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共50小题，约5290字。

　　汕头市2011年普通高中高三教学质量测评（一）
　　英语
　　I 语言知识及应用（共两节，满分45分）
　　第一节：完形填空（共15小题；每小题2分，满分30分）
　　阅读下面短文，掌握其大意，然后从1～15各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
　　The human nose is an underestimated tool. Humans are often thought to be  1___ 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  the majority of smells which sticrfaces. In fact though, we are extremely sensitive to smells, even if we do not generally realize it. Our noses are capable of  4  human smells even when these are  5  to far below one part in one million.
　　6     , some people find that they can smell one type of flower but not another, while others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate  7     smell receptors in the nose. These receptors are the cells which sense smells and send  8    to the brain. However, it has been found that even people insensitive to a certain smell at first can suddenly become sensitive to it when  9     to it often enough.
　　The  10   for insensitivity to smell seems to be that brain finds it  11    to keep all smell receptors working all the time but can  12   new receptors if necessary. 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     new smells when we visit someone else's. The brain finds it best to keep smell receptors _ 15    for unfamiliar and emergency signals such as the smell of smoke, which might indicate the danger of fire.
　　1. A. sensitive B. outstanding C. insensitive D. awkward
　　2. A. limited B. committed C. devoted D. conducted
　　3. A. catching B. ignoring C. missing D. tracking
　　4. A. distinguishing B. discovering C. determining D. detecting
　　5. A. reduced B. reserved C. rescued D. refused
　　6. A. Fortunately B. Strangely C Happily D. Amazingly
　　7. A. unusual B. particular C. unique D. typical
　　8. A. signs B. information C. messages D. signals
　　9. A. subjected B. left C. drawn D. exposed
　　10A. expectation B. expression C. extension D. explanation
　　11.A convenient B. competitive C. inefficient D. adequate
　　12.A introduce B. gather C. develop D. produce
　　13.A sure B. sick C. aware D tired
　　14.A tolerate B. resist C. neglect D. notice
　　15.A available B. reliable C. valuable D. suitable
　　第二节 语法填空（共10小题，每题1.5分，满分15分）
　　阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案写在答案卡标号为16—25的相应位置上。
　　Just up the road from my home is a field, with two horses in it. From a distance, each horse looks like any other horse. But if you get a ___16____( close) loo will notice o