历年托福考试语法真题全面解析64

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36. Dams vary in size from small rock barriers to concrete structures many feet height.  
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$ Q" y9 m7 Y+ W5 A9 ^  \答案：D
- u. l& ]; j1 G  L测试点：词性/习语.
% p9 Q' H4 f1 C6 J0 z  c* T, }* m分析：表示长度、重量等单位的名词后接形容词，数词+feet long／high是固定短语，不用名词height.
) ^, ]* a1 l  p* K- c解题要点：表示长、宽、高概念的形容词与其名词形式混淆是TOEFL常考题型．记住下面题型wide-width，long-length，high-height.
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37. Even before the human organism developed into their present stage of home sapiens, the beginnings of culture were already evident.
  
答案：B
1 l& V& g4 G* G4 k  k0 Q8 l测试点；代词数的一致。
. Z+ ~2 E5 [4 i分析：此处代词指代单数的organism，不能用复数的their，应用its。
' [: f* E: K8 a% E# ]8 D3 O0 P解题要点；代词与其所指代的名词单复数不统一是TOEFL常考题型．应特别注意划线的代词.
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! C8 S0 t+ e  q& s% c( L+ b38. In the United States, sleds for recreation were first produced commercial in the 1870’s or thereabouts.
  
! Y  e$ ^3 s' u4 ?3 _) n答案：C
测试点：词性.
, l* b# p) ?3 B: h4 w; k9 Z, F分析：修饰动词produced应用副词，而commercial是形容词．应为commercially.
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39. Employments agencies bring together persons qualified for specific jobs and employers who have those jobs available.  
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答案：A
测试点：名词的数.
分析：名词作定语修饰另一个名词，用其单数形式，不加s．(A)应为Employment.
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40. Salmon spend most of their adult lives in salt water, despite they return to their freshwater birthplaces to spawn and die.
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答案：C
测试点：词性／连词.
分析：连接两个句子要用连词，而despite是介词，应为while或but．(A)是正确的动词形式，因为主语salmon单、复数同形，而且后文their表明它是复数。