5．If you have a cat，you already know that a cat isn't a dog that doesn't have to be walked．If you are about to bring a cat into your family，you need to understand that basic fact．The common wisdom is that dogs are friendlier than cats．
In recent years，scientists who have done DNA studies have offered a better way to understand cats．Unlike other animals that people feed，cats domesticated themselves，and，in a way，trained humans．Cats decided to live close to humans because doing so benefited the cats themselves．
Studies show that cats have lived with humans for about 12，000 years，since people first settled down and started farming．When people started storing grain，mice arrived and started eating the grain．Clever cats figured out that the mice settlements where people stored grain were easy for hunting，so they started hanging around．Cats did what they needed to do to get the people to let them stay，but they kept up their independence．Over time，cats allowed humans to get a bit closer to them．Later，the farmers did befriend the cats．Certainly，it didn't do them any harm because they could see that the cats were really helping them out by eating mice．
Today，about a third of American families have cats．In most of those homes，the cat still more interested in pleasing themselves than in pleasing their human families．A dog may do anything it can to make you happy，bt kitty will teach you to make kitty happy．
9．Compared with dogs，cats areA．
A．colder
B．friendlier
C．more warm-hearted
D．more frightening
10．According to the text，why do cats decide to stay close to humans？D
A．To keep up their independence．
B．To protect grain from mice．
C．To rely on humans for food．
D．To be useful to themselves．
11．What may be the best title for the text？D
A．A common point between dogs and cats
B．The reasons why people like dogs
C．A disadvantage of raising cats
D．The basic fact about cats．
分析 本文屬于說明文閱讀，作者通過這篇文章主要向我們描述了一些關于貓的基本事實，貓和人類是互利互惠的．
解答 9．A．細節理解題．根據第一段If you have a cat，you already know that a cat isn't a dog that doesn't have to be walked 可知貓比狗更加冰冷獨立；故選A．
10．D．細節理解題．根據第二段cats domesticated themselves，and，in a way，trained humans．Cats decided to live close to humans because doing so benefited the cats themselves可知貓決定留下來接近人類是因為有益于自己；故選D．
11．D．推理判斷題．根據第一段If you，re about to bring a cat into your family，you need to understand that basic fact．The common wisdom is that dogs are friendlier than cats可知最好的標題文字是關于貓的基本事實；故選D．
點評 本文是科教類閱讀理解．做這類題材閱讀理解時要求考生對文章通讀一遍，做題時結合原文和題目有針對性的找出相關語句進行仔細分析，結合選項選出正確答案．推理判斷題也是要在抓住關鍵句子的基礎上合理的分析才能得出正確答案，切忌胡亂猜測，一定要做到有理有據．
