天麻来源于()
A.薯蓣科,根茎
B.鸢尾科,根茎
C.兰科,块茎
D.姜科,块根
E.姜科,根茎
参考答案:C
The lecturer began by _____ us where the island was, and went on _____ about its
history.
A.telling;talking
B.to tell;to talk
C.telling;to talk
D.he told;talking
溶解固形物是指()。单位用()表示。