历年托福考试语法真题全面解析33

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1. ---ratchet is a wheel or bar that can move in only one direction.
  Z0 A: Q. A) k) R# \; B" ~* y(A) A
3 P$ U0 K. W4 e! q2 `(B) It is a
5 b+ g* R# Z  s& p. ?3 h6 m2 X  z(C) Although a
(D) There is a
  
答案：A
: J" |4 B' C- @) R8 z' d; C测试点：冠词.
$ X; m7 `# Q+ [  I. X$ M' C分析：ratchet (棘轮机构)是名词，名词前应加冠词，故选(A).
  
! A8 N4 Z9 E# I  ~; u1 C2. Thomas Jefferson’s achievements as an architect rival his contributions ---a politician.
+ U* O! @; E; I(A) such
6 t6 j& L0 c, X5 A(B) more
(C) as
% F' p4 q  j, h5 ?2 K4 E# S3 d2 v(D) than
  
0 {/ _/ N: T: C6 ^- K答案：C
, p' U. }8 c# W测试点：介词.
分析：”作为政治家“要说as a politician，故选(C)．前文as an architect可作为线索．动词rival (比得上，相比)在词意上也决定了前后两部分应相同结构.
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' n8 z1 N" U( G3 u3 J, F; L2 W3. The chief foods eaten in any country depend largely on ---best in its climate and soil.
" K* o* x! m7 l" n(A) it grows
8 u. w3 E% r2 e4 D' W( V(B) what grows
(C) does it grow
(D) what does it grow
  
* u6 A' C$ P5 y) O答案：B
4 B) e8 h- a7 t测试点：what引导的名词从句。
分析：depend on后接名词性的成份。答案中(B)是名词从句，做介词on的宾语．(A)是主谓结构但并非名词从句，不能作宾语，(C)是问句形式，(D)结构错误.
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" d" S1 x2 P' g2 J% R4. Possibly the greatest advance in ---materials came with the invention of a cheap way to make steel.
$ O4 s* v9 O* _8 o(A) bridge-building
" G9 |9 X3 z7 Z/ X(B) building of bridges
1 A" {/ k3 F) x4 d9 W9 f; \(C) building a bridge
- @) ~4 f0 Q$ \9 p; B! r( a0 E(D) bridges are built
  
  v! Y/ w+ j% u8 n& O0 {" E4 N答案：A
" o5 E" D) i! j: N- y' v. j测试点：定语.
, D7 L8 h% Y% d) R) t分析：materials是名词，前面要用形容词性的词来修饰它．(A)是分词，可作定语．(B)是动名词短语；(C)是动宾结构；(D)是句子；均不可作定语.
* i& j/ Z% j/ Z  
5. ---, snakes frequently subdue their prey without injecting poison.
* z7 U4 O. ^' _: r0 K; e$ V$ |(A) Contrary to general belief
9 v0 P5 j6 Y5 a: O6 V5 X- s(B) General belief contrary to
(C) Belief contrary to general
(D) Contrary belief general to
* s, s0 b' u$ r9 s; D  
1 E5 K- j( A! x( r! |答案：A
& _. Z) w& T4 P# W6 j$ Q, z, l测试点：习语.
/ w" n1 {' L# t9 H) N+ Q分析：contrary to+名词是．固定短语，表示“与……相反”，故选(A).