历年托福考试语法真题全面解析66

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6.Amplifiers such as those in computers and sound –reproducing systems are responsible for --- an erratic input signal.
(A) strengthening
" s2 c* t& V) y3 s5 O(B) being strengthened
& J3 H/ t; Z( x% H" b$ o(C) strengthen
(D) to strengthen
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答案：A
' `  i  w) u0 k9 k$ F% d0 k测试点；介词宾语。
0 U3 \8 q0 A. E9 t分析：介词for后应接名词性成份。(A)strengthening是动名词，可作介词宾语。(B)是其被动形式，与句意不合；(C)(D)为动词形式.
  
$ X1 e$ e3 g, H9 b( j1 \, k7.--- John Aaron Lewis pioneered in the development of “third stream music,”a blend of jazz and classical music.
" b1 ]2 |. G8 h, a' |(A) A composer, who was
(B) He was a composer
(C) As a composer
4 y( t  y" x9 u! ~" n) k, W6 u& Y(D) When a composer he
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& C' ]. A  _2 p7 }7 c7 D- A答案：C
# z( z# d' A- R& r7 Q2 r测试点：状语.
) w; W" v3 Y5 F! F& _! t  l分析：空格后为一完整的句子，而主语是一人名，所缺通常是一个说明此人身份的短语，同位语或状语．故选(C)是介词短语，可作状语．(A)、(D)均含有从句成份，使句意不通；(B)是一单句，与空格后的部分无法衔接.
  
8.In reorganizing the curriculum of Mt. Holyoke College in the late 1800’s Elizabeth Mead laid the foundation --- the modern college rests.
(A) is which
(B) on which
4 E" I0 t' ?9 D(C) which is on
(D) on it
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答案：B
测试点：介语+which结构。
分析：名词foundation后为其定语从句，从句主、谓俱全，所缺为表示地点或范围、方面的状语应选择介词+which的结构，即(B).
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9.Research into the dynamics of storms is directed toward improving the ability to predict these events --- to minimize damage and avoid loss of life.
(A) and thus
(B) so
+ r* ~1 M# P. S; z3 e$ j7 C(C) however
(D) because
' Q3 d$ d3 V% D8 q& A( b6 d* I  
答案：A
测试点：连词并列结构.
; x9 B- w8 x! h7 z; U分析：名词ability后面有两个并列的不定式短语． predict和to minimize…，应当用连词and连接．thus是副词，意为“因此，从而”，and thus常常连用．(B)so是错误搭配，正确用法是so as to.
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% m! e1 d, l" [9 V6 r$ \* t10. --- lived on the North Saskatchewan River long before the Hudson’s Bay Company built a fur trading post there.
4 b+ \5 q& c  C" e5 w) \5 Y(A) Cree people
(B) For Cree people
(C) It was Cree people
(D) Where Cree people
  
答案：A
9 o5 g  q# s: W' z& J测试点；主语。
3 D2 M& y; ^4 m8 u分析：句子有谓语而无主语，应在答案中选择名词或名词词组。(A)是名词词组；可作主语．(B)多了介词；(C)是形式主语结构，与后文不符；D)为从句形式.