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【单选题】
患者,男性,35岁。因呕血入院诊治,为明确病因,首选A.
血常规检查
B.
大便隐血实验
C.
X线钡餐造影
D.
纤维胃镜检查
E.
腹部B超检查
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反馈参考答案：
举一反三
【单选题】The fireman couldn't go into the room because the door ____ by someone.
A.
locks
B.
was locked
C.
has locked
D.
locked
【简答题】Becoming a fireman is a challenging and competitive job today. A fireman’s main duty is being scheduled according to the fighting and extinguishment(熄灭) of fire which definitely requires being a stron...
【简答题】简述外商投资股份有限公司的设立条件。
【单选题】The fireman couldn’t __________ what the dark thing was through the heavy smoke．
A.
work out
B.
make out
C.
try out
D.
set out
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