听诊检查心音时,若心音与脉搏同时出现,此时的心音为()
A.第一心音
B.第二心音
C.第三心音
D.第四心音
E.缩期前杂音
参考答案:A
Food safety is important. Rules _____ to stop people from food pollution. [ ]
A. must make
B. must be made
C. can make
D. can't be made
治疗外感风热,常相须为用的药物是()
A.金银花
B.青黛
C.连翘
D.石膏
E.栀子