单选题 What was the matter with you this morning? You looked______you hadn't slept for the last twenty-four hours.

[A] so as
[B] that
[C] as if
[D] like that

【正确答案】 C

【答案解析】[解析] 本题考查look作为连系动词的用法。look(看起来)与as if连用表示“看起来好像…”，其后用虚拟语气。表示过去发生的动作对现在造成的影响(看上去好像一天没睡似的)，本来应该用现在完成时，但在虚拟语气结构中用过去完成时(hadn't slept)。没有look like that的用法。