A.they can’t mask the bad odor long enough
B.they can’t get to all the offending bacteria
C.their strong smell mixes with bad breath and makes it worse
D.they can’t cover the thick layers of mucus
5.We can infer from this passage that________.
A.offensive breath can’t easily be cured
B.elderly people are less offended by bad breath
C.heavy drinkers are less affected by bad breath
D.offensive breath is less affected by alcohol语篇解读 本文是一篇说明文。说明了口气(臭)的原因,虽然有些治疗措施,但是都不能从根本上治愈。
1.解析: 细节理解题。根据最后一段第二句“The liquid can mask bad breath smell with its own smell,but the effect lasts no more than an hour.”可知,答案选C。
答案: C
2.解析: 细节理解题。根据第二段第二句“So can stress,though it’s not understood why.”可知,答案选D。
答案: D
3.解析: 推理判断题。根据第一段“Mouth bacteria grow fast in airless conditions...the saliva stream slows...producing classic ‘morning breath’.”可知,在没有新鲜空气的情况下,唾液流动会缓慢,口腔细菌会增加。由此结合第二段第一句“Alcohol drinking...dries the mouth produces bad breath.”可知,喝酒会使人口干舌燥,造成唾液流动缓慢,从而产生口臭。
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