词汇扩充+语法训练exercise2

词汇扩充+语法训练exercise2

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

Here‘s Why:

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