求几个相同加数______,叫乘法.
乘法实际上是相同加数的加法的简便算法,例:5+5+5+5=5×4
所以,求几个相同加数和的简便运算,叫乘法,
故答案为:和的简便运算.
— Do you know our town?
— No, this is the first time I____here. [ ]
A. was
B. are coming
C. came
D. have come
销售前必须指定检验机构进行检验的是()
A.新药
B.首次在国内销售的药品
C.非处方药
D.医疗机构制剂
E.中药