2009年恩施州中考数学试题.pdf

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1、评卷人得 分认真自治州恩施州初中毕业生学业考试数学试卷题号一二三四五六七八总分总分人得分友情提示：亲爱的同学，你好！今天是展示你才能的时候了，只要你仔细审题、认真答题，把平常的水平发挥出来，你就会有出色的表现，放松一点，相信自己的实力！1、试卷满分 120分，答卷时间120分钟；2、允许使用科学计算器.一、填空题：（请将答案填写题中的横线上本大题共8小题，每小题 3分，计 24分）1.9的算术平方根是.2 某班共有 x个学生，其中女生人数占45%，用代数式表示该班的男生人数是 .3 我州的旅游收入达52644.85 万元，比 增长了 40.7%.用科学记数法表示我州的旅游收入为元（保留三个有效

2、数字）.4分解因式：aa823=.5如图 1，已知 AB ED,B=58,C=35,则 D 的度数为 投一枚均匀的小正方体，小正方体的每个面上分别标有数字、.每次实验投两次，两次朝上的数字的和为的概率是7我市某出租车公司收费标准如图2所示，如果小明只有19元钱，那么他乘此出租车最远能到达公里处8、观察数表图1EDCBA评卷人得 分1-6151-110A-4-2015653-6-5-4-3-2-11-11111111根据表中数的排列规律，则字母A所表示的数是二、选择题：（下列各小题都给出了四个选项，其中只有一项是符合题目要求的，请将符合要求的选项前面的字母代号填写在下面的答题栏内.本大题共 8小

3、题，每小题3分，计 24分）题 号9 10 11 12 13 14 15 16 答 案9若a=3，则a的值是:A.-3 B.3 C.31 D.310下列计算正确的是：A.633)(xx B.2446aaa C.2224)()(cbbcbc D 236xxx11如图 3,长方体的长为15，宽为 10，高为 2 0，点 B离点 C的距离为 5，一只蚂蚁如果要沿着长方体的表面从点A爬到点 B，需要爬行的最短距离是:A.215 B.25 C.1055 D.3512如果一元一次不等式组axx3的解集为3x.则a的取值范围是:A.3a B.3a C.3a D.3a13一张正方形的纸片，剪去两个一样的小矩形

4、得到一个“E”图案，如图4 所示，设小矩形的长和宽分别为x、y，剪去部分的面积为20，若 2x10，则 y 与 x 的函数图象是:仔 细 选一选哟！文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1

5、I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V

6、1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10

7、V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL1

8、0V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL

9、10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:C

10、L10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9文档编码:

11、CL10V1I7O10E2 HD6L8T9R10Z4 ZN5J3L6V1C9评卷人得 分14某种衬衣的价格经过连续两次降价后，由每件150元降至 96元，平均每次降价的百分率是：A.20%B.27%C.28%D.32%.如图 5，在 ABC 中，C=90,B=60,D是 AC 上一点，ABDE于E,且,1,2 DECD则BC的长为：A.2 B.334 C.32 D.3416.如图 6，O的直径 AB垂直弦 CD于 P，且 P是半径 OB 的中点，CD 6cm，则直径AB的长是:A.32cm B.23 cm C.24 cm D.34 cm 三、解答题(本题共两个小题，每题8分,共计 16分)17

12、.求代数式的值：)2422(4222xxxxxx，其中22x图5EDCBA解答应写出文字说明、证明过程或演算步骤.文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编

13、码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y

14、9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编

15、码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y

16、9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编

17、码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y

18、9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3评卷人得 分18.两个完全相同的矩形纸片ABCD、BFDE如图 6放置,BFAB.求证:四边形BNDM为菱形.四、解答题(本题满分 8分)19.，恩施州生产总值（GDP）为 2000年以来年度首次实现两位数增速.根据图和表所提供的信息，解答下列问

19、题：（注：生产总值=第一产业的产值+第二产业的产值+第三产业的产值）ABCDEFMN图725.3%35.9%第二次产业第一次产业第三次产业2008年GDP 三次产业构成文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1

20、 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3

21、I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1

22、 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3

23、I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1

24、 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3

25、I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3评卷人得 分（1）恩施州生产总值是的倍（精确到 0.1）；（2）恩施州第三产业的产值占当年全州生产总值的百分比为%,第三产业的产值为亿元（精确到 1亿）；（3）恩施州人均生产总值为元（精确到

26、1元），比上一年增长%（精确到0.1%）；（4）从图中你得到的信息是：（写一条即可）.五、解答题(本题共两个小题，每题8分,共计 16分)20.宽与长之比为1:215的矩形叫黄金矩形，黄金矩形令人赏心悦目，它给我们以协调，匀称的美感，如图9,如果在一个黄金矩形里画一个正方形，那么留下的矩形还是黄金矩形后面还有哦，请继续努力FDA文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J

27、1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A

28、3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J

29、1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A

30、3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J

31、1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A

32、3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3吗？请证明你的结论.21.在等

33、腰三角形 ABC 中，AB=AC，O为AB 上一点，以 O为圆心、OB长为半径的圆交BC于D，DEAC 交AC 于E.(1).求证：DE是 O的切线.(2).若 O与AC相切于 F，AB=AC=5cm，53sin A，求 O的半径的长.图 10EDOCBAFEDOCBA文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:

34、CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U

35、2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:

36、CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U

37、2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:

38、CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U

39、2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3评卷人得 分六、解答题(本题满分 10分)22.某超市经销A、B两种商品，A种商品每件进价

40、20 元，售价30 元；B种商品每件进价 35 元，售价48 元（1）该超市准备用800 元去购进A、B两种商品若干件，怎样购进才能使超市经销这两种商品所获利润最大（其中B种商品不少于7 件）？（2）在“五一”期间，该商场对A、B两种商品进行如下优惠促销活动：打折前一次性购物总金额优惠措施不超过 300 元不优惠超过 300 元且不超过400 元售价打八折超过 400 元售价打七折促销活动期间小颖去该超市购买A种商品，小华去该超市购买B种商品，分别付款210元与268.8 元.促销活动期间小明决定一次去购买小颖和小华购买的同样多的商品，他需付款多少元？文档编码:CR3H2U3S5J1 HV7S

41、8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文

42、档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S

43、8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文

44、档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S

45、8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文

46、档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S

47、8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3评卷人得 分七、解答题(本题满分 10分)23.恩施州自然风光无限，特别是以“雄、奇、秀、幽、险”著称于世.著名的恩施大峡谷（A）和世界级自然保护区星斗山（B）位于笔直的沪渝高速公路X同侧，AB=50km,A、B到直线 X的距离分别为10km和40km,要在沪渝高速公路旁修建一服务区P,向 A、B两景区运送游客.小民设计了两种方案，图10（1）是方案一的示意图(AP与直线 X垂直，垂足为 P),P

48、到A、B的距离之和 S1=PA+PB；图10（2）是方案二的示意图(点A关于直线 X的对称点是 A，连接 BA 交直线 X于点 P),P到A、B的距离之和 S2=PA+PB.(1).求S1、S2,并比较它们的大小.(2).请你说明 S2=PA+PB 的值为最小.(3).拟建的恩施到张家界高速公路Y与沪渝高速公路垂直，建立如图所示的直角坐标系，B 到直线 Y的距离为 30km,请你在 X 旁和 Y旁各修建一服务区P、Q,使P、A、B、Q 组成的四边形的周长最小.并求出这个最小值.图 11（1）PXBA文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3

49、H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8

50、 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3H2U3S5J1 HV7S8Y9U2P8 ZV1W9A3I7H3文档编码:CR3