具有镇惊安神、平肝潜阳、聪耳明目、纳气平喘功效的药物是（）。
A.磁石
B.龙骨
C.乳香
D.朱砂
E.琥珀
参考答案：A
足球和篮球一共有15个。篮球有8个，足球有多少个？
_______ book of this writer is East and West.
A．Known to be the best
B．It was the best known
C．Known as the best
D．The best known
