福建省2016-2017学年七年级下学期第一次月考数学试题
一、选择题（每小题3分，共30分）
1．下列运算错误的是![](https://wkrtcs.bdimg.com/rtcs/image?w=3&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"3","h":"2","dataType":"png","c":"word/media/image1.png","imgOriW":324,"imgOriH":36})
（ ）
A．![](https://wkrtcs.bdimg.com/rtcs/image?w=116&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"116","h":"24","dataType":"gif","c":"word/media/image2.png"})
B．
C．![](https://wkrtcs.bdimg.com/rtcs/image?w=131&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"131","h":"24","dataType":"gif","c":"word/media/image4.png"})
D．
2． 如图5，直线AB与直线CD相交于点O，其中∠A0C的对顶角是（ ）
![](https://wkrtcs.bdimg.com/rtcs/image?w=114.66666666667&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"114.66666666667","h":"76","dataType":"gif","c":"word/media/image6.png"})
A．∠A0D B．∠B0D C．∠B0C D．∠A0B
![](https://wkrtcs.bdimg.com/rtcs/image?w=59&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"59","h":"17","dataType":"gif","c":"word/media/image7.png"})
得到的是 （ ）
![](https://wkrtcs.bdimg.com/rtcs/image?w=456&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"456","h":"104","dataType":"gif","c":"word/media/image9.png"})
4.下列![](https://wkrtcs.bdimg.com/rtcs/image?w=3&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"3","h":"1","dataType":"png","c":"word/media/image1.png","imgOriW":324,"imgOriH":36})
说法正确的是 （ ）。
A．两直线平行，同旁内角相等
B．两直线平行，同位角相等
C．两直线被第三条直线所截，内错角相等
D．若一个角的两边分别与另一个角的两边平行，则这两个角相等
5．一辆汽车在笔直的公路上行驶, 两次拐弯后, 仍在原来的方向上平行前进, 那么两次拐弯的角度是 ( )
A、第一次右拐50°, 第二次左拐130° B、第一次左拐50°, 第二次右拐50°
C、第一次左拐50°, 第二次左拐130° D、第一次右拐50°, 第二次右拐50°
6．按下列程序计算,最后输出的答案是 ( )
![](https://wkrtcs.bdimg.com/rtcs/image?w=401.33333333333&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"401.33333333333","h":"41.333333333333","dataType":"gif","c":"word/media/image10.png"})
A．![](https://wkrtcs.bdimg.com/rtcs/image?w=19&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"19","h":"21","dataType":"gif","c":"word/media/image13.png"})
B． C． D．
7．下列各式中能用平方差公式计算的是 （ ）
A．![](https://wkrtcs.bdimg.com/rtcs/image?w=99&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"99","h":"23","dataType":"gif","c":"word/media/image17.png"})
B． C． D．
8．下列计算正确的是 （ ）
A．![](https://wkrtcs.bdimg.com/rtcs/image?w=112&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"112","h":"24","dataType":"gif","c":"word/media/image21.png"})
B．
C．![](https://wkrtcs.bdimg.com/rtcs/image?w=160&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"160","h":"24","dataType":"gif","c":"word/media/image23.png"})
D．
9．若![](https://wkrtcs.bdimg.com/rtcs/image?w=43&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"43","h":"21","dataType":"gif","c":"word/media/image25.png"})
，，则的值是 （ ）
A．![](https://wkrtcs.bdimg.com/rtcs/image?w=23&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"23","h":"41","dataType":"gif","c":"word/media/image28.png"})
B． C． D．
10．已知![](https://wkrtcs.bdimg.com/rtcs/image?w=123&md5sum=fd34b4b9463a72773b0ed76a05f2484a&sign=05b2b972fe&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=70&ipr={"t":"img","w":"123","h":"23","dataType":"gif","c":"word/media/image32.png"})
， 则值为（ ）
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