13．Many animals recognize their food because they see it．So do humans．When you see an apple or a piece of chocolate you know that these are things you can eat．You can also use other senses when you choose your food．You may like it because it smells good or because it tastes good．You may dislike some types of food because they do not look，smell or taste very nice．Different animals use different senses to find and choose their food．A few animals depend on only one of their senses，while most animals use more than one sense．
Although there are many different types of food，some animals spend their lives eating only one type．The giant panda eats only one particular type of bamboo．Other animals eat only one type of food even when given the choice．A kind of white butterfly will stay on the leaves of a cabbage，even though there are plenty of other vegetables in the garden．However，most animals have a more varied diet．The bear eats fruits and fish．The fox eats small animals，birds and fruits．The diet of these animals will be different depending on the season．
Humans have a very varied diet．We often eat food because we like it and not because it is good for us．In countries such as France and Britain，people eat foods with too much sugar．This makes them overweight，which is bad for their health．Eating too much red meat and animal products，such as butter，can also be bad for the health．Choosing the right food，therefore，has become an area of study in modern life．
1．From the text we can infer（推断） that humans and animalsC．
A．depend on one sense in choosing food
B．are not satisfied with their food
C．choose food in similar ways
D．eat entirely different food
2．Which of the following eats only one type of food？A
A．The white butterfly．
B．The small bird．
C．The bear．
D．The fox．
3．Certain animals change their choice of food whenA．
A．the season changes
B．the food color changes
C．they move to different places
D．they are attracted by different smells
4．We can learn from the last paragraph thatD．
A．food is chosen for a good reason
B．French and British food is good
C．some people have few choices of food
D．some people care little about healthy diet．
分析 本文讲述了一些生物的饮食习惯，同时作者也提到了人类的饮食习惯，建议人们关心自己的饮食健康，以免超重影响健康．
解答 1-4．CAAD
1．C 考查推理判断．根据"Many animals recognize their food because they see it．So do humans"可知，人和动物以相似的方式选择食物．故选C．
2．A 考查细节理解．根据"A kind of white butterfly will stay on the leaves of a cabbage，even though there are plenty of other vegetables in the garden"可知，white butterfly 只吃一种蔬菜．故选A．
3．A 考查细节理解．根据"The diet of these animals will be different depending on the season"可知，当季节改变时，某些动物会改变他们的食物选择．故选A．
4．D 考查推理判断．根据"In countries such as France and Britain，people eat foods with too much sugar．This makes them overweight，which is bad for their health"可知，有些人不关心饮食的健康问题．故选D．
点评 阅读理解考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
