朱砂的功效是（）
A.安神解毒
B.纳气定喘
C.平肝潜阳
D.利尿通淋
E.清心镇惊
参考答案：A, E
6和1的最小公倍数是______，8和6的最小公倍数是______．
It sounds like something is wrong with the car’s engine. ______ , we’d better take it to the garage immediately.
A．Otherwise
B．If not
C．If possible
D．If so
