A.It is a precious experience．
B.It can be the approach to a job．
C.It can enrich work experiences．
D.It is the perfect solution．

More health care may lead to undesirable medical results because receiving treatment in hospital itself involves risks like unpredictable complications.

A.

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支气管哮喘患者急性发作时应取的体位是（）

A.端坐位
B.俯卧位
C.仰卧位
D.膝胸位
E.头低脚高位

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