There are many young trees on sides of the road. [ ]
A. every
B. each
C. both
D. all
答案:C
Jessie was sick _____ such noise.
A.of hearing
B.to hear
C.of being heard
D.heard
急性单纯性胃炎的主要病因()
A.细菌或其毒素
B.激素
C.饮烈酒和咖啡
D.进过冷或过热食物
E.暴饮暴食