历年托福考试语法真题全面解析33
1. ---ratchet is a wheel or bar that can move in only one direction.(A) A
(B) It is a
(C) Although a
(D) There is a
答案：A
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).
2. Thomas Jefferson’s achievements as an architect rival his contributions ---a politician.
(A) such
(B) more
(C) as
(D) than
答案：C
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.
3. The chief foods eaten in any country depend largely on ---best in its climate and soil.
(A) it grows
(B) what grows
(C) does it grow
(D) what does it grow
答案：B
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.
4. Possibly the greatest advance in ---materials came with the invention of a cheap way to make steel.
(A) bridge-building
(B) building of bridges
(C) building a bridge
(D) bridges are built
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.
5. ---, snakes frequently subdue their prey without injecting poison.
(A) Contrary to general belief
(B) General belief contrary to
(C) Belief contrary to general
(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).
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