most of us considered solving the problem as soon as possible, he considered it of no importance．
A. When
B. While
C. If
D. As
网友回答
A. When
(答案→)B. While
C. If
D. As
解析：连词词义辨析。A．When 当…时候 B．While 虽然 C．If 如果 D．As 虽然 虽然大多数人认为尽快解决问题但是他认为问题不重要。根据语境需要“虽然”含义，排除A、C选项但是D选项需倒装语序所以只有B正确。