历年托福考试语法真题全面解析63
31. For centuries waterwheels were the only sources of power aside from human and animal strong .答案：D
测试点：词性.
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.
32. Proteins form the most of the structure of the body and also act as enzymes.
答案：A
测试点；冠词。
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。
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.
答案：B
测试点：who和which的用法.
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.
解题要点：关系代词who和which混淆错用是TOEFL常考题型.
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.
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.
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.
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