既可镇惊安神，又可利尿通淋的药物是（）
A.朱砂
B.琥珀
C.龙骨
D.柏子仁
E.远志
参考答案：B
--- What about concert?
--- It was too boring, you know, concert for me.
A．a; the
B．the; the
C．a; /
D．the; a
传动链轮由哪几部分组成？
