</p>Whichofthefollowing,iftrue,mostseriouslyweakenstheargumentabove?
) o2 { A G0 a" w(A)Itisimpossibletomeasurewithaccuracythequantityofozone-destroyingchemicalsthatexistascoolantsinrefrigerators.
- F! M5 G d1 I' w! {- q(B)Inmodernsocieties,refrigerationoffoodisnecessarytopreventunhealthyandpotentiallylife-threateningconditions.( \/ K0 h* M" s( l# k
(C)Replacementchemicalsthatwillnotdestroyozonehavenotyetbeendevelopedandwouldbemoreexpens ivethanthechemicalsnowusedascoolantsinrefrigerators.. Q B& P! v$ ]; r1 L$ c
(D)Evenifpeopleshouldgiveuptheuseofrefrigeration,thecoolantsalreadyinexistingrefrigeratorsareathrea ttoatmosphericozone.
, k! X% ]7 ]% D: j" c0 \(E)Thecoolantsinrefrigeratorcanbefullyrecoveredattheendoftheusefullifeoftherefrigeratorsandreused.9 u- S" I. g4 j3 u: [2 R( G
Question11——15) ~( w0 S8 J2 \5 a
Agovernmentisassigningeachofsixembassyofficeworkers——Farr,Golden,Hayakawa,Inserra,Jones,andKovacs——toembassies.Therearefourembassies.EmbassiesLandMarelocatedincountrieswithdryclimates,wher easembassiesPandTarelocatedincountrieswithhumidclimates.Theofficeworkersmustbeassignedac cordingtothefollowingrules:$ o4 }. [* @ U5 Z% w- {: i+ s
Eachembassymusthaveatleastoneoftheworkersassignedtoit.Atleastoneembassyinahumidclimatem usthaveatleasttwoworkersassigned
2 s8 E0 _8 f, U$ f) Z- Stoit.GoldencannotbeassignedtothesameembassyasKovacs.Inserramustbeassignedtanembassyina dryclimates.Jonesmustbeassignedtoanembassyinahumidclimate.11.Whichofthefollowingisanaccep tableassignmentoftheworkerstotheembassies?
- j. Q! v% N Q M# X0 ~+ fLMPT(A)Farr,GoldenInserra,KovacsHayakawaJones; U, [ }) h9 B+ b! x
(B)Golden,KovacsInserraJonesFarr,Hayakawa$ L/ o& U/ K2 e# n, ~' c- W# L
(C)GoldenFarr,InserraKovacsJones,Hayakawa6 O. x/ Y# ^! h( C; G9 \; C
(D)JonesGolden,InserraHayakawaFarr,Kovacs* K4 a8 I# _" p' J0 ]
(E)KovacsFarr,HayakawaInserraGolden,Jones; t& Z! i9 N3 a9 ]* ]2 U
12.WhichofthefollowingmustbeassignedeithertoembassyLortoembassyM?
- ^( w+ `7 K, T" w4 l9 w, \(A)Farr- o; w5 g. l0 x# ]! h/ U0 E- e# i
(B)Golden
, V% z# `, B1 Q& G(C)Hayakawa
. }6 A( ?' D/ v# q(D)Inserra- l# j8 v9 X) D# Z
(E)Kovacs
7 \4 m4 O7 }" u) q7 b5 |13.WhichofthefollowingCANNOTbetrue?
0 ~' Z# [% v( Z* C; p0 V(A)OneworkerisassignedtoL.
5 c/ ~( \" L% R5 C; c* @8 _9 N(B)TwoworkersisassignedtoP.
5 B! A3 C% Y$ I2 }. u- `(C)TwoworkersareassignedtoL.$ f& ]2 q0 l8 x: q; z e4 q7 K, \
(D)ThreeworkersareassignedtoM.
' \, [+ ]: E$ e6 P! T1 F3 G* O% t, a(E)ThreeworkersareassignedtoT.
2 a2 k0 i I3 G9 {7 G. H9 t- [0 t14.IfGoldenandKovacsareassignedtoLandM,respectively,whichofthefollowingmustbetrue?
- I0 M( [6 |% t/ Z" l0 ](A)FarrisassignedtoeitherPorT.* L$ K2 n) l+ J" J/ t
(B)InserraisassignedtoeitherPorT., s7 x( d, B( r0 H2 P
(C)PandTeachhavetwoworkersassignedtothem.# b, v l. D& K9 U% c; k' Y
(D)HayakawaisassignedtoL.
3 ~* j, t2 q) k7 f# Q. D(E)HayakawaisassignedtoT.& @7 T3 A, k6 `) m
15.IfGolden,Hayakawa,andKovacsareamongtheworkersassignedtoembassiesinhumidclimayes,whichofthefollowingmustbetrue?. o3 D2 S: L9 z" x( Z8 ?+ z
(A)Farrisassignedtoanembassytowhichnoneoftheotherfiveofficeworkersisassigned.
$ I: } t1 e; ~! G) c' `(B)Goldenisassignedtoanembassytowhichnoneoftheotherfiveofficeworkersisassigned.
- G" \8 o' Z/ @8 Z% b* {(C)JonesisassignedtothesameembassyasGolden.
V3 z1 D' T0 z& z1 c(D)HayakawaisassignedtothesameembassyasGolden.+ k9 p; q( x1 g |4 I6 S; F- E
(E)HayakawaisassignedtothesameembassyasKovacs.# E% j' e: P& Q( `. n
Question16——19
( Q; y( s$ s5 P& D9 B, ?- g, tAvolunteerusesatrucktopickupdonationsofunsoldfoodandclothingfromstoresandtodeliverthemtoloc ationswheretheycanbedistributed.Hedrivesonlyalongacertainnetworkofroads.6 T T$ o3 V# l: @+ C" u
Inthenetworktherearetwo-wayroadsconnectingeachofthefollowingpairsofpoints:1with2,1with3,1with5,2with6,3with7,5with6,and 6with7.Therearealsoone-wayroadsgoingfrom2to4,from3to2,andfrom4to3.Therearenootherroadsinthenetwork,andtheroadsint henetworkdonotintersect.; P* j. D1 s* q6 U
Tomakeatripinvolvingpickupsanddeliverirs,thevolunteeralwaystakesaroutethatforthewholetrippasse sthroughthefewestofthepoints1through7,countingapointtwiceifthevolunteerpassesthroughittwice.7 Q* _# t c) I4 q
Thevolunteer‘shomeisatpoint3.Donationscanbepickedupatasupermarketatpoint1,aclothingstoreatpoint5,andabak eryatpoint4.Deliveriescanbemadeasneededtoatutoringcenteratpoint2,adistributioncenteratpoint6,a ndashelteratpoint7.
3 t; n% I+ A* r6 e% O16.Ifthevolunteerstartsatthesupermarketandnextistogototheshelter,thefirstintermediatepointhisrpute passesthroughmustbe. z0 d1 p* J' s6 V
(A)2
( T$ t# T6 h; a1 K( @" v(B)31 W2 M, B g. u5 H1 E+ u
(C)5# B2 w3 t( q/ j
(D)6
* {% [* E7 o; l' O; Z# \(E)7
, O& o8 r0 W$ a' X) G17.If,startingfromhome,thevolunteernextistomakepickupsfortheshelteratthesupermarketandthebake ry(ineitherorder),thefirsttwointermediatepointsonhisroute,beginningwiththefirst,mustbe4 b3 R6 z! Y5 b/ S, C
(A)1and22 S4 }' r+ @' {' Y
(B)1and3: T/ g* B- p7 y0 e {
(C)2and18 R2 v+ Q2 v& E
(D)2and4, @, Q0 V; @ E$ y3 ?$ l k6 M
(E)4and23 X9 y. v! h3 P3 p& T. c9 D
9 S3 T" a: d: `% H- u0 M. r' e
18.If,startingfromtheclothingstore,thevolunteernextistopickupbreadateitherthesupermarketorthebak ery(whicheverstopmakeshisroutegothroughthefewestofthepoints)andthenistogototheshelter,thefirsttwopointshereachesaftertheclothingstore,beginningwiththefirst,m ustbe |