题目内容:
根据以下资料,回答题。Accordingtothefirstparagraph,whatisthefunctionofbiotech? A.Thegeneticallymodified,pest-resistantcropsmightkillgoodinsectsaswellasbadone
B.Itcanhelpsolvetheproblemofsoilthatcontainslittlealuminu
C.itcouldovercomethechallengeofdistributingfoodindevelopingcountrie
D.Itcanhelppreventthelossofthosecropsbeforetheyareharveste
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答案解析: