法的具体的外部表现形态即法由何种国家机关制定或认可,具有何种表现形式或效力等级,被称之为( )
A.法的渊源
B.法的效力
C.法的分类
D.法的形式
参考答案:D
有清热解毒、利湿化浊作用的方剂是()
A.五味消毒饮
B.平胃散
C.三仁汤
D.八正散
E.甘露消毒丹
Jerry did research in that field for a long time.He ________ invent something useful.[ ]
A.got down to
B.hoped himself to
C.set out to
D.devoted himself to