题目内容
7.People diet to look more attractive.Fish diet to avoid being beaten up,thrown out of their social group,and getting eaten as a result.That is the fascinating conclusion of the latest research into fish behavior by a team of Australian scientists.The research team have discovered that subordinate fish voluntarily diet to avoid challenging their larger competitors."In studying gobies we noticed that only the largest two individuals,a male and female,had breeding (繁殖) rights within the group,"explains Marian Wong."All other group members are nonbreeding females,each being 5-10% smaller than its next largest competitor.We wanted to find out how they maintain this precise size separation."
The reason for the size difference was easy to see.Once a subordinate fish grows to within 5-10% of the size of its larger competitor,it causes a fight which usually ends in the smaller goby being driven away from the group.More often than not,the evicted fish is then eaten up.
It appeared that the smaller fish were keeping themselves small in order to avoid challenging the boss fish.Whether they did so voluntarily,by restraining how much they ate,was not clear.The research team decided to do an experiment.They tried to fatten up some of the subordinate gobies to see what happened.To their surprise,the gobies simply refused the extra food they were offered,clearly preferring to remain small and avoid fights,over having a feast.
The discovery challenges the traditional scientific view of how boss individuals keep their position in a group.Previously it was thought that large individuals simply used their weight and size to threaten their subordinates and take more of the food for themselves,so keeping their competitors small.
While the habits of gobies may seem a little mysterious,Dr.Wong explains that understanding the relationships between boss and subordinate animals is important to understanding how hierarchical (等级的) societies remain stable.
The research has proved the fact that voluntary dieting is a habit far from exclusive to humans."As yet,we lack a complete understanding of how widespread the voluntary reduction of food intake is in nature,"the researchers comment."Data on human dieting suggests that,while humans generally diet to improve health or increase attractiveness,rarely does it improve long-term health and males regularly prefer females that are fatter than the females'own ideal."
65.When a goby grows to within 5-10% of the size of its larger competitor,itA.
A.faces dangerB.has breeding rights
C.eats its competitorD.leaves the group itself
66.The underlined words"the evicted fish"in Paragraph 3refer toD.
A.the fish beaten up B.the fish found out
C.the fish fattened up D.the fish driven away
67、The experiment showed that the smaller fishB.
A.fought over a feast B.went on diet willingly
C.preferred some extra foodD.challenged the boss fish
68.What is the text mainly about?D
A.Fish dieting and human dieting.
B.Dieting and health.
C.Human dieting.
D.Fish dieting.
分析 文章主要讲述鱼的节食.
解答 65:A推断题.由第三段"Once a subordinate fish grows to within 5-10% of the size of its larger competitor,it causes a fight which usually ends in the smaller goby being driven away from the group.More often than not,the evicted fish is then eaten up."可知,如果 goby 长得过小,则很可能被驱逐出群然后被吃掉,所以是危险的,故正确答案为A.
66:D推断题.由上文"Once a subordinate fish grows to within 5-10% of the size of its larger competitor,it causes a fight which usually ends in the smaller goby being driven away from the group."可知长得小的会被驱逐,所以更可能会被吃掉,故正确答案为D.
67:细B节题.由第四段最后一句"To their surprise,the gobies simply refused the extra food they were offered,clearly preferring to remain small and avoid fights,over having a feast."可知,为了保持小的体型,避免战斗,gobies 拒绝接受额外的食物.可见,它们是愿意节食的.故正确答案为B.
68:D主旨题.文章主要讲述鱼的节食,D项符合文意,所以D项正确.A项,文中没有讲人类的节食,所以A项错误.B项,文中没有讲健康,所以B项错误.C项,文章讲的是鱼的节食而不是人类的节食,所以C项错误.故正确答案为D.
点评 本文是科技类阅读理解.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
If we compare professors and students to the host of a university,then the library of a university can be compared to the hallway.The quality of a university,(51)B,is in direct proportion to that of its library.At Harvard,the library is an essential part of everybody's life.Both the quantity and the (52)C of the library make study a pleasant process.
Harvard Library is not only the most ancient library in the United States,but the largest university library with the largest scale.In 1638John Harvard (53)A his whole library to the then Harvard College.After 300years of development,the library now holds 10million books and (54)D more than 100branch libraries.In addition to the libraries owned by each school,there are some branch libraries that are (55)D in some aspects.While most of the branch libraries are on Harvard campus,some are as far as in Washington,D.C.,or even in Florence of Italy.Yenching Library is famous for its (56)A of East Asian literature.Lamont Library is the first library in the world that is(57)C for undergraduates.Widener Library is the largest library in Harvard,only second to Library of Congress.
What(58)D to be mentioned is the system or rather the service of the libraries.Usually the libraries are open from 9a.m.to 5p.m..The main libraries are open until 10p.m..The libraries for undergraduates will even be open all night during the(59)A period.The libraries also provide with students the service of (60)B reading materials for all courses.At the beginning of a semester,each teacher will give a list of books to the librarians.The librarians are (61)D to find out these books and put them at the places where students can easily find them.
There is no limitation for the number of books that students can borrow.As the space for the library is limited,many books are(62)B in suburban library.Despite this,students can go to fetch the book at the (63)A library within 24hours after they submit request for that book.Even if there is only one book to be fetched from the suburban library,the libraries on campus will send someone to do the job.This kind of (64)B which put readers in the first place is rare even in Ivy League.Therefore,study at Harvard will be a(n) (65)D experience.
51.A.as a result | B.to some extent | C.on the contrary | D.at all times |
52.A.influence | B.discipline | C.quality | D.prospect |
53.A.donated | B.assigned | C.adapted | D.distributed |
54.A.contains | B.composes | C.involves | D.includes |
55.A.informative | B.different | C.secure | D.peculiar |
56.A.collections | B.documents | C.phenomena | D.exhibitions |
57.A.unusually | B.formally | C.specially | D.especially |
58.A.remains | B.happens | C.appears | D.deserves |
59.A.examination | B.experiment | C.vacation | D.graduation |
60.A.confirming | B.preparing | C.selecting | D.designing |
61.A.desperate | B.willing | C.reluctant | D.responsible |
62.A.exhibited | B.reserved | C.stored | D.classified |
63.A.appointed | B.accepted | C.expected | D.restricted |
64.A.performance | B.service | C.activity | D.response |
65.A.fortunate | B.creative | C.positive | D.enjoyable |
-But _____ of them are in fashion now.( )
A. | all | B. | both | C. | neither | D. | none |
A. | seldom | B. | ever | C. | never | D. | always |
A. | .Such | B. | This | C. | That | D. | So |
A. | forced | B. | forcing | C. | to be forced | D. | having forced |
There are many"floating markets"in Asia; perhaps the most unusual is in Thailand,at a place called Damnoen Saduak,It's open from six in the morning to the noon every day.People sell fresh fruit on their boats.
Many Belgians say that the Grand Place is the most beautiful square in the world.It is the home of a colorful flower market.It's open every day except Monday.On Monday,instead of flowers,there's a Wonderful bird market!
One of the world's most famous markets is in Mexico-the Sonora Market.You can buy toys,birds and medicine.There are all kinds of things.lt's open every day from early in the morning till late at night.
In England,every weekend,thousands of young people from all over London travel to the Camden Market-it's the place to go for street fashion,CDs and tapes.Many people also go there for fun.
Names | Countries | Features | Things to Sell | Open Time |
The Damnocn Saduak | Thailand | unusual | (76)Fresh fruit | every day |
the Grand Place | Belgium | beautiful | (77)All kinds of flowers/colorful flowers | every day except Monday |
The Sonara Market | Mexico | (78)famous | all kinds of things | every day |
The camden Market | (79)England | fashionable | Fashion things | (80)Every weekend |