在GRE数学考试中,一般都假定以下信息为真:
All numbers used are real numbers;
All figures lie on a plane unless otherwise indicated;
All angle measures are positive;
All lines shown as straight are straight. On the computer-based test, lines that appearjagged can also be assumed to be straight :
Figures are intended to provide useful information for answering the questions. However,except where a figure is accompanied by aNote stating that the figure is drawn tO scale, solve the problem using your knowledge of mathematics, not by visual measurement or estimation.
细心的读者会发现,上述假设实际上就是ETS 出题原则,即:
所有的数都是实数;
除非题目中专门指出假设所有图形都在同一个平面内
;
所有的角的测量值都是正数;
所有显示为直线的线均可当作直线来处理;
伴随问题的图形将为解题提供有用的信息。但是,只有在问题中指出本图形是按比例画出时,才可以用目测或估计而得到的信息去解题。否则,只能运用你的数学知识去回答问题。这一解题原则可以简称为只能读图,不能度量的原则。
体坛英语资讯:Joness agent suspended by US governing body
体坛英语资讯:Open finals: Tsonga dazzles, Shara, Ivanovic meet
体坛英语资讯:Top skiers to miss National Games after sponsorship battle
体坛英语资讯:USA, France and Argentina cruise into Davis Cup last 8
体坛英语资讯:Sprinter Gay, swimmer Hoff win top US honours
体坛英语资讯:Mourning career likely over after knee injury
体坛英语资讯:Ronaldos season over - report
体坛英语资讯:Davenport stung by one-sided Cup loss
体坛英语资讯:Vultures circling over Federer
体坛英语资讯:Hurdler Liu to skip Golden League for Games
体坛英语资讯:Gatlin hires Landis lawyer to fight ban
体坛英语资讯:Bayi loses do-or-die Game 4 to exit CBA play-offs
体坛英语资讯:Capello warns Beckham not to expect any favours
体坛英语资讯:Li Na wins as Peng Shuai crashes
体坛英语资讯:No problems after Ronaldo operation - surgeon
体坛英语资讯:Trail Blazers hand 12th defeat to slumping Heat
体坛英语资讯:Embattled Chinese womens coach tries to keep grip
体坛英语资讯:Government cooperation needed in doping fight
体坛英语资讯:Generous Spurs hand Arsenal early Christmas gift
体坛英语资讯:Chinas EAFC title hopes dashed after losing to Japan 1-0
体坛英语资讯:Sun hopes to shine again in doubles
体坛英语资讯:Kobe, Gasol spark Lakers past Magic
体坛英语资讯:Figure skating pairs eager for first Olympic gold
体坛英语资讯:Djokovic tames Tsonga, Sun crowned with Serbian partner
体坛英语资讯:Phoenix acquire ONeal from Miami
体坛英语资讯:Wariner beaten by Australian Batman
体坛英语资讯:Wenger signals that Lehmann can leave for right offer
体坛英语资讯:Injured volleyball aces return for Olympic training session
体坛英语资讯:Maradona wants to coach Argentine Olympic team
体坛英语资讯:Tennis ace Peng ready for prime time
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |