简介: 问题与情境 一只青蛙在一条直线上从0点开始,第1次向右跳1个单位长度,第2次向左跳2个单位长度,第3次向右跳3个单位长度,第4次向左跳4个单位长度……依此规律跳下去,当它跳动100次落下时,落点在0点的哪边?离0点的距离是多少个单位长度?这只跳蚤一共跳了多少个单位长度?……
简介:It'sbeenoveramonthsincethatfatefuldayofApril1-alsoknownasCollegeDecisionDay.We'veallhadadequatetimefortheelationofacceptancestosimmerdownandforthevoidinourheartscausedbypainfulrejectionstosomewhatcloseup.Butreally--nowthateveryonehasdecidedwherethey'regoingtobespendingthenextfouryearsoftheirlife,hasanythingreallychanged?