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
参考答案:
答案解析: