______ different life today is from ______ it was fifty years ago.

A．What a; what

B．What a; how

C．How; what

D．What; what

在“睢庸工误人最深，如鲧堙洪水，不知五行之道”中，“鲧堙洪水”这一典故的喻义是（）

A.筑堤防水，违背规律

B.水来土堙，只是蛮干

C.拘泥固执，方法简单

D.庸医滥补，越补越坏