As for how much of IQ comes from the genes and how much come from experiences,______. A．scientists have reached an agreement B．scientists' opinions vary C．no genes have ever been identified D．scientists have found many smart genes
A. A．scientists B.scientists' C.no D.scientists
【参考答案】
B 主旨题。题意为：'关于天才在多大程度上来源于基因，在多大程度上来源于后天的培养，________'。本题考查......