6．For foreigners，entering a public toile t in China can be a horrifying experience．In the 1990s，a third of all complaints to tourism officials in Beijing concerned the design，and the bad smell of public toilets．
China has battled smelly toilets for at least 2，000 years．In the Kingdom of Wei （220-266 A．D．），visitors to the palace bathrooms would find boxes to cover their nose and ward off unpleasant smells．Both flushing （冲水） toilets and toilet paper were invented in China，however，only for the use of the emperor．
Today Chinese scientists have claimed victory in their battle to improve public restrooms，introducing a bacterial spray that can almost get rid of all the bad smell．First，a set of six types of bacteria work to break down the smelly compounds and then a perfume made from orange skin lightly scents （使芳香） the air．The"smellfree toilet"study from the Chinese Academy of Science was declared the"ultimate"cure toan"urgent"national issue．
"Five scientists have worked on this from 2011 to the beginning of this year，"said Dr．Yan Zhiying，a bacteriologist with the academy's Chengdu Institute of Biology，adding that they had spent￡140，000 on the project．
"Some local government officials here visited a sewage （污水） plant and saw that the treatment technology had come from Japan．They wanted a homegrown solution so they asked us to work on it，"he added．"We obtained bacteria from all types of waste from humans，pigs，chicken and duck s，and we tested our compounds one by one，"he said．"The smells coming out of public toilets，or trash cans，are made up of more than 160 different compounds，"he explained，adding that their bacteria spray can change and absorb many of them．
He boasted that the Chinese formula （配方），which costs only around￡5 per liter，has no side effects and can be used to remove any bad smell．
25．The underlined words"ward off"in Paragraph 2 can be replaced byD．
A．come out B．put out C．give out D．keep out
26．The underlined phrase"an‘urgent'national issue"refers toA．
A．the bad smell of public toilets
B．a horrifying experience
C．the treatment of sewage
D．the 160 smelly compounds
27．Which has not been mentioned as an advantage of the bacteria spray？A
A．Beautiful design．B．No side effects．C．Removing bad smells．D．Low price．
28．Which can we infer after the spray is used in toilets in China？B
A．People needn't use flushing toilets．
B．Tourists'complaints will be reduced．
C．A perfume is given off in the air．
D．Bacteria break down smelly compounds．
分析 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，能够出去厕所臭味，还能使厕所具有芳香味．
解答 25．D．猜测词义题．根据句子visitors to the palace bathrooms would find boxes to cover their nose 从句意来看，游客用纸盒子把鼻子盖住，显然是为了把难闻的臭味"挡在外面"，故选A项．
26．A．推理判断题．全文的焦点是中国公厕的臭味难闻，现在中科院进行"无味厕所"研究，可以推断出这个全国性的紧急问题就是：厕所的臭味．故选C项．
27．A．细节理解题．解析：依据文章最后一段句子He boasted that the Chinese formula （配方），which costs only around￡5 per liter，has no side effects and can be used to remove any bad smell中提到的优点只有前三项，而没有漂亮的设计这项，故选A．
28．B．推理判断题．依据第一段In the 1990s，a third of all complaints to tourism officials in Beijing concerned the design，and the bad smell of public toilets．
可知游客关于"公厕的臭味问题"的投诉占三分之一，由此可以推断：这种除臭剂在中国的公厕中喷洒后，游客的投诉抱怨会减少．故选C项．
点评 本篇阅读测试考生在阅读基础上的逻辑推理能力，要求考生根据文章所述事件的逻辑关系，对未说明的趋势或结局作出合理的推断；或根据作者所阐述的观点理论，对文章未涉及的现象、事例给以解释．考生首先要仔细阅读短文，完整了解信息，准确把握作者观点．
