历年托福考试语法真题全面解析66
6.Amplifiers such as those in computers and sound –reproducing systems are responsible for --- an erratic input signal.(A) strengthening
(B) being strengthened
(C) strengthen
(D) to strengthen
答案：A
测试点；介词宾语。
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.
7.--- John Aaron Lewis pioneered in the development of “third stream music,”a blend of jazz and classical music.
(A) A composer, who was
(B) He was a composer
(C) As a composer
(D) When a composer he
答案：C
测试点：状语.
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
(C) which is on
(D) on it
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).
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
(C) however
(D) because
答案：A
测试点：连词并列结构.
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.
10. --- lived on the North Saskatchewan River long before the Hudson’s Bay Company built a fur trading post there.
(A) Cree people
(B) For Cree people
(C) It was Cree people
(D) Where Cree people
答案：A
测试点；主语。
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.
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