306. When disturbed, a sea anemone retracts its tentacles and shortens its body so that it resembles a lump on a rock.
7 w& `9 r2 Q$ J5 H& @; KThe word "retracts" is closest in meaning to which of following?
2 l+ t: S! o0 P+ f% H% j7 _& o(A) pulls back9 |% S4 F/ {1 B/ x" X: h8 G
(B) relaxes
1 J% l0 d4 {2 ~1 S" t% j. M(C) reproduces& d6 T, @) ^& B: ]
(D) lifts up) r! f m& g% p5 G& `
. h9 i4 \5 ]: x
307. The first such attempt, the ambitious Project Mohole, got under way during the 1960's and proved the value of deep-sea drilling by making several test holes in the mantle beneath the crust before spiraling costs led to its cancellation.
& y4 x: V% i2 d! R5 j. ]The word "spiraling" is closest in meaning to which of following?' Y/ R$ B& Y5 g; Q4 A8 W/ }
(A) rising
7 U* D" J4 [/ b8 G(B) necessary, [" X5 w- s$ t) o# E" z
(C) unpredictable0 l! C" [+ Z: I- c9 O- E" a* j r
(D) circular
% u5 [( l+ @2 {& W% t/ Z* w/ V( G1 J& n# E- `
308. Soon afterward, however, work began on the more modest Deep Sea Drilling Project, which is not aimed at reaching the mantle but at exploring the crust itself.% Y ^ u/ @' r) p3 E
The expression "more modest " is closest in meaning to which of following?
$ r% W2 _# e6 N f/ I' T+ D2 L(A) more sophisticated. s6 e+ P3 X" g* ]# l; _' W) Y
(B) more timid
* P3 g; v0 b" ]4 `0 l: T3 ~(C) less ambitious5 C" l+ @/ x! d/ v$ \5 m5 I, z
(D) less controversial3 T! }: R) ]4 y9 r
v5 p* k$ k) Q3 w! S" p8 \
309. This venture uses a special ship, the Glomar Challenger, which can be held precisely in position in the sea --- without any anchor --- by sound-wave guiding systems and computer-controlled propellers.
% o+ j: _- Q; M3 s4 @The word " precisely" is closest in meaning to which of following?0 M. \+ d& O$ _- J3 n
(A) exactly
# ^' w* q/ H" N6 v(B) clearly
2 J1 g/ {" a, Y5 v M! q(C) economically
( T0 J$ a, [& ]9 d8 C# O8 T(D) practically3 ]) y* o% X" G d5 ]5 Y
8 s' K6 |* Q1 K! i' b/ M K310. Throughout the colonial period there was a marked shortage of women, which varied with the regions and was always greatest in the frontier areas.
U9 m1 }1 W& Y9 M9 O# OThe word "marked" is closest in meaning to which of following?
& P2 l& w) k- w, y# a4 v; r9 o(A) underlined% I+ u8 }( `% t4 e- @! n/ Q! K
(B) graded
# u- ? ]( ~$ o2 V# F2 G% B, @& w) C(C) prolonged1 B# ~* k+ n |4 ?: _
(D) distinct
6 V0 X; ]3 E0 a4 Y Y2 _9 p3 q' b; w& I. G( h1 @; A
306 A
8 A) n7 s1 Q/ [% g- J" @307 A
6 X# ?" p; G" S: k% H% d308 C9 O3 [' \ L, g( ~
309 A
`, m0 i4 @" @9 c6 l/ X7 {. B310 D |
发表于 2012-8-14 22:41:43
