A:90°
B:60°
C:45°
D:30°
根据你对“宽带”、“数字”、“电子邮件”这几个术语的理解,以下说法错误的是( )
The man______of shooting 6 school children was caught by Beijing police,the XIN HUA News Agency reported on Friday.( )
关于x的一元二次方程(m﹣1)x2+5x+m2﹣3m+2=0的常数项为0,求m的值.