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【单选题】
病人，男，60岁 进行性黄疸2个月。诊断为胰头癌，行胰十二指肠切除术，术后第5天突然出现全腹剧烈疼痛，腹肌紧张腹腔穿刺抽出含胆汁的液体少许。该病人术前必须补充的维生素是A.
维生素A
B.
维生素B
C.
维生素C
D.
维生素D
E.
维生素K
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【单选题】We first met on a train in 2010，but we both felt immediately that we ________ each other for years.
A.
knew
B.
have known
C.
had known
D.
know
【简答题】We inform. you that we have been engaged in this business for the past 25 years. We, therefore, feel that because of our past years' experience, we are well qualified to take care of your interests at...
【单选题】We no longer keep up the close friendship we used to have years ago, ______ we still visit each other occasionally.
A.
since
B.
though
C.
because
D.
For
【单选题】We then moved to Paris in 2001, ________we lived for six years.
A.
when
B.
where
C.
that
D.
there
【单选题】Not once in these years ______ the prices of these products.
A.
we changed
B.
have we changed
C.
did we change
D.
we have changed
【简答题】We could see the house ______ (not clean)for years．
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