本试卷满分120分,考试时间120分钟.
1.-2的相反数是 ( )
A.2 B.-2 C. ![](https://wkrtcs.bdimg.com/rtcs/image?w=14.67&md5sum=d6804fcb001a73772c1ba77ef7ad4bda&sign=dbf9580b0a&rtcs_flag=2&rtcs_ver=3&l=webapp&bucketNum=287&ipr={"t":"img","r":"r_35","w":"14.67","h":"38.67","dataType":"gif","c":"word/media/image1.gif"})
D.
2.2016年某市用于资助贫困学生的助学金总额是9 680 000元,将9 680 000用科学记数法表示为 ( )
A. ![](https://wkrtcs.bdimg.com/rtcs/image?w=60.00&md5sum=d6804fcb001a73772c1ba77ef7ad4bda&sign=dbf9580b0a&rtcs_flag=2&rtcs_ver=3&l=webapp&bucketNum=287&ipr={"t":"img","r":"r_35","w":"60.00","h":"20.00","dataType":"gif","c":"word/media/image3.gif"})
B. C. D.
3.计算![](https://wkrtcs.bdimg.com/rtcs/image?w=41.33&md5sum=d6804fcb001a73772c1ba77ef7ad4bda&sign=dbf9580b0a&rtcs_flag=2&rtcs_ver=3&l=webapp&bucketNum=287&ipr={"t":"img","w":"41.33","h":"22.67","dataType":"gif","c":"word/media/image7.gif"})
的结果是 ( )
A. ![](https://wkrtcs.bdimg.com/rtcs/image?w=20.00&md5sum=d6804fcb001a73772c1ba77ef7ad4bda&sign=dbf9580b0a&rtcs_flag=2&rtcs_ver=3&l=webapp&bucketNum=287&ipr={"t":"img","r":"r_35","w":"20.00","h":"17.33","dataType":"gif","c":"word/media/image8.gif"})
B. C. D.
4.点![](https://wkrtcs.bdimg.com/rtcs/image?w=14.67&md5sum=d6804fcb001a73772c1ba77ef7ad4bda&sign=dbf9580b0a&rtcs_flag=2&rtcs_ver=3&l=webapp&bucketNum=287&ipr={"t":"img","w":"14.67","h":"16.00","dataType":"gif","c":"word/media/image12.gif"})
关于轴对称的点的坐标是 ( )
A.(1,2) B.(-1,2) C.(-1,-2) D.(-2,1)
5.下列式子为最简二次根式的是 ( )
A. ![](https://wkrtcs.bdimg.com/rtcs/image?w=22.67&md5sum=d6804fcb001a73772c1ba77ef7ad4bda&sign=dbf9580b0a&rtcs_flag=2&rtcs_ver=3&l=webapp&bucketNum=287&ipr={"t":"img","r":"r_35","w":"22.67","h":"22.67","dataType":"gif","c":"word/media/image15.gif"})
B. C. D.
6.九年级(1)班15名男同学进行引体向上测试,每人只测一次,测试结果统计如下：
引体向上数/个 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
人数 | 1 | 1 | 2 | 1 | 3 | 3 | 2 | 1 | 1 |
这15名男同学引体向上数的中位数是 ( )
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