学期第二阶段考试英语命题：胡琴芳徐娜审核：杨志学第I卷（选择题）第一部分：英语知识运用(共三节；满分40分)第一节：语音知识（共5小题；每小题1分，满分5分）从A、B、C、D四个选项中，找出其划线部分与所给单词的划线部分读音相同的选项。
1. achievement A. machine B. stomach C. church D. technology2. ceremony A. celebrate B. metre C. resist D. regardless3. devoted A. believed B. advanced C. desiredD. expected4. tough A. daughter B. telephone C. plough D. though5. scream A. spread B. wealth C. deaf D. league第二项：单项填空（共15小题；每小题1分，满分15分）从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
6. Samuel Clemens, ______ as Mark Twain, was one of the most famous Americanwriters.A. to knowB. to be knownC. knownD. knowing7. He has a theory that it is possible to tell the time in day light ______ looking into acat’s eyes.A. withB. forC. byD. from8. Father made a promise ______ I passed the examination, he would buy me a new bicycle.A. thatB. ifC. whetherD. that if9. All their attempts to rescue the child from the burning building were ______. He died soonafterwards.A. in placeB. in returnC. in vainD. in order10. All this snow and ice makes it difficult for old people to ______ very well.A. get aroundB. turn awayC. pick upD. take off11. It’s useless ______ to persuade him to get rid of that habit; he just can’t make ______.A. trying; itB. to try; thatC. trying; thatD. in trying; it12. –Do the Olympic champions ______ regularly after the Olympic Games?--Yes, they do. They’ll get fat easily if they don’t.A. work outB. cool offC. stay upD. break away13. The man tried to break into the shop during the night, but got ______ in the chimney.A. stuckB. to be stuckC. stickingD. to stick14. One reason that we haven’t had his letter is that he ______ it to our old address bymistake.A. might sendB. may have sentC. should sendD. should have sent15. Nuclear science should be developed to ______ the people rather than harm them.A. benefitB. contributeC. supportD. affect16. When I opened the door, I found my father sitting in his chair, completely ______ a magazine.A. absorbing inB. absorbed inC. absorbing toD. absorbed to17. Some experts demanded that children ______ time for sleep and play.A. giveB. should giveC. would be givenD. be given18. In 1965, a new Voting Rights Bill became law, ______ all black people had the right to vote fromthen on.A. thatB. by whichC. by whatD. which19. We regret to inform you that there are no tickets ______ for Friday’s performance.A. availableB. spareC. convenientD. affordable20. This experiment turned out to be ______ failure, but, as we know, success often comes after______ failure.A. a; aB. /; /C. a; /D. /; a第三节：完型填空（共20小题；每小题1分，满分20分）阅读下面短文，掌握其大意，然后从21--40各题所给的四个选项中，选出最佳选项。
甘肃天水市一中高一10—11学年第一学段考数学试题
天水市一中2010级2010——2011学年必修一模块试题数学考试题命题人：张硕光 审核：王传刚一、选择题(每小题只有一个正确答案，请将你所选择答案的字母涂在机读卡相应的位置上;每小题4分，共40分）1、设全集{}4,3,2,1,0=U ,{}4,3,0=A ，{}3,1=B ，则B A C U⋃）（=（ ）A ．｛2}B ．｛1，2，3}C ．｛1，3｝D ．｛0，1，2，3，4｝2、集合{(,)|0},{(,)|2}A x y x y B x y x y =+==-=，则A ∩B 是( )A 。
（1,－1） B.11x y =⎧⎨=-⎩ C.{(1,1)}- D 。
{1,－1｝ 3、“龟兔赛跑”讲述了这样的故书：领先的兔子看着慢慢爬行的乌龟，骄傲起来。
睡了一觉,当它醒来时．发现乌龟快到终点了，于是急忙追赶,但为时已晚，乌龟还是先到达了终点……．用1S 、2S 分别表示乌龟和兔子所行的路程(t 为时问)，则下图与故事情节相吻合的是（ )4、函数)2(xf y =的定义域为[1,2］，则函数)(log 2x f y =的定义域为（ ）A ．[0，1］B ．[1,2］C ．［2,4］D ．[4，16] 5、式子8.1log 7log 37log 235log5555-+-的値是（ ）A ．1B ．2C ．3D 。
4 6、已知b a b a、，则2log 2log0<<的关系是（ ）A ．0〈a 〈b 〈1B ．0<b 〈a 〈1C ．b 〉a >1D ．a >b 〉1 7、函数f （x ）=x 2+2(a －1)x +2在区间（—∞,4)上递减，则a 的取值范围是 （ ）A.[)3,-+∞ B 。
(],3-∞- C.（—∞，5) D.[)3,+∞8、设偶函数f （x)的定义域为R ，当x [0,)∈+∞时f(x ）是增函数,则f （-2),f(π），f （—3)的大小关系是 （ ）A ．f(π）>f （-3)>f （—2)B 。
甘肃天水一中2010-2011学年高二第一阶段考试试题数学理
天水市一中2009级高二学年度第一学期第一阶段考试题理科数学一、选择题（本大题共10小题，每小题4分，共40分）在每小题给出的四个结论中，只有一项是符合题目要求的，1．直线1mx ny +=同时经过第一、三、四象限的必要不充分条件是（ ）A ．00m n ><且B ．m n ⋅<0C ．00m n <<且D ．00m n >>且2．已知y x yx y x +=+>>则且,1910,0的最小值是 （ ） A ．4 B ．12 C ．16 D ．183．以原点为圆心，且截直线3x ＋4y ＋15=0所得弦长为8的圆的方程是 （ ）A ．225x y +=B ．2225x y +=C ．224x y +=D ．2216x y +=4．过点P(4,1)，切在两坐标轴上截距相等的直线方程为（ ）A ．x+y=5B ．x-y=3C ．x-y=3或x=4yD ．x+y=5或x=4y5．圆22210x y x +--=关于直线2x －y+3=0对称的圆的方程为 （ ）A ．()()221232x y ++-= B ．()()221232x y -++= C ．()()22322x y ++-= D ．()()22322x y -++=6．设点(2,3)A -，(3,2)B 若直线20ax y ++=与线段AB 有交点，则a 的取值范围是 （ ）A ．54,,23⎛⎤⎡⎫-∞-+∞ ⎪⎥⎢⎝⎦⎣⎭U B ．45,32⎡⎤-⎢⎥⎣⎦ C ．54,23⎡⎤-⎢⎥⎣⎦D ．45,,32⎛⎤⎡⎫-∞-+∞ ⎪⎥⎢⎝⎦⎣⎭U 7．直线210x a y ++=与直线2(1)30a x by +-+=互相垂直，则ab 的最小值为 （ ）A ．1B ．2C ．3D ．48．直线1l 的方向向量为(1,2)a =r ,直线2l 的方向向量为(1,3)b =-r ,那么1l 到2l 的角是（ ）A ．30°B ．45°C ．150°D ．160°9．若直线240(,)mx ny m n R +-=∈始终平分圆22420x y x y +--=的周长，则m n ⋅取值范围是 （ ）A ．(0,1)B ．(]0,1C ．(),1-∞D ．(],1-∞10．一批救灾物资随26辆汽车从某市以v km/h 的速度直达灾区，已知两地公路线长400km ，为了安全起见，两辆汽车的间距不得小于（汽车本身长度不计），那么这批物资全部运到灾区，至少需要 （ ）A ．10hB ．15hC ．20hD ．25h二、填空题（本大题共4小题，每小题4分，共16分）11．已知直线10x my +-=与420mx y +-=平行，则m =___________．12．过点P(1,2)的圆221x y +=的切线方程为 ．13．一个点到点(4,0)的距离等于它到y 轴的距离，则这个点的轨迹方程为 ．14．已知302010x y x y x y ++≥⎧⎪-≤⎨⎪-+≥⎩，则222415x y x y +-++的最大值为___________．三、解答题（本大题共4小题，共44分）解答应写出文字说明、证明过程或演算步骤．15．（本小题满分10分）解不等式222711x x x -->- 16．（本小题满分10分）已知直线过点(5,4)P --，且与两坐标轴围成的三角形面积为5，求该直线方程。
甘肃省天水一中2011届高三上学期第一次阶段性测试 数学理
天水市一中2008级2010～2011学年度第一学期第一阶段考试数学试卷（理科)命题： 黄国林 审核： 蔡恒录本试卷分为第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分共150分，考试时间120分钟．注意事项：第Ⅰ卷答案涂在机读卡上，第Ⅱ卷各题的答案或解答过程均写在答题纸内的指定处，写在试卷上的无效．第Ⅰ卷(选择题 共60分)一、 选择题(本大题共12小题，每小题5分,共60分．在每小题给出的四个选项中，只有一项是符合题目要求的）．1．复数231i i -⎛⎫= ⎪+⎝⎭( ）A ．34i --B 。
34i -+ Ｃ。
34i - Ｄ.34i + 2．已知a 、b 为实数，则b a b a22log log 22>>是的 ( ）A ．充分非必要条件B ．必要非充分条件C ．充要条件D ．既不充分与不必要条件3.的图象关于函数11)(22+-=x x e e x f（ ） A ．y 轴对称 B ．直线y=-x C ．坐标原点对称 D ．直线y=x4。
函数|1|ln )(--=x x f 的单调递减区间为 （ ） A ．),1(+∞ B ．[)+∞,1 C ．（0,1） D ．)1,(-∞5. 函数)0(,12>+=-x y x的反函数是（ ）A ．21log ,(1,2]1y x x =-∈- B ．21log ,(1,2)1y x x =-∈- C ．21log ,(1,2]1y x x =∈- D ．21log ,(1,2)1y x x =∈-6. 等差数列1232183,2,3,}{a a a a a aa n++++=-= 则中= （ )A ．4B ．5C ．6D ．7 7．已知数列)(,1}{11n n n na a n a aa -==+满足，则通项公式为（ )A ．n an= B ．12-=n anC ．2n an= D ．1)1(-+=n nnn a8．设数列}{na 满足:)1(11,312≥-+==+n a a a a nnn , 则2010a = ( )A ．21 B ．3 C ． 2-D ．31-9. 已知函数⎪⎩⎪⎨⎧=≠--=)(,2)(,)(23a x a x ax xa x x f 是连续函数，则实数a 的值是 A ．1- B ．1 C ．1± D ．2-10．如图，在一个田字形区域A B C D 、、、中涂色,要求同一区域涂 同一颜色，相邻区域涂不同颜 色(A 与 C 、B 与D 不相邻）,现有4种颜色可供选择,则不同的涂色方案有 ( ）A. 48种B. 60种 C 。
甘肃省天水一中2011届高三英语第二阶段考试旧人教版
天水一中2008级2010—2011学年度第一学期第二阶段考试英语须知事项:1. 本试卷分第1卷〔选择题〕和第2卷〔非选择题〕两局部。
2．选择题使用2B铅笔填涂在机读卡上；非选择题使用0.5毫米黑色字迹的签字笔书写在答题卡上，字体工整，笔迹清楚。
3．请按照题号顺序在各题目的答题区域内作答，超出答题区域书写的答案无效；在草稿纸、试题卷上答题无效。
4．保持卡面清洁，不要折叠，不要弄破、弄皱，不准使用涂改液、修正带或刮纸刀。
5. 考试时间120分钟，总分为150分。
第I卷〔共两局部，共95分〕第一局部: 英语知识运用(共三节，总分为50分)第一节: 单词辨音(共5小题；每一小题1分，总分为5分)从A、B、C、D四个选项中找出其划线局部与所给单词的划线局部读音一样的选项，并在答题卡上将该项涂黑。
例：have A. gave B. save C. hat D. made答案是C1. chemistA. machineB. characterC. coachD. bench2. shortcomingA. welcomeB. handsomeC. outcomeD. comb3. expectationA. exampleB. exerciseC. exactD. exist4. anyhowA. basicB. paleC. damageD. many5. uncertainA. paintB. mailboxC. tailorD. curtain第二节: 语法和词汇知识〔共15小题；每一小题1分，总分为15分〕从A、B、C、D四个选项中，选出可以填入空白处的最优选项，并在答题卡上将该项涂黑。
6. -----I should have gone to the wonderful concert with you yesterday.-----_______. If only we would have another such chance.A. Yes, you shouldB. What a shame！C. That’s all rightD. Take it easy7. In __________ most countries, a university degree can give you ______ flying start in life.A. the; aB. the; /C. /; /D. /; a8. the problem of land erosion〔侵蚀〕getting more serious, the local governmentis searching for a way to deal with it.A．As B．With C．When D．If9. I always have so many things to ______when I come back to the company after a trip abroad.A. add toB. contribute toC. attend toD. appeal to10. ______ is often the case, we have worked out the production plan.A. WhichB. AsC. ItD. What11. Just be patient. You _____ expect the world to change so soon.A. can’tB. need n’tC. may notD. will not12. Her shoes __________her dress; they look very well together.A. suitB. matchC. fitD. compare13. It _____ we had stayed together for a couple of weeks ______ I found we had a lot in common.A. was until; whenB. wasn’t until; whenC. was until; thatD. wasn’t until; that14. Although he in America for a long time, he’s never regretted his making hismind to return to his own country.A．stayed B．was staying C．has stayed D．had stayed 15. He is a strict but kind teacher,,in my opinion, my son loves and respects.A．one B．he C．the one who D．he who16. Life is tough in the city. In order to lose their ______, some people drink alcohol.A. temperB. strengthC. pressuresD. consciousness17. Nancy enjoyed herself so much ______ she visited her friends in Sydney last year.A. thatB. whichC. whenD. where18. ______ up from the book, I saw his eyes _______ on me in curiosity.A. To look；fixingB. Looking；fixedC. To look；fixedD. Looking；fixing19. ---- Drunk driving, which was once __________ occurrence, is now under control. ---- I agree with you．Actually no one is.A. generalB. frequentC. normalD. particular20. We should respect food and think about the people who don’t have_____ we have here and treat food nicely.A. whatB. whichC. thatD. whether第三节：完形填空〔共20小题；每一小题1.5分，总分为30分〕阅读下面短文，掌握其大意，从每题给出的A、B、C、D四个选项中，选出可以填入空白处的最优选项，并在答题卡上将该项涂黑。
甘肃省天水一中10-11学年高一英语上学期第二次阶段性测试题新人教版【会员独享】
天水市一中2010级2010—2011学年第一学期第二学段考试英语考试时间:90分钟总分为：100分第I卷选择题I.语音知识：(共5小题，每一小题1分，总分为5分)从A、B、C、D四个选项中，找出其划线局部与所给单词的划线局部读音一样的选项。
1. come A. cold B. cock C. honey D. improve2. dead A. eager B. great C. least D. threaten3. human A. studio B. ugly C. upstairs D. hunt4. ours A. outside B. advertise C. nervous D. clocks5. thirsty A. worth B. than C. although D. weatherII. 语法和词汇知识：〔共15小题，每一小题1分，总分为15分〕6. －I made it at last. I am on top of the world.－_____ .A. Congratulations.B. Don’t fall down.C. Oh, really ?D. So far, so good.7. It will be ___ wonderful world if all nations live in ____ peace with each other.A. a ; aB. the ; theC. a ; theD. a ; ／8. The hotel ____ you are thinking, Kate, is too dirty , I’m afraid.A. thatB. whichC. in whichD. of which9.－Is a new modern gym being built in our city now ?－Yes, and it ____ next year.A. has been finishedB. finishesC. will be finishedD. will finish10. It is ____ that I’d like to go for a picnic.A. very lovely a dayB. good lovely a dayC. such lovely a dayD. so lovely a day11. I’m not sure what will happen during t he trip. ____, I will try all possible means to get there .A. Even thoughB. If soC. AnyhowD. Instead12. It was because of bad weather ____ the football match had to be put off.A. soB. so thatC. whyD. that13. What great trouble we had ____ where his house was.A. in findingB. to findC. findD. found14. There are altogether 6 people in the room, the baby____.A. includeB. includingC. includedD. to include15. Mr. Smith, I often hear people say DVD, but I never know what they really mean. Would youtell me what DVD ____?A. acts asB. prefers toC. stands forD. points to16. He stopped and turned around _____.A. every few metersB. every other metersC. every a few metersD. every meters17. Bob ____ that he had stolen the money.A. fearedB. excusedC. admittedD. offered18. Tens of us had bread for supper, while the rest ____.A. hadn’tB. didn’tC. wasn’tD. weren’t19. Lewis won four gold medals in the 1984 Olympics, ____ him world-famous over-night.A. makingB. madeC. to makeD. that made20 It is not rare in ____ for people in ____ fifties to go to university for further education.A. 1990s ; theB. the 1990s ; ／C. the 1990s ; theirD. 1990s ; themIII:完形填空(共15小题：每一小题1分，总分为15分)We find different kinds of animals in the world. Some animals, such as tigers and lions live in big forest and they are called 21 animals. Some others like sheep and dogs are kept by men and they are called domestic(驯养) animals. These animals are very different from one another, but we can 22 them into big groups: those that eat other animals and those that eat grass and leaves. Animals like the 23 belong to the first group.Animals like cows, elephants and horses belong to the second group.Animals are of great use to human beings. Men 24 wild animals for their fur and meat. Domestic animals are 25 more important to men. Without them, life will be 26 . People make use of animals in many ways.Cows and pigs are useful to men’s27 . They give 80% of the meat men eat every year. Skin of some animals can be made into expensive overcoats and shoes, which are warm and comfortable and28 a long time. They are very welcome in 29 countries. Wool, which is now one of the most important material for textile(纺织) 30 comes from a special kind of 31 . From cows, we get milk. And we shouldn’t 32 that some domestic animals are kept for transport. Many people 33 ride horses. Arabs ride on camels which travel in deserts for days without 34 . In some places animals are still used to plough field. 35 is clear that men just can’t live without these animals.21. A. wild B. serious C. terrible D. fighting22. A. separate B. divide C. sell D. keep23. A. chicken B. tiger C. fish D. goat24. A. hunt B. discover C. raise D. care for25. A. quite B. every C. even D. some26. A. smooth B. difficult C. easy D. perfect27. A. life B. work C. family D. food28. A. last B. cost C. take D. dress29. A. cool B. cold C. warm D. foreign30. A. business B. industry C. trade D. way31. A. sheep B. dogs C. cows D. pigs32. A. forget B. remember C. realize D. notice33. A. always B. hardly C. still D. just34. A. resting B. drinking C. sleeping D. stopping35. A. That B. This C. It D. SoIV.阅读理解：〔共15小题：每一小题2分，总分为30分〕AA new study has found that the best way to make yourself feel happier is to think of something good that happened to you the day before.Volunteers who were asked to remember a pleasant event from past 24 hours began to feel happier right away．Other activities such as saying “Thank you〞and smiling also made volunteers feel happier, but not as much.Professor Richard Wiseman of Hertfordshire University planned the study．He got 26,000 people to go online to try out a few different activities to make them feel happier．They were told to be nice, remember a pleasant event from the day before, give thanks or smile for 15 seconds twice a day．The volunteers did these activities for one week.The result showed that thinking about one good thing that had happened the day before worked the best for making people happier.36．The text may probably be taken from _____.A．a personal anecdote(轶事) B．sports newsC．a history novel D．brief news37．Volunteers who _____ began to feel happier right away.A．thought of something good that happened the day beforeB．were asked to remember a pleasant event from the past 24 hoursC．did other activities like saying “thank you〞and smilingD．went online to try out a few different activities38．From the text we know that Richard Wiseman is a(an) _____.A．worker B．artist C．professor D．director39．The best title may probably be _____.A．Thinking about yesterday’s happiness to be happy todayB．Making a study to make people happier and youngerC．Letting out a secret to live a longer lifeD．Doing experiments to make people happierBThe Internet has become part of teenagers’ life.A news report on 3,375 students aged from 10 to 18 in seven Chinese cities found that 38 per cent of them believe they use the Internet often.While most of them get useful information and use the Internet to help in their studies, some are not using it in a good way. Many are playing online games too much. A few even visit Web sites they should not look at. A middle school teacher from Beijing warns that bad things can happen if young people spend too much time on the Internet. She had a student who used to be good at school. But then he started visiting sex Web sites. He went mad, cheated a girl and was taken away by the police.In order to help young people use the Internet in a good way, a textbook on good Internet behavior has started to be used in some Shanghai middle schools this term. The book uses real examples to teach students all about good ways of using the Internet. The book gives useful advice such as it's good to read news or find helpful information to study.Some students also make online friends. But if you are meeting a friend offline, make sure your parents know. Teachers and parents all think the book is a very good idea. This teacher said the book will be a guide for teens using the Internet. She believes it will keep students away from bad sites. “Many students are using the Internet without guidance from their parents,〞she said. “The book will teach students how to be a good person in the online world.〞40. The third paragraph mainly tells us that ________.A. some students are not using the Internet correctlyB. all students in Beijing use the Internet to help their school workC. a teacher in Beijing is worried about her studentsD. some students visit sex Web sites41. The textbook mainly tells us ________.A. why we should use the InternetB. not to visit sex Web sitesC. how to use the Internet correctlyD. how to get help from others42. The writer advises the readers to ________.A. let their parents know before visiting their online friendsB. not to make friends onlineC. read the textbook carefullyD. only read news on the Internet43. From this passage we know that ________.A. more and more students have given up visiting bad Web sitesB. schools a nd teachers begin to pay attention to students’ use of the InternetC. no more homework will be given in ShanghaiD. less and less information can be found on lineCI’m sure you know the song “Happy Birthday〞. But do you know who wrote the song and for whom it was written?The retired professor, Archibald A. Hill in Lucasville, USA could tell us the story. Ninety-seven years ago, two of Mr. Archibald Hill’s aunts, Miss Patty Hill and Miss Mildred Hill were asked to write some songs for a book called “Song Storied for the Sunday Morning〞. Miss Patty Hill and Miss Mildred Hill were both kindergarten teachers then. They loved children very much and wrote many beautiful songs for the book. One of them was the famous “Good Morning to You.〞The song said, “G ood morning to you, good morning to you, 高考资源网children, good morning to all.〞This song was very popular at that time among kindergarten children. But not many grown-ups knew it. A few years later little Archibald was born. As his aunt, Miss Patty Hill sa ng the song “Happy Birthday〞to the melody(曲调) of “Good Morning to you〞to her little nephew(侄子). She sang the song like this: Happy birthday to you! Happy birthday to you! Happy birthday, Archie! Happy birthday to you!Miss Patty Hill and her sister had never expected that this song would become so popular, but it really did. People all over the world like the song because of its simplicity in tune(曲调简单) and friendliness in words.44. Archibald A. Hill was _______.A. EnglishB. AmericanC. RussianD. Australian45. Professor Archibald A. Hill was Miss Mildred Hill’s ______.A. sonB. studentC. brotherD. nephew46. The song “Happy Birthday〞has a history of _______ years.A. 97B. more than 90C. less than 90D. about 9047. The sentence “it really did〞means _______.A. The song really became popularB. Their wish would really come trueC. People all over the world like to listen to the songD. Yes, but the son g didn’t become popularDAmericans have contributed (做贡献) to many art forms, and jazz, a type of music, is one of the art forms started in the United States. Black Americans, who sang and played the music of their homeland, created jazz.Jazz is a mixture of the music of Africa, the work songs the slaves sang, and religious(宗教) music. Improvisation (即兴表演) is an important part of jazz. This is why a jazz song sounds a little different each time it is played.Jazz bands formed in the late 1800s. They played in bars and clubs in many towns and cities of the South, especially New Orleans. New Orleans is an international seaport, and people from all over the world come to New Orleans to hear jazz.Jazz became more and more popular. By the 1920s, jazz was popular all over the United States. By the 1940s, you could hear jazz not only in clubs and bars, but in concert halls as well. Today, people from all over the world play jazz. Jazz musicians from the United States, Asia, Africa, South America, and Europe meet and share their music at festivals on every continent. In this way, jazz continues to grow and change.48. What can be the best title of the passage?A. American Art FormsB. The Development of JazzC. The Music of Black AmericansD. The Birthplace of Jazz49. From the text we can learn that ______.A. New Orleans is the place where jazz was very popularB. the American people are all jazz loversC. jazz is merrily sung by black people when workingD. jazz may become less popular as time goes on50. It took about______ years to make jazz popular in the United States.A. 200B. 120C. 80D. 40天水市一中2010级2010—2011学年第一学期第二学段考试英语答题纸座位号______第II卷V.单词拼写：〔每一小题1分，共10小题〕51.In less than two days 100,000 pieces were put inside twenty-seven_____(木制的) boxes.51._________52.Li Yan, a___ ( 志愿者) for the 2008 Olympic Games, is interviewed by Pausanias.52. ________53.Tom is ___(有信心的) to succeed.53. ________54.Seeing this, many a ___(路人) came to help the old woman. 54. ________55.What do you think of the play ___(表演) by the little children? 55. ________56.__(如今), many young people spend at least 3 hours on the Internet.56. ________57.He explained __(简要地) what we were to do next. 57. ________58.Thses ___(昆虫) can fly . 58. ________59.They were so popular that their fans formed clubs in order to get more ___(熟悉的) withthem.59. ________60.Only athletes who have reached the agreed standard for their event will be ___(接纳) ascompetitors.60. ________ VI.根据所学课文内容填空，每空填一个词：〔每一小题1分，共10分〕61._______ 62._______ 63._______. 64._______ 65._______66._______ 67._______. 68._______. 69._______. 70._______A: Frederick William I, could never have imagined that his greatest gift to the Russian people would have such an 61 history.B: Frederick William I, 62 whom the amber room belonged, decided not to keep it .C: I’ve come to your time to find out about the present-day Olympic Games because I know that in 2004 they were held in my 63.D. But I was always so lonely standing there 64 myself, until in the early 1960s they gave me a 65 connected by a network. I was able to share my knowledge with others through the World Wide 66.E: The 67 carpet traveled so fast that next minutes they were in Zimbabwe. Daisy turned around and found that she was 68 watched by an elephant. Farmers hunted us without mercy. They said we 69 their farms, and money from tourists only went to the large tour companiesF: Have you ever dreamed of 70 in front of thousands of people at a concert.VII.书面表达〔总分为15分〕请你以“Music and Life〞为题，用英语写一篇100词左右的短文，要点如下：1.音乐无处不在，音乐是我们生活的一局部。
甘肃省天水一中高一上学期第二次段考(数学).doc
甘肃省天水一中高一上学期第二次段考（数学）一、选择题（本大题共10小题；每小题4分，共40分）在每小题给出的四个结论中，只有一项是符合题要求的)1．若集合}2|{xy y M -==，集合P M x y y P ⋂-==则},1|{等于（ ）A ．{y|y>1}B ．{y|y ≥1}C ．{y|y>0}D ．{y|y ≥0} 2．“ab x =”是“a , x , b 成等比数列”的 （ ）A ．充分不必要条件B ．必要不充分条件C ．充要条件D ．既不充分又不必要条件3．函数)12(log 21-=x y 的定义域是（ ）A ．),21(+∞B ．),1[+∞C ．]1,21(D ．]1,(-∞4．设S n 等差数列}{n a 的前n 项和，若S 15=90，则a 8等于 （ ）A ．6B ．445 C ．12 D ．245 5．已知x x f 26log )(=，那么)8(f 等于（ ）A ．34B ．8C ．18D ．21 6．若数列{a n }的通项22293n a n n =-++，则此数列的最大项的值是（ ）A ．107B ．108C ．10881D ．1097.设137x=，则（ ） A ．-2＜x ＜-1 B ．-3＜x ＜-2C ．-1＜x ＜0D ．0＜x ＜18. 函数()1101x y a a a +=->≠且的图像恒过定点（ ）A ．（0，1）B ．（0，－1）C ．（－1，0）D ．（－1，－1）9. 若函数2()48f x x kx =--在[5,8]上是单调函数，则k 的取值范围是（ ）A (],40-∞B [40,64]C (][),4064,-∞+∞ D [)64,+∞10. 方程2log (4)2xx +=-的实根个数为（ ）A ．0B ．1C ．2D ．3二、填空题（本大题共四个小题；每小题4分，共16分）把答案填在题中横线上。
11．函数)352(log 221++-=x x y 的单调递增区间为 。
甘肃天水市一中高一10—11学年第一学段考物理试题
天水市一中2010—2011学年度第一学期2010级第一学段考试试题物理命题：麻尚忠杨荣审核：张来胜一、选择题(本题共12小题，每小题4分，共48分。
在下列各题的四个选项中，至少有一个选项符合题目要求，全选对得4分，选对但不全得2分，错选或不选得0分）1．以下的计时数据指时间的是（）A．中央电视台新闻联播节目每日19时开播B．某人用15s跑完100mC．“我们要珍惜每一分每一秒"中的“一秒”D．唐山开往北京的4420次列车于16:40从唐山站发车2．北京奥运火炬成功登上珠峰，如图所示是火炬手攀登珠峰的线路图，据此图判断下列说法正确的是（）A．由起点到终点火炬手所走线路的总长度等于位移B．线路总长度与火炬手所用时间的比值等于火炬手的平均速度C．在计算登山运动的速度时可以把火炬手当成质点D．拉萨处的重力加速度要比北极的重力加速度小3．在2008年北京奥运会中，牙买加选手博尔特是一公认的世界飞人，在“鸟巢"400m环形赛道上，博尔特在男子100m决赛和男子200m决赛中分别以9.69s和19。
30s的成绩破两项世界纪录,获得两枚金牌。
关于他在这两次决赛中的运动情况，下列说法正确的是（)A．200m决赛中的位移是100m决赛的两倍B．200m决赛中的平均速度约为10.36m/sC．100m决赛中的平均速度约为10.32m/s D．100m决赛中的平均速度约为20。
64m/s4．下列几个图象,可以表示物体在做匀速直线运动的是（）5．以下关于速度和加速度的说法中，正确的是（) A．速度是描述运动物体位置变化快慢的物理量,加速度是描述运动物体运动快慢的物理量B．速度和加速度都是矢量C．加速度大的物体，运动速度也大，速度的变化量也一定大D．加速度的方向就是物体运动的方向6．如图所示是一沿笔直公路做匀加速直线运动的汽车的速度计。
某同学在汽车中观察速度计指针位置的变化,开始时指针指示在如图甲所示的位置，经过7s 后指针如图乙所示,下列说法正确的是（ ）A ．右速度计直接读出的是汽车运动的平均速度B ．右速度计直接读出的是汽车7s 时的瞬时速率C ．汽车运动的加速度约为5.7m/s 2D ．汽车运动的加速度约为1.6m/s 27．如图所示为某物体做直线运动的图象，关于这个物体在0～4s 内运动的情况，下列说法中正确的是( ）A ．物体始终向同一方向运动B ．加速度大小不变，方向与初速度方向相同C ．4s 末物体离出发点最远D ．4s 内通过的路程为4m ，位移为零8．物体从静止开始做匀加速直线运动，已知第3s 内与第2s 内的位移之差是6m,则可知( ）A ．第1 s 内的位移为4 mB ．第2s 末的速度为12m/sC ．物体运动的加速度为3m/s 2D ．物体在前4s 内的平均速度为15m/s 2 0 -22 4。
- 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)。
天水市一中2010－2011学年度第一学期2008级第二阶段考试试题物 理命题：李世峰 审核：孙维忠一．选择题（本题共10小题，每小题4分。
在每小题给出的四个选项中，至少有一项是符合题目要求的，选出答案后，用铅笔把答题卡上对应题目的答案标号涂黑。
）1．右图为节日里悬挂灯笼的一种方式，A 、B 点等高，O 为结点，轻绳AO 、BO 长度相等，拉力分别为F A 、F B ，灯笼受到的重力为 G ．下列表述正确的是A ．F A 一定小于GB ．F A 与F B 大小相等C ．F A 与F B 是一对平衡力D ．F A 与F B 大小之和等于G2．如图所示，轻杆的一端有一个小球，另一端有光滑的固定轴O 。
现给球一初速度，使球和杆一起绕O 轴在竖直面内转动，不计空气阻力，用F 表示球到达最高点时杆对小球的作用力，则FA ．一定是拉力B ．一定是推力C ．一定等于0D ．可能是拉力，可能是推力，也可能等于03．某物体做直线运动的v -t 图象如图（甲）所示，据此判断图乙（F 表示物体所受合力，x 表示物体的位移）四个选项中正确的是4． 一水平抛出的小球落到一倾角为θ的斜面上时，其速度方向与斜面垂直，运动轨迹如右图中虚线所示。
小球在竖直方向下落的距离与在水平方向通过的距离之比为A ．1tan θB ．12tan θC ．tan θD ．2tan θ5． 在抗洪抢险中，战士驾驶摩托艇救人。
假设江岸是平直的，洪水沿江向下游流去，水流速度为v 1，摩托艇在静水中的航速为v 2，战士救人的地点A 离岸边最近处O 的距离为d 。
如战士想在最短时间内将人送上岸，则摩托艇登陆的地点离O 点的距离为vt/s 图（甲）A ．21222v v dv - B ．0 C ．21v dv D ．12v dv 6． 同步卫星A 的运行速率为V 1，向心加速度为a 1，运转周期为T 1；放置在地球赤道上的物体B 随地球自转的线速度为V 2，向心加速度为a 2，运转周期为T 2；在赤道平面上空做匀速圆周运动的近地卫星C 的速率为V 3，向心加速度为a 3，动转周期为T 3。
比较上述各量的大小可得A ．T 1=T 2>T 3B ．V 3> V 2> V 1C ．a 1< a 2= a 3D ．a 3> a 1> a 27．人造卫星1和2绕地球做匀速圆周运动的周期分别为T 1和T 2，设在卫星1、卫星2各自所在的高度上的重力加速度大小分别为g 1、g 2，则A ．4/31122g T g T ⎛⎫= ⎪⎝⎭B ． 4/31221g T g T ⎛⎫= ⎪⎝⎭ Ｃ． 21122g T g T ⎛⎫= ⎪⎝⎭D ． 21221g T g T ⎛⎫= ⎪⎝⎭ 8．竖直上抛一球，球又落回原处，已知空气阻力的大小正比于球的速度。
Ａ．上升过程中克服重力做的功等于下降过程中重力做的功Ｂ．上升过程中克服重力做功的平均功率大于下降过程中重力做功的平均功率Ｃ．上升过程中克服阻力做功的平均功率大于下降过程中克服阻力做功的平均功率 Ｄ．上升过程中克服阻力做功的平均功率等于下降过程中克服阻力做功的平均功率9． 物体在合外力作用下做直线运动的v 一t 图象如图所示。
下列表述正确的是A ．在0～1s 内，合外力做正功B ．在0～2s 内，合外力总是做负功C ．在0～3s 内，合外力做功为零D ．在1～2s 内，合外力做正功10．图示为某探究活动小组设计的节能运动系统。
斜面轨道倾角为30°，质量为M 的木箱与。
木箱在轨道端时，自动装货装置将质量为m的货物装入木箱，然后木箱载着货物沿轨道无初速滑下，与轻弹簧被压缩至最短时，自动卸货装置立刻将货物卸下，然后木箱恰好被弹回到轨道顶端，再重复上述过程。
下列选项正确的是A ．m ＝MB ．m ＝2MC ．木箱不与弹簧接触时，上滑的加速度大于下滑的加速度D．在木箱与货物从顶端滑到最低点的过程中，减少的重力势能全部转化为弹簧的弹性势能二．实验题（本题2小题，共21分。
）11．某同学得用图1所示装置做“研究平抛运动”的实验，根据实验结果在坐标纸上描出了小球水平抛出后的运动轨迹，但不慎将画有轨迹图线的坐标纸丢失了一部分，剩余部分如图2所示，图2中水平方向与竖直方向每小格的长度均代表0.10m ，P 1、P 2和P 3是轨迹图线上的3个点，P 1和P 2、P 2和P 3之间的水平距离相等。
完成下列填空：（重力加速度取9.8m /s 2）（1）设P 1、P 2、和P 3的横坐标分别为x 1、x 2和x 3，纵坐标分别为y 1、y 2和y 3，从图2中可读出︱y 1－ y 2︱=_________m ，︱y 1－ y 3︱=__________m ，︱x 1－ x 2︱=__________m （保留两位小数）。
（2）若已测知抛出后小球在水平方向做匀速运动，利用（1）中读取的数据，求小球从P 1运动到P 2所用的时间为___________s ，小球抛出后的水平速度为___________m/s （均可用根号表示）。
，12．在“验证机械能守恒定律”的实验中，已知打点计时器所用电源的频率为50Hz 。
查得当地的重力加速度g ＝9.80m/s 2。
测得所用的重物的质量为1.00kg 。
实验中得到一条点迹清晰的纸带，把第一个点记作0，另选连续的4个点A 、B 、C 、D 作为测量的点。
经测量知道A 、B 、C 、D 各点到0点的距离分别为62.99cm 、70.18 cm 、77.76 cm 、85.73 cm 。
根据以上数据，可知重物由0点运动到C 点，重力势能的减少量等于 J ，动能的增加量等于 J(取3位有效数字)。
三． 计算题（本题4小题，共39分。
写出必要的文字说明和演算步骤。
）13．已知地球半径为R ，地球表面重力加速度为g ，不考虑地球自转的影响。
（1）推到第一宇宙速度v 1的表达式；（2）若卫星绕地球做匀速圆周运动，运行轨道距离地面高度为h ，求卫星的运行周期T 。
14． 在起重机将质量m=5×103 kg 的重物竖直吊起的过程中，重物由静止开始向上作匀加速直线运动，加速度a =0.2 m/s 2，当起重机输出功率达到其允许的最大值时，保持该功率直到重物做v m =1.0 m/s 的匀速运动。
取g=10 m/s 2，不计额外功。
求：(1) 起重机允许输出的最大功率。
(2)重物做匀加速运动所经历的时间和起重机在第2秒末的输出功率。
15．游乐场内有一种叫“空中飞椅”的游乐项目，示意图如图16所示，在半径为r=4m的水平转盘的边缘固定着N=10条长为L=10m的钢绳，纲绳的另一端连接着座椅（图中只画出2个），转盘在电动机带动下可绕穿过其中心的竖直轴OO′转动。
设在每个座椅内坐着质量相同的人，可将人和座椅看成是一个质点，人和座椅的质量为m=60kg，已知重力加速度为g=10m/s2，不计钢绳的重力及空气的阻力。
当转盘以某一角速度ω匀速转动时，座椅从静止开始随着转盘的转动而升高，经过一段时间后达到稳定状态，此时钢绳与转轴在同一竖直平面内，与竖直方向的夹角为θ=37︒。
求（1）稳定时钢绳对座椅的拉力F的大小及转盘转动的角速度ω；（2）每个座椅从静止开始到随转盘稳定转动的过程中，绳子的拉力对座椅做的功；（3）如果带动转盘的电动机输出机械功率的效率为80%，转盘因自身转动及克服各种摩擦损失的机械功率为20%，求从座椅开始运动到随转盘稳定转动的过程中，电动机消耗的电能。
天水市一中2010－2011学年度第一学期2008级第二阶段考试参考答案物 理1.B2. D3.Ｂ4.Ｂ5. C6. ＡD7. B8.A 、 B 、C9.A Ｃ 10.ＢＣ11. （1）0.60 1.60 0.60（2）3.012. 7.62， 7.5613.（1）设卫星的质量为m ，地球的质量为M ，在地球表面附近满足 2Mm G mg R =得 2G M R g= ① 卫星做圆周运动的向心力等于它受到的万有引力212v Mm m G R R= ②①式代入②式，得到1v =（2）考虑①式，卫星受到的万有引力为222()()Mm mgR F G R h R h ==++ ③ 由牛顿第二定律224()F m R h Tπ=+ ④③、④联立解得T = 14. 解析： (1)设起重机允许输出的最大功率为P 0，重物达到最大速度时，拉力F 0等于重力。
P 0＝F 0v m ①F 0＝mg ②代入数据，有：P 0＝5.0×104W ③(2)匀加速运动结束时，起重机达到允许输出的最大功率，设此时重物受到的拉力为F ，速度为v 1，匀加速运动经历时间为t 1，有：P 0＝F 0v 1 ④F －mg ＝m a ⑤v 1＝a t 1 ⑥由③④⑤⑥，代入数据，得：t 1＝5 s ⑦T ＝2 s 时，重物处于匀加速运动阶段，设此时速度为v 2，输出功率为P ，则v 2＝a t ⑧P ＝F v 2 ⑨由⑤⑧⑨，代入数据，得:P ＝2.04×104W 。
15．解：（1）对人和座椅，绳的拉力与重力的合力指向圆心，由牛顿第二定律F = mg /cos θ =750Nmg tan θ=m ω2R由几何关系得：R =r +l sin θ代入数据得：F = 750N2ω=rad/s （2）在转盘从静止启动到转速稳定这一过程中，由能量守恒定律 mgh mv W +=221 h =l （1-cos θ）v=ωR解得W =3450 J（3）设在座椅从静止开始到随转盘稳定转动的过程中，电动机消耗的电能为EE ×80%×80%=N （mgh mv +221） 解得：E =5.4×104 J。