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【单选题】
下列哪种疾病会出现中心性发绀（）A.
右心衰竭
B.
法洛四联症
C.
缩窄性心包炎
D.
严重休克
E.
血栓性静脉炎
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【单选题】Mr. White works for a chemical import-export company, but he ______ for this industrial fair, since he is on leave.[1997]
A.
has worked
B.
works
C.
has been working
D.
is working
【简答题】annual version financial entryrefugeepublication detailed full-time click spotHehasastrongsenseofresponsibility,which____inhisdevotiontowork.
【单选题】Mr. White works for a chemicals import and export company, but he has been working for this industrial fair, while he is______ from that company.
A.
on leave
B.
on duty
C.
on patrol
D.
on guard
【简答题】annual version financial entry refugeepublication detailed full-time click spotThe bookshelves were crowded with books and scientific __________.
【简答题】click annual identify confirm refugeerecruit financial competitive spot reflectPlease bring something with you that ____________ your identity.
【简答题】click annual identify confirm refugeerecruit financial competitive spot reflectThe church has ____________ volunteers to help.
【简答题】click annual identify confirm refugeerecruit financial competitive spot reflectThe sun ____________ off the snow-covered mountains.
【简答题】click annual identify confirm refugeerecruit financial competitive spot reflectThousands of ____________ have entered the camps along the borders in recent days.
【简答题】click annual identify confirm refugeerecruit financial competitive spot reflectYou can order anything with a single ____________ on the mouse.
【单选题】Mr.White works in an import and export company,but he_____for this industrial fair,since he is on leave.
A.
has worked
B.
works
C.
has been working
D.
is working
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