邓小平说:“怎么解决这个问题,我看只有实行‘一个国家,两种制度’。”“这个问题”中,目前已经解决的是( )
This is____ ____ ____ China.
x÷1.7-0.1=5
x=____
Mike used to be a top student, but he______ behind since he lost himself in computer games.