1、(2011汕头一模)(1)The human nose is an underestimated tool.Humans are often thought to be _1_insensitive_ smellers compared with animals,but this is largely because,unlike animals,we stand upright.This means that our noses are _2_ to detecting those smells which float through the air,_3_missing_ the majo
2、rity of smells which stick to surfaces.In fact though,we are extremely sensitive to smells,even if we do not generally realize it.Our noses are capable of _4_detecting_ human smells even when these are _5_reduced_ to far below one part in one million.2.A.limited B.committed C.devoted D.conducted【答案及
3、解析】A考查固定短语的意思辨析，be limited to sth.意思是“限制于”，be committed to sth.意思是“有责任做某事”，be devoted to sth.意思是“全身心投入”。(2)This may also explain why we are not usually sensitive to our own smells we simply do not need to be.We are not _13_ of the usual smell of our own house but we _14_notice_ new smells when we vi
4、sit someone elses.The brain finds it best to keep smell receptors _15_available_ for unfamiliar and emergency signals such as the smell of smoke,which might indicate the danger of fire.13.A.sure B.sick C.aware D.tired【答案及解析】C考查固定短语的意思辨析，be sure of“确定”；be sick of“对反感”；be aware of“意识到”；be tired of“对感到
5、厌倦”。观察近几年的完形填空考题，主要考查考生的语篇理解能力。尽管减少了纯粹考查语法的题目，但仍然少不了考查语言的固定搭配，因此熟悉习惯用法可以在一定程度上提高解题的速度和准确性。【答案及解析】这篇完形填空谈论的是城市发展的问题。1.Aa significant change 一 个 显 著 的 变 化，deliberate细微的，精致的。2.Dcame out 出版，公布，这里表示报告的公布。【答案及解析】3.C根据上下文可知这里说的是都市人口的增长，强调之前的少和现在的多，所以用少于更合适。less than 少于，不到。4.B根据上下文意思，以及后文相对的developing world
6、可知应该是发达国家。【答案及解析】5.D仔细阅读的话可以发现下文就有答案，这里讲的是都市人口的增长，所以用growth。6.Clead to表示导致，通向，本段末也有出现过，在这里是说都市化有助于社会和经济的进步。【答案及解析】7.A从下文的描述可以看出过快的都市化也给城市带来了巨大压力，所以选pressure。8.D 城市为人们提供住房和服务。【答案及解析】9.Bdriven by 由驱动，由什么原因引起的。10.Bsocial division and differences in wealth 社会分化和财富上的差距。【答案及解析】11.Aexpand into rural areas 扩张到农村地区。12.Ccommon 表示某事件很普遍，平常。从下文的across the nation可知这种情况很普遍很常见。【答案及解析】13.Dmajor cities 大城市，与后文中的smaller cities形成对比。14.A这里是对前面情况的概括，a trend toward deurbanization 表示一种逆城市化的发展趋势。15.Cpossibilities 可能性，这里表示城市依然能够提供农村所不能提供的机会和可能性。
