Have you decided where __________ on National Day.
A:travel
B:traveling
C:to travel
D:traveled
约—____ ____ 夫—____ ____ 汤—____ ____
前—____ ____ 邦—____ ____ 采—____ ____
5×8=____
50×8=____
500×8=____
某工厂生产的一批零件,出现次品的概率为5%,若生产这种零件10000个,大约出现次品多少个?