SAT语法练习题（十七）含答案及解析

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81. In 1973 mortgage payments represented twenty-one percent of an average thirty-year-old male's income;and forty-four percent in 1984.

(A) income; and forty-four percent in 1984

(B) income; in 1984 the figure was forty-four percent

(C) income, and in 1984 forty-four percent

(D) income, forty-four percent in 1984 was the figure

(E) income that rose to forty-four percent in 1984

82. In contrast to large steel plants that take iron ore through all the steps needed to produce several different kinds of steel, processing steel scrap into a specialized group of products has enabled small mills to put capital into new technology and remain economically viable.

(A) processing steel scrap into a specialized group of products has enabled small mills to put capital into new technology and remain

(B) processing steel scrap into a specialized group of products has enabled small mills to put capital into new technology, remaining

(C) the processing of steel scrap into a specialized group of products has enabled small mills to put capital into new technology, remaining

(D) small mills, by processing steel scrap into a specialized group of products, have been able to put

capital into new technology and remain

(E) small mills, by processing steel scrap into a specialized group of products, have been able to put

capital into new technology and remained

83. Any medical test will sometimes fail to detect a condition when it is present and indicate that there is one when it is not.

(A) a condition when it is present and indicate that there is one

(B) when a condition is present and indicate that there is one

(C) a condition when it is present and indicate that it is present

(D) when a condition is present and indicate its presence

(E) the presence of a condition when it is there and indicate its presence

84. One legacy of Madison Avenue's recent campaign to appeal to people fifty years old and over is the

realization that as a person ages. their concerns change as well.

(A) the realization that as a person ages, their

(B) the realization that as people age, their

(C) to realize that when a person ages, his or her

(D) to realize that when people age, their

(E) realizing that as people age, their

85. Out of America's fascination with all things antique have grown a market for bygone styles of furniture and fixtures that are bringing back the chaise lounge, the overstuffed sofa, and the claw-footed bathtub.

(A) things antique have grown a market for bygone styles of furniture and fixtures that are bringing

(B) things antique has grown a market for bygone styles of furniture and fixtures that is bringing

(C) things that are antiques has grown a market for bygone styles of furniture and fixtures that bring

(D) antique things have grown a market for bygone styles of furniture and fixtures that are bringing

(E) antique things has grown a market for bygone styles of furniture and fixtures that bring