历年托福考试语法真题全面解析63

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31. For centuries waterwheels were the only sources of power aside from human and animal strong .
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: _, I8 [( B# h. C答案：D
1 |! C9 z- C& t* R测试点：词性.
6 T/ j5 }+ f7 C0 t& F4 g分析：形容词human与animal修饰的应是名词，而strong是形容词．应为strength.
解题要点：应记牢strong及其名词strength两个词形.
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' w5 x  f7 P, a( N32. Proteins form the most of the structure of the body and also act as enzymes.  
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答案：A
- i* a# p) \, ~% }5 \测试点；冠词。
3 F6 @% U1 `4 j, {( t5 x" F分析：most后接名词或介词，意为“大多数”，不是最高级形式，前面不加冠词。
4 L0 E! f5 o4 x+ o! H解题要点，；most+名词(大多数的)和the most+形／副(最高级)在TOEFL考题中常见混淆用错.
  
33. The attorney general of the United States advises the President on any questions of law who may arise in the conduct of administrative affairs.
  
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) Q+ k1 ~" Q- i1 K0 U测试点：who和which的用法.
" P. A! `$ j# e4 J分析：定语从句中，作主语的关系代词指代先行词law，是物而不是人，不能用who．应为which或that.
/ ]$ C: {/ x' r: g解题要点：关系代词who和which混淆错用是TOEFL常考题型.
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34. Many of the science fiction publications by Ray Bradbury display a desire to rebel against society’s depend on machines.
  
答案：D
测试点：词性.
+ w" y6 I  q. x% \- c分析：名词所有格’s后应接名词，(D)depend应为dependence.
  
35. The age of a geological sample can be estimated from the ratio of radioactive to nonradioactive carbon present in the object is examined.
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答案：D
测试点：缺词／多词。
分析：名词后可接从句或作用相当于从句的分词作定语。此处可看作是定语从句缺主语that/which，或是分词作定语，多了动词is．(C) present (现存的)在此是形容词.