具有活血祛瘀,凉血消痈,养血安神作用的药物是()
A.桃仁
B.川芎
C.丹参
D.没药
E.红花
参考答案:C
A=2×3×n2,B=3×n3×5(n为质数),那么A,B两数的最大公因数是( ),最小公倍数是( )。
---I don’t know _______. Can you help me? ---I think you should calm down and read texts.
A.how to do
B.what to do it
C.what to do
D.when to do