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.
(A) A
  \! |/ ]" B7 m# f(B) It is a
5 n  m' Y$ ^" s4 x& W(C) Although a
(D) There is a
, S, x; }/ M2 P+ w$ r$ b+ E0 K# G) O  
/ }0 ]/ c2 Y( w答案：A
: x* [  \, R4 Q* g, S, O测试点：冠词.
分析：ratchet (棘轮机构)是名词，名词前应加冠词，故选(A).
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2. Thomas Jefferson’s achievements as an architect rival his contributions ---a politician.
# B7 ?) z% s& m. Q- T# z( m2 C2 e# C(A) such
(B) more
  ^! f% s, K4 E2 R% s# u(C) as
7 _# A+ A5 Z$ J* S0 s) N# v+ L(D) than
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答案：C
4 x8 F4 I" B( b  A& E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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/ A, ?- P: q9 O  @, h3. The chief foods eaten in any country depend largely on ---best in its climate and soil.
& ?* p! i/ T% T4 H# o2 S. \(A) it grows
(B) what grows
4 }0 Y/ K/ b5 R( W(C) does it grow
(D) what does it grow
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答案：B
# I/ R- [2 K) ^( R- U测试点：what引导的名词从句。
+ F7 z/ j0 ]/ U2 R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.
  
4. Possibly the greatest advance in ---materials came with the invention of a cheap way to make steel.
8 x: C1 N2 E# r; ?(A) bridge-building
9 m/ v3 w6 V* E1 Y# O(B) building of bridges
(C) building a bridge
' h- T& ]6 m7 M8 D8 j2 |( f1 v(D) bridges are built
  
) N/ [6 t" y/ ]" R1 w答案：A
测试点：定语.
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.
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5. ---, snakes frequently subdue their prey without injecting poison.
(A) Contrary to general belief
# N: ]$ u* ?$ T* U" p/ ?(B) General belief contrary to
6 b" y4 O$ E( `, e' q# T: _; @& r(C) Belief contrary to general
1 Q7 i, i$ @" L2 F7 h# }(D) Contrary belief general to
  
答案：A
测试点：习语.
分析：contrary to+名词是．固定短语，表示“与……相反”，故选(A).