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【单选题】
关于上消化道出血哪项不正确A.
指REIT韧带以上的消化道出血
B.
最常见的病因是消化性溃疡
C.
呕血均呈棕褐色
D.
多数患者可出现低热
E.
血中尿素氮浓度可增高
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举一反三
【单选题】--- Has your uncle ever been to Tibet ? ---___________________________.
A.
No, he didn't
B.
No, he haven't
C.
No, never
【单选题】Why is Robert not sure of joining the group?
A.
He hasn't practiced for ages.
B.
He doesn't have time to practice.
C.
He isn't interested in joining it.
【单选题】______, he couldn't earn enough to support the family.
A.
Hard as he worked
B.
As he worked hard
C.
As hard he worked
D.
Hard as did he work
【单选题】— My father's just back from work, ? — . He is having a rest in the room. [ ]
A.
hasn't he; Yes, he has.
B.
has he; No, he hasn't.
C.
isn't he; Yes, he is.
D.
Is he; No, he isn't.
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