问题
选择题
______ the students found the soldier’s idea interesting, the system was too difficult to be of practical use.
A.While
B.Unless
C.As soon as
D.Even if
答案
答案:A
考查状语从句的连词。A尽管;B除非,如果不;C一…就;D即使;句意:尽管学生们认为士兵的想法很有趣,但是这个系统还是太难了而不实用。