Does his teacher often help him ______ his study?[ ]
A. at
B. on
C. in
D. with
答案:D
治肝郁化火,呕吐吞酸,口苦胁痛,吴茱萸最宜配
A.黄芩
B.黄连
C.黄柏
D.黄芪
通常用于衡量经济体生产的所有物品和劳务价格水平变动的指标是( )。
A.消费物价指数
B.商品零售价格指数
C.国内生产总值平减指数
D.生产价格指数