郁金药材中呈纺锤形，断面橙黄色的是（）

A.黄丝郁金

B.绿丝郁金

C.温郁金

D.桂郁金

E.姜黄

You must take the（）steps by yourself; after you have begun, I will help you.

A.primitive

B.preliminary

C.primary

D.practicable