题目内容:
Thebeststatementofthemainideaofthispassageisthat
A.scientistshavefoundawaytoprolongtheperiodofclinicaldeath B.biologicaldeathoccurswhenvitalorganshavesufferedpermanentdamage
C.modernscientistsdividetheprocessofdyingintoclinicalandbiologicaldeath
D.coolingdelaystheprocessesleadingtobiologicaldeath
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答案解析: