下面为大家整理的是2013年9月23日—9月26日的4道SAT阅读完成句子的练习题及答案解析。同学们可以利用周末检测一下自己的学习，查漏补缺。希望对大家有所帮助。

1.In some ancient cultures, colors were considered very powerful; some societies even believed that red objects had ------- effect, restoring good health through their color alone.

(A) an enervating

(B) a callow

(C) a salutary

(D) an agile

(E) a peripheral

2.To believe that social reforms can ------- evil altogether is to forget that evil is a protean creature, forever assuming a new ------- when deprived of an old one.

(A) rejuvenate . . allegiance

(B) eradicate . . shape

(C) mitigate . . providence

(D) sustain . . episode

(E) dissolve . . abstraction

3.A veteran of both stage and screen, Richard Harris brought a certain level of ------- to his roles, lending ------- to each character that he played.

(A) candor . . uncertainty

(B) insouciance . . experience

(C) whimsy . . depth

(D) gravitas . . dignity

(E) animosity . . warmth

4.Barbara McClintock’s systematic examination of corn demonstrated the transposition of genes, a finding that overturned entrenched beliefs and proved that ------- study may produce brilliant insights and ------- change.

(A) haphazard . . radical

(B) inherent . . controversial

(C) improvised . . startling

(D) methodical . . revolutionary

(E) derivative . . gradual

参考答案及解析：

1.The correct answer is C

Explanation

The sentence discusses the belief of “some ancient cultures” that colors were “very powerful.” If “some societies” believed that red objects were capable of “restoring good health” simply because they were red, it makes sense to say that those societies believed that the color red “had a salutary effect,” or could cure ailments and promote health.

2.The correct answer is B

Explanation

The phrase “is to forget” implies that the belief described in the first part of the sentence is misguided or naïve. It makes sense to argue that the assumption that reforms can “eradicate,” or eliminate, all societal evils is overly idealistic because evil is “protean,” or capable of taking on a new “shape.”

3.The correct answer is D

Explanation

A “veteran,” or seasoned, actor should be able to carry himself with “ gravitas,” or seriousness. A serious performer, in turn, is capable of playing a variety of roles with “ dignity,” or a seriousness of manner.

4.The correct answer is D

Explanation

Only “methodical study” and “revolutionary change” match the ideas of “systematic examination” and “overturned entrenched beliefs.”

以上就是4道SAT阅读完成句子练习题及答案。同学们在备考SAT阅读过程中，一定要结合一定的练习题，检测自己的学习成果。