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1、北京丰台区2010-2011学年度初三数学上册期末试卷及答案(Word版)丰台区20102011学年度第一学期期末练习 初三数学 2011.01 ,ABCDE/BCDE:BC,2:31. 如图，在中，D，E两点分别在AB、AC边上，且，若，则的值为( ) S:S,ADE,ABC4:99:42:33:2A. B. C. D. 22. 将抛物线向下平移1个单位得到新的抛物线，则新抛物线的解析是( ) y,3x22A. B. y,3x，1y,3x,122C. D. y,3(x，1)y,3(x,1)tan,3. 在小正方形组成的网络中，直角三角形的位置如图所示，则的值是( ) 3443A. B. C.
2、 D. 5534120:4. 在半径为18的圆中，的圆心角所对的弧长是( ) 12,10,6,3,A. B. C. D. 5. 抛物线的对称轴是直线( ) y,(x,1)(x，3)x,1x,1x,3x,3A. B. C. D. ky,(k,0)k6. 如图，矩形ABOC的面积为3，反比例函数的图象过点A的值为( ) 则，x3,1.5,6,3A. B. C. D. 7. 如图，一个圆形转盘被等分成七个扇形区域，上面分别标有数字1、2、3、4、5、6、7，转盘指针的位置固定，转动转盘后自由停止。转动转盘一次，当转盘停止转到时，记指针指向标有偶数所在区域的概率为P(偶数)，指针指向标有奇数所有区域的
3、概率为P(奇数)，则P(偶数)与P(奇数)的大小关系是( ) ,A. P(偶数) P(奇数) B. P(偶数) P(奇数) ,C. P(偶数) P(奇数) D. P(偶数) P(奇数) ,3AD/BC，B,90:AD,1AB,2AB,8. 如图，在梯形ABCD中，点2AP,xDE,APP是BC边上的一个动点(点P与点B不重合)，于点E，设，DE,y在下列图象中，能正确反映y与x的函数关系的是( ) a:b,c:da,12b,8c,15,9. 已知四条线段a、b、c、d之间有如下关系:，且，则线段d_ 2cos,1,0,10. 已知，则锐角_ Wang Department responsibl
4、e for the pro-democracy movement the Han Chang Yan Tomb. He used to work, wide exposure to four rural peasants, to publicize Japanese thought, and to establish the perimeter of the party organization Jiangnan anti-Japanese guerrilla people salvation. East water village Shen Yingjie, also participate
5、d in the Organization and served as team leader. August Zhu Xi Nan Xun Kang Wang, also has made a night attack bridge Japanese defenders, and the Eastern attack zhenze traitors was the puppet command, enemy steamer and seized a large quantity of firearms, ammunition, supplies and file photos of vict
6、ory. That same month, Zhu Wang achieved in deqing, Wu Kang border forces also recovered three mountains (Hui shan, Shan, dry mountain) victory. In September, the second guerrilla Brigade of the Communist Party Member Wen Yongzhi as captain of Wuxing County about 150 guns, to shake off the annexation
7、 of the Wuxing County Government, and he demanded, Zhejiang Province, Lin Jie Xu knows delegate to the West to lead. Decided to Jie Xu with the reputation of the identity of the Chinese Communist Party, Xu Jin talks with Zhu Xi, Zhu Bucheng Brigade of temperature programmed. Zhu Xi, agreed. Thus, cl
8、eaning party members into the Zhu Xi forces, such as Xu, Xu by superiors and sent to party members after all. In October, party group, Xu cleaning team leader, directly under the leadership of CPC Zhejiang Provincial Committee. Party groups actively working, restored Han chang and others from the pa
9、rty. Help Zhu Xi established the Department and strengthen youth service corps, the establishment of womens team, run training courses in rotation drawn the officers and men of the Regiment, group. Strengthening the political and ideological education of officers and men, advocacy and national salva
10、tion movement aim to inspire soldiers O，AOB,60:O，ACB11. 已知A，B是?上的两点，如果，C是?上不与A，B重合的任一点，那么的度数为_ 12Oy,x12. 如图，?的半径为2, 是函数的的图象，是函数的CC21212y,xy,x的图象，是函数的的图象，则阴影部分的面积是_ C322cos30:，sin45:,tan60:13. 计算: ,ABC，ABC,，ADEAD,3AB,714. 如图，在中，D、E两点分别在AC，AB两边上，AE,2.7，求AC的长。 5，615. 如图，在的网格图中， ,ABC的顶点A、B、C在格点(每个小正方形的顶
11、点)上， 请你在网格图中画一个， ,ABC111(使(相似比不为1)， ,ABC,ABC111且点，必须在格点上。 ABC111OAB,8OD,AB16. 如图，过?ABCD中的三个顶点A、B、D作?，且圆心O在?ABCD外部，于AB,8点E，的半径为5，求?ABCD的面积。 dentity of the Chinese Communist Party, Xu Jin talks with Zhu Xi, Zhu Bucheng Brigade of temperature programmed. Zhu Xi, agrehe demanded, Zhejiang Province, Lin
12、Jie Xu knows delegate to the West to lead. Decided to Jie Xu with the reputation of the i, and ty Member Wen Yongzhi as captain of Wuxing County about 150 guns, to shake off the annexation of the Wuxing County Governmentred three mountains (Hui shan, Shan, dry mountain) victory. In September, the se
13、cond guerrilla Brigade of the Communist Parrecoves, ammunition, supplies and file photos of victory. That same month, Zhu Wang achieved in deqing, Wu Kang border forces also efenders, and the Eastern attack zhenze traitors was the puppet command, enemy steamer and seized a large quantity of firearma
14、m leader. August Zhu Xi Nan Xun Kang Wang, also has made a night attack bridge Japanese dJapanese guerrilla people salvation. East water village Shen Yingjie, also participated in the Organization and served as te-of the party organization Jiangnan antiht, and to establish the perimeter democracy mo
15、vement the Han Chang Yan Tomb. He used to work, wide exposure to four rural peasants, to publicize Japanese thoug-Wang Department responsible for the prooldiershening the political and ideological education of officers and men, advocacy and national salvation movement aim to inspire strengtrps, the
16、establishment of womens team, run training courses in rotation drawn the officers and men of the Regiment, group. Sworking, restored Han chang and others from the party. Help Zhu Xi established the Department and strengthen youth service coively r, party group, Xu cleaning team leader, directly under the leadership of CPC Zhejiang Provincial Committee.
