历年托福考试语法真题全面解析52

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16. The unit of measurement known as a “foot” has originally based on the average size of the human foot.  
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答案：B
+ W, S  ~" a: }6 Y  E测试点：习语.
分析：Be based on是固定短语。此处应为was．这个短语在TOEFL考题中以不同形式出现过多次。
5 A, A/ e0 C  n7 k: C  
! B0 o0 p$ x6 E7 X2 B- O9 T" C17. Social reformer Florence Kelly played a role in the 1893 decision of the Illinois legislature to prohibition child labor.
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答案：D
6 f: k- B6 J5 ], r8 k测试点；词性.
0 R. ?7 \4 g2 s3 ?* }, k- g0 X分析：prohibition为名词此处应用动词prohibit.
9 c( m' p! r2 _5 G; ]: D2 D) @解题要点；划线的是以-tion结尾的名词，而前面是to，应考虑它是否错用，是否应为动词.
  
; ~+ e+ h7 o) @' U- O; `18. The term “technology” refers to the discoveries and inventions that help people improve its way of life.
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答案：D
, ?4 c) C. `0 ^! ?; S测试点：代词数的一致.
$ ~6 Z0 I% E$ l0 D% N3 O. Z分析：此处代词指代people，是复数意义，应用复数的their.
  
19. Brooklyn, New York, had a population of about 23,000 when it becomes a city in 1834.  
  
答案：C
* k8 \% G! G8 U' O测试点：时态.
分析：由时间状语1834推知，谓语动词不能用现在时，而应用过去时，即became.
解题要点；考题中有具体数字表示的时间状语时，要留意句子的谓语动词是否应为一般过去时。
  
1 t$ Y6 q1 a* [, `& N$ y20. People can remember more information for higher periods of time when they use more than one sense in the process of learning.
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答案：B
测试点；词意.
分析：higher指高度，而修饰表示时间阶段的periods应用longer.