Two families are planning to go on a canoe trip together. The families
v, z( d" }7 a0 p, B" ~% P$ `9 I9 O5 jconsist of the following people:
0 ^3 ]7 l* I7 i7 a5 R2 [+ q8 j Robert and Mary Henderson and their three sons, Tommy, Dan, and William;
4 W$ g$ a' [% G/ C! E7 ? Jerome and Ellen Penick and their two daughters, Kate and Susan. 7 ?1 k, E! H* {% X- J9 Y
* Z2 d* o/ n, T4 w) J3 m% H. uThere will be three canoes, with three people in each canoe. ! q9 u8 [( S- d7 x0 X0 W' ?
At least one of the four parents must be in each canoe. # o$ ?8 D2 [# Q
At least one person from each family must be in each canoe.
* o: i. u$ D" I: A' x. P& B7 uIf the two mothers ride together in the same canoe, and the three brothers & k. w/ G- N. G" ^$ S( p
each ride in a different canoe, which of the following must be true? 5 y: Y) X. v( _ ]* [, L, d+ Q2 F
Each canoe has both only male and females in. 1 ~" I0 p9 \8 i W2 m
One of the canoes has only females in it.
8 v- ~' s8 A0 G& ` One of the canoes has only males in it. . n! u% A! K) H; }) R) e
The sisters ride in the same canoe.
. b& _$ r! S1 V The fathers ride in the same canoe. ' j" h. H8 U! t2 X
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答案：(A) / t5 s; a1 {: p- k \% b: q
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If Ellen and Susan are together in one of the canoes, which of the following , [$ z5 G4 n% m& [
could be a list of the people together in another canoe?
. l& ?/ c9 w, ] Dan, Jerome, Kate % R1 Y( J) m* {( C: ]9 u9 r
Dan, Jerome, William
$ @8 t5 n! F ]0 }4 \* U Dan, Kate, Tommy
8 a' u- X2 a2 U- ^9 C1 ~& } Jerome, Kate, Mary
& N* W$ C0 P% G1 @5 O) m; a( Q Mary, Robert, Tommy
) @. h" Q. c6 U( l9 v0 n& f
6 {- F1 Y& l0 y! o6 N5 s$ R5 T———————————————————————— * o* w: x S4 l0 W/ ^
答案：(B)
; A& B8 e, c! J
O7 H3 g5 i( t) j# q; R* o4 AIf Jerome and Mary are together in one of the canoes, each of the following
& u% ~4 J4 b4 d" u3 `" O8 ~+ Ecould be a list of the people together in another canoe EXCEPT
5 |, v+ l! m8 F% iDan, Ellen, Susan
7 v* }' O8 T8 n, T9 l0 C" w. HEllen, Robert, Tommy
6 r: S$ E+ i3 ] h! T4 G+ u, IEllen, Susan, William
; {/ i8 K& H; c9 B4 DEllen, Tommy, Wiliam # j, V7 G: D9 ?) a) n9 r
Kate, Robert, Susan " C d: q3 o6 w5 s, L& W1 }( T
6 {4 G- W. r( F$ I, C
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I5 s- S8 {, ?3 Q. Y8 T答案：(B) / C; E3 {1 W- t6 P/ g6 r: b/ K4 O
( a2 ]: f! c3 d1 ^/ ^( n; NIf each of the Henderson children rides in a different canoe, which of the
* H/ E. ^5 ^( F3 _2 Q* }following must be true? ' y: A* G' O* E/ j
ⅠThe Penick children do not rode together.
8 w8 |1 w$ N& r5 N+ ] ⅡThe Penick parents do not ride together.
6 `: T6 j7 u! b' ~# q Ⅲ The Henderson parents do not ride together. 2 t! d; G+ Z# Z
Ⅰonly * L6 @2 C/ Q) J4 b- b
Ⅱonly
: p4 }( e& d% K1 gⅠandⅡonly 5 S0 V/ m1 K' v4 ~
Ⅰand Ⅲ only
8 \- v2 W: W4 ^$ OⅠ,Ⅱ, and Ⅲ " r& |* v1 J) o
1 A) w8 O$ t6 {: S7 T( A$ {
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, l0 Z( \7 }) J7 J答案：(D)
$ ~8 l8 n3 {3 E3 [I On one of the days of the trip, while the canoeists go over rapids, Jerome # k+ ~4 k5 [/ ?$ J5 D+ z
chooses to go hiking with two of the children rather than canoeing, and there ! y. ?. n. c0 ?5 y3 y1 y
are six people in the canoes, two in each canoe. If the other conditions still
% S( l% |% }+ Y+ Bhold for the canoeists, which of the following could be a list of the children - |6 Z; e4 h* F% U- U
in the canoes? $ A6 u1 a3 Q" R' O
Dan, Kate, Susan 9 a# Q0 J8 c& O& S% G) Z
Dan, Kate, William
5 }( u2 y N& q4 W% g Dan, Tommy, William
# \: T' z0 R3 b2 W4 b- Q+ j Dan, William. Susan 5 U# R* p7 D3 v+ Z+ b# h
Susan, Tommy, William
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, W* T( l. d$ c( X答案：(A)
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' I' m: F, T$ A7 X) RM, N, O, P, Q, and R are perfectly straight one-way streets. - o2 s' i9 V, l8 @. j1 [" Z
Each street in this group is parallel to two of the other streets in the group, |
发表于 2012-8-15 12:45:20
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