A:Will there be
B:Should there be
C:There will be
D:There should be
While the man ____ (run) back home, he saw a dog by the side of the road.
定义x表示不超过实数x的最大整数,如1.8=1,﹣1.4=﹣2,﹣3=﹣3.函数y=x的图象如图所示,则方程x= 12 x2的解为( )#N.