She ___________ to play chess with her father. [ ]
A. want
B. wants
C. wanting
答案:B
已知(m-n)2=8,(m+n)2=2,则m2+n2=( )。
传递给实现了java.awt.event.MouseMotionListener接口的类中mouseDragged( )方法的事件对象是【 】类。