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 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, _ 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 understand how hierarchical societies remain stable. The research has proved the fact that voluntary dieting is a habit far from exclusive to humans."As yet,we... When a goby grows to within 5-10% of the size of its larger competitor,it   _  . A) leaves the group itself B) has breeding rights C) eats its competitor D) faces danger
D

A San Diego boy Kristoffer Von Hassel has the gaming world' s attention after he exposed a security weakness that let him log into his dad's Xbox Live account, without permission.      Kristoffer's father, Robert, noticed soon after Christmas that his son was logging into his account and playing games that weren't appropriate for his age. When he asked how, Kristoffer showed him a hack that seems simple but is fairly impressive considering a 5-year- old found it.       Kristoffer would go to his dad's account and type in an incorrect password. That would take him to a password verifications   screen, where he would simply tap the space bar repeatedly and then press "enter. "      "How awesome is that?" asked Davies, who works in online security himself. "just being 5 years old and being able to find a vulnerability I ty and getting attached to that I thought that was pretty cool." He told KGTV that Kristoffer has figured out three or four other "hacks",  including getting past the lock on a smartphone by holding down the "home" key for long enough.      Davies reported the vulnerability to Microsoft. And Microsoft acted, issuing a fix for it. "We' re always listening to our customers and thank them for bringing issues to our attention," the company said in a written statement. "We take security seriously at Xbox and fixed the issue as soon as we learned about it. " The company has even included Kristoffer's name on a list of security researchers who have helped make online Microsoft products safer. For his discovery, or more accurately, for reporting it with his father's help, Kristoffer will receive four games.  $50 and a year's subseription to Xbox Live from Microsoft. Why did a San Diego boy attract the gaming world's attention? A) He is a security researcher. B) He designed a new software. C) He is addicted to playing games. D) He got past the lock of a game.
D

Homework and stress are rarely reduced inside the classroom.Meanwhile,outside the classroom,the pressure is on to find scholarships for college. According to Braintrack,a higher education database with worldwide reach,more than 3 billion US dollars (18 billion yuan) in private scholarships are awarded to college students annually.Average awards range from $2,000 to $3,000. The scholarship application process is similar to the college application process: forms to be completed,test scores and transcripts to be sent,essays to be written and often interviews to be prepared for. A few great places to start looking for scholarships are: www.fastweb. com,www.Finaid. org and www.collegexpress.com.Check out the annual scholarship guidebooks Scholarships,Grants & Prizes by Peterson's and the Ultimate Scholarship Book: Billions of Dollars in Scholarships,Grants and Prizes by Gen Tanabe and Kelly Tanabe. Be selective.Thoroughly research the qualifications required by each of the scholarships.Don't waste your time applying for those that are need      based if you can't produce the appropriate documents. Research past recipients  .Check out the websites of the organizations sponsoring the scholarships.Many post the biographies of past recipients.You don't need to have cured cancer,but if you don't think your resume   measures up to the past winners',you might be better served by moving onto the next scholarship on your list.Prepare for the interview. You'll want to dazzle them with your personality,but above all you'll want to be prepareD. Find someone you trust to conduct a similar interview with you - someone who will be honest with you and provide valuable suggestions. Let your personality shine through in your essays.The essays are the best way for students to share who they are,where they've come from,what they've overcome and so on.Tell your story in an interesting and persuasive  way.And if you do have an interview,send a thank      you note afterward. By Lee Bierer If you want to learn about past recipients of a scholarship,you can use   _  . A) www.collegexpress.com B) the annual scholarship guidebooks published by Peterson's C) the websites of the organizations sponsoring the scholarships D) The Ultimate Scholarship Book: Billions of Dollars in Scholarships,Grants and Prizes

C