. As reported in the essay by Prof. Brown, it is only in the most difficult circumstances ________ a...
2023-01-10 08:20:11 44次 山东省2010届高考模拟英语试题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
.
As reported in the essay by Prof. Brown, it
is only in the most difficult circumstances ________ a man’s abilities are
fully tested.
|
A．when
|
B．where
|
C．that
|
D．as
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