能大补元气的药是（）
A、党参
B、人参
C、西洋参
D、太子参
E、刺五加
参考答案：B
Although they had made careful preparation, unexpected difficulties________in the course of their
experiments.[ ]
A. rose
B. raised
C. lifted
D. arose
下列基础中，（）种为扩展基础。（）
A.预制钢筋混凝土杯口基础
B.柱下条形基础
C.平板式筏形基础
D.箱形基础
