题目内容
1.Tropical fish hobbyists will tell you their tanks are a source of relaxation,but recent research suggests the fish might disagree.Many American households contain a fish tank,whose average size is less than 10gallons.Yet a study comparing the behavior of common freshwater fish found that those kept in such small tanks were more aggressive than those in larger ones and were more likely to fight.
"If people kept dogs in these conditions,they'd be put in prison,"said the author,Ronald Oldfield."In larger tanks,the fish were not in continuous eyesight of each other.They were swimming around,checking everything out rather than beating each other,"he added."It's something we should think about."
The study consisted of two experiments.In one,Dr.Oldfield tested the effects of overcrowding by keeping tank size constant(不变)while increasing the number of fish.In the other,he tested environment by placing three fish in tanks of different sizes.He then recorded their behavior at least two hours after feeding,to eliminate (排除) competitive behaviors related to food.While aggression seemed to remain constant regardless of the number of fish in a tank,it dropped off considerably once the fish were placed in a l00-gallon tank with several plants and rocks to form shelters.
The findings confirmed what he found when observing Midas in the wild."If you go out and observe these fish swimming in a river,"he said,"they're not aggressive at all,really."This conclusion is not news to Justin Muir,the owner of a fish tank business."More volume of water is always better.It keeps the fish healthier,and the tank is more stable."
41.We can conclude from the study thatC.
A.The fish in small rivers are more likely to fight than those in larger ones.
B.If you keep fish in tanks of less than 10 gallons,you'll be put into prison.
C.People haven't paid enough attention to the feeling of fish in smaller tanks.
D.The fish in the wild are more likely to fight than those kept in tanks.
42.The underline word"aggressive"probably meansB.
A.polite
B.violent
C.enthusiastic
D.frightened
43.How was the first experiment performed?A
A.By putting more and more fish in the same tank.
B.By putting fish in tanks of different sizes.
C.By putting some food to test the behavior of fish.
D.By putting fish in a tank with plants and rocks.
44.The two experiments prove thatD.
A.food competition results in the aggressive behavior of fish
B.fish become more aggressive as more fish are put into a tank
C.crowding is the main cause of the aggressive behavior of fish
D.fish become less aggressive when placed in a 100-gallon tank
45.The best title for this passage might beB.
A.Animals'Right to Live at Ease
B.Picture of Relaxation Only if You're Not Inside
C.How to Keep Tropical Fish as Pets
D.How to Deal with Fish's Aggressive Behavior.
分析 本文叙述了热带鱼的生活习性.当它们的生活空间越小时,它们的侵略性就越强;反之,如果生活空间越大,侵略性越小.
解答 41.C 推理判断题.由第二段和第三段内容可知,人们大多把鱼养在小的鱼缸里,故选C项.A项中讲的是河流,而全文讲的是鱼缸故A项错误,由第三段第一句可知B项错误;由全文特别是最后一段可知D项错误.
42.B 词义猜测题.根据 those kept in such small tanks were more aggressive than those in larger ones and were more likely to fight.在小的鱼缸里更容易发生打斗,结合选项说明aggressive是具有暴力性的意思,故选择B.
43.A 细节理解题.由第四段第二句In one,Dr.Oldfield tested the effects of overcrowding by keeping tank size constant(不变)while increasing the number of fish.可知他放了很多的鱼在同一个鱼缸里,故选A.
44.D 推理判断题.由倒数第二段最后一句While aggression seemed to remain constant regardless of the number of fish in a tank,it dropped off considerably once the fish were placed in a l00-gallon tank with several plants and rocks to form shelters.可知,如果把鱼放在100加仑的鱼缸里,它们会停止攻击,故选D项.A项太片面;由倒数第二段最后一句可排除B、C两项,因此正确选项为D.
45.B 主旨大意题.由短文内容可知,作者主要告诉我们鱼缸的大小决定鱼生活得是否舒适、侵略性的大小,故选B项.
点评 本文是历史文化类阅读理解.做这类题材阅读理解时要求考生对文章通读一遍,做题时结合原文和题目有针对性的找出相关语句进行仔细分析,结合选项选出正确答案.推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案,切忌胡乱猜测,一定要做到有理有据.

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C. | raises,dealt with | D. | arises,to deal with |
A. | attempt | B. | adapt | C. | adopt | D. | possess |
For this group,working together to help the homeless makes their relation(45)B.They feel like part of each other's lives in a (46)Dway.
It may sound no wonder until you try it,but doing something of charity can really help you (47)Cbetter about giving.That's because it benefits the(48)Aas well as the receiver-you're left with a feeling of belonging and being connected.(49)Dto help an organization or group that fits with your(50)Band the things you believe in.If you love children,buy a present for a child in need.(51)Aanimals are your thing,talk to your local animal shelters-many distribute pet food to low-income pet(52)Dover the holidays.If you(53)C your grandparents and would like to spend time with the elderly,(54)Bout at a nursing home over the holidays.Or share a special skill.If you're good with your (55)C,you can help build or paint housing for people in need.
You don't have to wait for chance to help.By using whatever you have,you can make the world a better place to live in.
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