( )30. It was not until the 18th century that man realized that the whole of the brain was involved in the working of the mind, ?
A.was it B.wasn’t it C.did they D.didn’t they
( )30. It was not until the 18th century that man realized that the whole of the brain was involved in the working of the mind, ?
A.was it B.wasn’t it C.did they D.didn’t they
A
略