外感咳嗽一般均忌敛涩留邪,当因势利导;内伤咳嗽应防宣散伤正,从调护正气着眼。()
参考答案:对
选择填空。
I have supper ______ my family. [ ]
A. and
B. with
C. from
D. at
何谓有形效益与成本?何谓无形效益与成本?