As many successful businessmen believe courage is as to pioneering work as the intellig

问题补充：

As many successful businessmen believe, courage is as to pioneering work as the intelligence, even more so．

A. accessible

B. essential

C. alternative

D. commercial

答案：

A. accessible

(答案→)B. essential

C. alternative

D. commercial

解析：句意：正如很多成功的商人所认为到那样，勇气和智慧对原创工作而言一样是基本的，甚至比智慧更基础。A. accessible可进入到的、能进入的；B. essential基本到、必要的；C. alternative 供选择的、选择性的；D. commercial商业到、赢利的。由句意可知选B。

考点: 考查形容词的用法。