— __________ try some fish? It looks delicious.
— It smells __________. I don't want to eat it.
A:Why not; bad
B:Why don't; good
C:Why not: good
D:Why don't; bad
如图中,如果把电键都闭合,两灯都能发光的电路是图____,两灯都不能发光的电路图是____ ,只有一个灯能发光的图是____
如图,滑板运动员以速度v0从离地高度为h的平台末端水平飞出,落在水平地面上.忽略空气阻力,运动员和滑板可视为质点,下列表述正确的是( )