381. The simple of these is the carbon dioxide from the respiration of an ant cluster, a chemical that acts pheromone to promote aggregation.; ~8 J. F& S1 b5 q
The word "cluster" is closest in meaning to which of following?
. @' E% L. d0 I+ ?8 V2 M(A) organ7 h- h j- @. J9 I& l( ]
(B) activity0 a- Q9 v, h# U8 ~1 G
(C) group/ _& Y9 P3 c0 w( Q
(D) cycle
7 Y( i( _3 V1 o- n; ]; {
& B A7 ~" R# h/ u8 p* I, l" f; A382. Fire ants also make use of an alarm pheromone to alert workers to an emergency, and their scouts lay down a trail pheromone as a guide during mass migrations.
8 }$ ^* V- B! J [- L& W7 vThe word "alert" is closest in meaning to which of following?. L& ]' C5 \* H* g$ I
(A) allow9 y! }: T1 B0 E) A
(B) transport- X- E {" C) W8 U- @
(C) warn
X1 B# _) e) n# c9 @) Q7 J(D) provide2 f% H5 F/ {! k+ `. H. V
; m: W& Z0 Y! P& [4 s2 t+ ]383. A fire ant queen emits a chemical signal that identifies her to the colony's workers. They respond by scurrying to gather around her. The decomposing corpse of a dead ant also generates a signal, to which workers respond by eliminating the corpse from the nest.
0 h1 i. d) z3 x7 F2 T1 dThe word "scurrying" is closest in meaning to which of following?$ j2 J! h J& c# `9 P4 q Q' F
(A) agreeing
8 Q% u4 `8 P" q2 h% y(B) appearing+ y; O4 M) K% U9 Q
(C) competing& H1 _1 b8 A, b: u
(D) rushing* ?. I e' ]9 B0 M0 n7 ?
5 i% ]' B# |; E f, m$ M384. Rivers also reveal clay along their banks, and erosion on a hillside may make clay easily accessible.4 b$ ~9 R' u% K9 V" G
The word "accessible" is closest in meaning to which of following?- X8 N3 I6 {5 k6 P+ Q# j3 }. ?
(A) buried& R S' F0 j4 f% ] O
(B) improved2 G& ]+ M) A6 I" k
(C) available
E l$ p7 A, \' q! O% e& Q(D) workable1 d9 N1 [4 T0 F6 l# j9 o
# @5 l9 n! o" P4 I2 x385. Variations of clay composition and the temperatures at which they are fired account for the differences in texture and appearance between a china teacup and an earthenware flowerpot.
5 P- }) T8 j, x! NThe phrase "account for" is closest in meaning to which of following?: ]- Q# W8 ]3 O8 V1 b
(A) reduce8 J- S! ^# ~9 h' A! B7 @. W, \
(B) explain. y n P( J# Z7 B! X0 e
(C) combine with+ D7 T$ h; S+ O% v2 O
(D) list all of
~! z9 c/ S- \8 M" [6 e0 c, |+ T/ w3 x2 B+ Q# K! M6 K
381 C. g* o/ Y& q% g* q% v: {; `
382 C, [( W* R; C1 K7 ~
383 D
% D7 p9 L* w6 ?& ^9 h384 C
) b% o9 E0 V2 f; c& U385 B |
发表于 2012-8-14 22:41:43
