食品保存的方法有( )
①高温 ②低温 ③保持干燥 ④保持湿润 ⑤曝露空气中 ⑥隔绝空气.
A:①③
B:①④⑤
C:②③⑥
D:②④⑥
—Shall we have a smoke here?
—No, we _____ because this is gas station and the worker is carrying some petrol.