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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】患者,女性,25岁。自然分娩1周,突然大量阴道流血,检查发现子宫大而软,宫口松弛,阴道及宫口有血块堵塞,正确的处理措施是
A.
子宫切除
B.
行刮宫术
C.
开腹探查
D.
左侧卧位,吸氧
E.
子宫动脉结扎
【单选题】Defective Genes and Human Health Each of us carries about half a dozen defective(有缺点的) genes. We remain blissfully(快乐地) unaware of this fact unless we, or one of our close relatives, are amongst the m...
A.
Genetically engineered proteins are better than blood products in treating hemophilia.
B.
Only those who suffer from a genetic disease carry about half a dozen defective genes.
C.
The Y chromosome males have are from their fathers.
D.
Whether a defensive gene produces ill effects has something to do with the environment in which the gene operates.