regular training in nursing,she could hardly cope with the work at first.
A. Not having received
B. Since receiving
C. Having not received
D. Not received
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(答案→)A. Not having received
B. Since receiving
C. Having not received
D. Not received
解析：考查非谓语动词作状语。Receive和主语she是主谓关系，用doing形式。且receive发生在主句谓语动词之前，用having received，not放在非谓语动词前。选A.