在60个数中,3出现的频率是0.3,那么3出现的频数是______.
60×0.3=18.
3出现的频数是18.
故答案为:18.
下列高原,具有“千沟万壑,支离破碎”特点的是( )
A.云贵高原
B.青藏高原
C.内蒙古高原
D.黄土高原
17. ________ is expected, according to the on-line survey, is that prices of houses will not go up any longer.
A.It
B.As
C.Which
D.What