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After working for twenty hours without any rest, the doctors were _______.
A、exhausted
B、mounted
C、wrapped
D、restored
【正确答案】：A
【题目解析】：exhausted筋疲力尽的，疲惫不堪的；mounted骑马的；安装好的；裱好的；wrapped有包装的；restored精力充沛的；精力恢复的。句意：连续工作了20个小时没有休息，医生们都筋疲力尽了。