69. During the Renaissance, scholars were uncertain as to the location of Troy, and by the eighteenth century many historians doubted that Troy had ever existed.
(A) doubted that Troy had ever existed
(B) doubt that Troy has ever existed
(C) were in doubt as to the existence of Troy
(D) were doubtful concerning Troy’s existence
(E) had doubts about Troy’s ever existing
答案选A,我想问为什么会是that,我觉得应该用whether啊~
-- by 会员 yaoxiayi (2010/5/22 21:46:50)