文章大意:这是一篇说明文,介绍的是中科院成都生物研究所发明了一种细菌喷洒剂,能够除去各种异味。
13.The underlined words “ward off” in Paragraph 2 can be replaced by ________.
A.keep out B.take out
C.give out D.come out
答案:A 词义猜测题。根据画线词前的find boxes to cover their noses可知用盒子把鼻子盖住是为了挡住难闻的气味。keep out意为“阻止……进入”,符合语境。take out意为“拿出”,give out意为“分发;发出”,come out意为“出版;被揭晓”,均不符合语境。
14.The underlined phrase “an ‘urgent’ national issue” refers to ________.
A.the treatment of sewage
B.a horrifying experience
C.the bad smell of public toilets
D.the 160 smelly compounds
答案:C 词义猜测题。全文的焦点是中国公厕的臭味难闻,现在中科院正针对这个问题进行研究,显然这个全国性的紧急问题就是厕所的臭味。故选C项。
15.Which has not been mentioned as an advantage of the bacteria spray?
A.Low price. B.No side effects.
C.Removing bad smells. D.Beautiful design.
答案:D 细节理解题。依据文章最后一段He boasted that the Chinese formula, which costs only around £5 per liter, has no side effects and can be used to remove any bad smell. 可知,这个除味喷剂的优点有:价格低、没有副作用、可去除臭味。文中没有提到D项(设计美观)。故选D项。
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