A-A+
John .D.Rockefeller ______ owned 90 percent o
问题详情
John .D.Rockefeller,______, owned 90 percent of all American oil refineries.
A．as still a young man
B．while still a young man
C．a young man however
D．in spite of a young man
参考答案
正确答案：B
解析：状语从句。此处应该是一个表示让步语气的状语从句，从句中省了主语和系动词，连接词应选择while。
