A: 清除口鼻内的污物
B: 进行5分钟后便停止
C:吹气时要捏住病人的鼻孔
D:吹气频率为15--20次/分
—Shall we have a smoke here?
—No, we _____ because this is gas station and the worker is carrying some petrol.
句子翻译(共5小题;每小题3分,满分15分)