21. Mahogany is often considered the finest cabinet wood because they has most of the qualities desired for furniture making.
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, l+ K1 ~* i) ~答案：C
! ]& a; X* {0 m4 O0 v$ ]! v测试点：代词数的一致。 7 s* O+ {/ O- ~
分析：谓语has为单数形式，主语应为相应的单数代词it。 9 f3 T6 H9 Y: m! X; f. ]& O2 |4 b3 T( F& P
解题要点：代词数的错用是TOEFL常考题型．注意划线代词是否与它所指代的名词单复数一致. # ~( A- a) U9 F' g1 R5 N
" p7 p* Y5 N. _5 J- X22. The situation comedy has proved to a remarkably durable commercial television format.
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答案：B * T8 T8 g* ^) L! m) c& p
测试点：习语.
" l0 j8 j0 g! S8 s4 |0 i* [分析：prove+to be+名词是固定结构，此处缺be.
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23. Calcium, the most abundantly mineral in the body works with phosphorus in maintaining bones and teeth. ) j) u/ Q: y' ]; m" _
, A P/ w( ^3 t$ o* G+ W3 S; a+ I答案：A + y* E! e* }. T/ m0 ~: N
测试点：词性. : @; Y% @% b- _" X
分析：副词abundantly不能修饰名词，此处要用形容词abundant。 # P8 b- ^+ `/ {# n4 z, L1 G) H8 e
解题要点：见到划线的-ly结尾的副词，要留意是否是形容词的误用.
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7 J. o5 \6 k9 ]24. Soil science begun with the formulation of the theory of humus in1808. ( O4 S+ Z. P; \
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答案：A - V* c- h( D% O9 }
测试点：不规则动词的词形变化 2 p3 h8 ? G- D1 y7 j
分析：begun是过去分词，不能单独作谓语。应用过去式began。解题要点；划线的不规则动词，要注意其形式变化是否用错．TOEFL中常见的有，begin-began-begun，stand-stood-stood，set-set-set等.
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$ T% f( j* t! P! G! B5 j25. Scholars tend to cite 1831 as the started of the United States abolitionist movement.
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答案：C 测试点：词性。 ; d1 }( B$ W' m( B
分析：started是动词形式，而冠词the后须用名词．应为start. |
发表于 2012-8-14 22:34:35
