Where are the ___________? [ ]
A. book
B. a book
C. books
答案:C
角的两条边是______线,这样的线有______个端点.
肝郁气滞证之胁痛特点是()
A.走窜不定
B.入夜尤甚
C.胁肋胀痛
D.引及胸背肩臂
E.每因情志变化而增减