题目内容:
WhatdoestheSentence“thepictureiscomplex”(Line3,Paragraph4)mean?
A.Researchersdifferinviewsonthecureofillnesses. B.ThehumanbodyisstillbeyondOurunderstanding.
C.Doctorsareunabletohandlecancerseffectively.
D.Variousfactorsfunctioninthetreatmentofcancers.
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答案解析: