2011年TOEFL词汇模拟题精选系列四十五

会计考友

216. With appropriate banking of the extrafood, the Mandans protected themselves against the disaster of crop failure and accompanying hunger.
4 P" v8 Z2 R: X  X/ c; n/ WThe word "disaster" is closest in meaning to which of following?
(A) control
0 d! @/ L. Z8 E* a; ^; A(B) catastrophe
! M  J2 r0 ?3 G) z0 v+ t(C) avoidance
9 z8 D, m$ I; P+ J0 f# r(D) history
" `( ?/ L! L; u/ s
217. Helium nuclei have also been found to be constituents of cosmic rays that fall on the earth (cosmic "rays" are not really a form of radiation; they consist of rapidly moving particles of numerous different kinds) .
. W' D' l) T# B% E9 \The word "constituents" is closest in meaning to which of following?
, g: T* ]0 ~$ K* b/ [* S. K+ M(A) relatives
9 }. j+ L3 u+ _7 k$ P% L2 e(B) causes
5 l: V& q0 }* D9 N(C) components
9 l/ \) k5 e& X9 X5 C  @(D) targets
. X' ~. q. Y# E4 Z5 U
218. Its relative abundance never seems to vary much. In some places, there may be slightly more of it; in others, slightly less, but the ratio of helium to hydrogen nucleial ways remains about the same.
3 n6 ^2 B$ S' N) I2 c# lThe word "vary" is closest in meaning to which of following?
(A) mean
. J$ j' B7 G5 G: m6 d: X(B) stretch
2 H0 h. W* o: G) ~(C) change
(D) include

% }4 x, y* X2 ]  T. N3 B219. However, the amount of helium that could have been produced in this manner can be calculated, and it turns out to be no more than a few percent.
The word "calculated" is closest in meaning to which of following?
4 j( ~  r; `/ A+ |(A) ignored
, e9 o7 m, e7 N& e% m& G6 U(B) converted
(C) increased
6 B) h$ J1 R% e5 \" B, b(D) determined
1 k- G" d3 ~# e3 \0 Z
220. By the time the universe was a few minutes old, helium production has effectively ceased.
The word "ceased" is closest in meaning to which of following?
(A) extended
5 k$ J* W2 y5 a+ u4 r* s9 l5 n$ P(B) performed
: G' @3 d8 p) |* g) S(C) taken hold
(D) stopped
5 x( |1 Z+ ?, D% D- }8 n# q
216 B
217 C
  ]4 A* J- V& L4 w4 U2 H( g2 x218 C
$ w5 y4 d) ?: ^% c3 F219 D
% g5 L  ?# n, M220 D