2012年淮安数学中考试卷（Huaian mathematics examination roll, 2012）.doc

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2012年淮安数学中考试卷（Huaian mathematics examination roll, 2012）.doc

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2012年淮安数学中考试卷（Huaian mathematics examination roll, 2012）

2012年淮安数学中考试卷（Huaian mathematics examination roll, 2012） Huaian mathematics examination roll, 2012 First, the multiple-choice question (24 points out of the question) The opposite number of 1 is () A, B, C, 2 D, 2 2. In the following figures, the central symmetrical figure is () 3. The following operations are correct A, B, C, D, 4, as shown in figure AB, the O is the diameter of C in its O, if / A = 400, then the angle B degree () A, 800 B, 600 C, 500 D, 400 5, as shown in the figure, the top view of the geometry is () 6. The image of the inverse scaling function, shown in figure, is the range of the real number m ([source: ZXXK]] A, m1, B, m0, C, m1, D, m0 7, the solution of the equation is () [source: subject net ZXXK] A, B, C, D, 8, the following statement is correct A, two students, the average score of the same 5 times, the variance of the students more stable results B, a class selected two students to participate in the school speech contest, the result must be a boy and a girl C, the school weather team forecast the probability of rain tomorrow is 0.8, the possibility of rain tomorrow is more likely D, in order to understand the activities of Sunshine Sports in our city, we must adopt the method of census Two, fill in the blanks (30 points out of the question) 9,. In 10 and 2011, the per capita GDP in Huaian was about 35200 yuan, and 35200 was expressed in scientific notation. 11, the median of data 1, 3, 2, 1, and 4 is. 12. Factoring:. [source: Learning + subject + net, Z+X+X+K] 13, diamond ABCD, if the diagonal length AC = 8cm, BD=6cm, then the length of AB =. [source: subject network] 14, as shown in figure AB=AC, ABC, AD, BC group, as the pedal point D, if BAC=700 / BAD= is proposed. 15, as shown in figure M, the N and the cut, MN = 10cm / M, if the radius is 6cm, the radius of N. [source: Learning Science Web ZXXK] 16, if the value is between two integers a and a+1, then a=. 17. If the radius of the bottom of the cone is 2cm and the bus length is 5cm