新GRE考试的改革，让许多考生们都感觉头疼，但是复习起来如果觉得难的话，不妨练习一下这些经典例题，一定会有所帮助的哦！ , f3 t( }& E$ V; B' D5 B% F+ G5 W+ _
1. The sum of n different positive integers is less than 100. What is the greatest possible value of n?
8 t c4 l" r# z/ r1 S' ` A.10
, B( P2 u0 ^9 b- Z% v B.11 4 O9 J9 `# [7 n4 w: D' D
C.12 中华考试网(www．Examw。com)
: l; o, z3 b/ g& s( N6 m D.13 * ]4 Z+ S4 ^7 }2 y# C4 ^. N; E+ s
E.14
' `5 h; [# S8 J" i j0 R0 a 答案：D 3 I g! L) T- _
2.If p is a prime number greater than 11, and p is the sum of the two prime numbers x and y, then x could be which of the following? 9 c7 f& P' n& g6 K4 r
A.2
2 p; W8 J r) R# s) J6 i; Z' y. g B.5 & e/ B* {* p: }+ t2 c
C.7
! |2 q" U. m! z3 Z$ l A O8 [ D.9
2 `, `; i8 S& w* u: m E.13
" p. U7 W& U% Q 答案:A $ i) z) E/ x& B+ A4 ?( }
3.Of the positive integers that are multiples of 30 and are less than or equal to 360, what fraction are multiples of 12?
2 r' O% e) y+ _' w) z A.1/6
" l# ?- K: c2 a; j: s- Z B.1/5
; h b6 ]5 G9 G/ D C.1/3
+ ] p4 ^- @6 \ D.2/5 9 ?* U# P7 D4 a( k/ S+ v8 `
E.1/2
d3 h* Z- \0 `2 x/ B 答案:E
" g* s6 a6 W" P. G4.If x, y and z are consecutive integers and x 0 Q) ^8 T. M" R) d* M
(1). xyz is even. 1 l8 u8 W8 X) A
(2). x+y+z is even. 3 H+ D8 |. [) r: @, z) ^3 H* g
(3).(x+y)(y+z) is odd. $ g7 h' r4 f& S
A. None i8 g7 e2 k% B, M8 g& I
B.(1) only
* r0 w0 Y0 @5 R C.(2) only + p4 c: _ d+ L! Q0 L
D.(1)and(3)only 考试用书! _8 Q7 d0 @" A7 \0 F* r! G" J+ l
E. (1),(2)and(3)
8 u% ~0 d) t8 X, Q( H5 p 答案：D
! a# I$ T# K. J: {0 W4 n$ j5.The product of two consecutive positive integers cannot be ) ` m' g" e1 L3 @
A. a prime number $ q0 }/ o* W" ~8 C+ f
B. divisible by 11
! `; c, ^% L" D) o+ h C. a multiple of 13
8 `. z Y/ T& I4 N; ] D. an even number less than 10 , m. b, v" u' C! W( K
E. a number having 4 as its units digit. u2 R/ j" M" K/ A
答案：E |
发表于 2012-8-15 12:55:17
