Critical Reading > Sentence Completions

　　Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.

　　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

　　正确答案：D

　　Explanation

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

编辑：张雨

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