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.  
  
/ E( O: X" p% V, @答案：B
% r9 h1 z; S0 ]- O+ F# ]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。
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17. Social reformer Florence Kelly played a role in the 1893 decision of the Illinois legislature to prohibition child labor.
  
答案：D
6 Y$ |- `( w% T8 D测试点；词性.
" g. w+ y7 h1 b, ]分析：prohibition为名词此处应用动词prohibit.
0 S6 U$ q! F4 X4 u+ ]. q; ]; x) G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.
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$ q2 }0 G# F& e18. The term “technology” refers to the discoveries and inventions that help people improve its way of life.
  
答案：D
# t8 v, V7 ?  u8 h: u: o" ?9 N测试点：代词数的一致.
分析：此处代词指代people，是复数意义，应用复数的their.
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19. Brooklyn, New York, had a population of about 23,000 when it becomes a city in 1834.  
  
* \/ N% l5 Q& p答案：C
测试点：时态.
# o/ O9 ]4 H7 Q( K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.
: \. a1 d: v& X' f, Z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。
  
20. 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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6 ?# O4 H* T7 o1 X7 y0 h7 k( U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.