题目内容:
Wecanlearnfromthetextthat______.
A.biotechistheonlysolutiontolackoffood B.biotechisstillveryhardtobeusedbythepoorfarmersinthedevelopingworld
C.biotechismorecrucialtowealthycountriesthandevelopingcountries
D.therisksofbiotechoutweighthebenefits
参考答案:
答案解析: