杂交水稻之父袁隆平成功培育出高产杂交水稻的关键是在野生水稻中发现了雄性不育株.这是利用了生物多样性中的( )
A:生物种类的多样性
B:基因的多样性
C:生态系统的多样性
D:生态环境的多样性
A. noodles B. vegetables C. beef D. juice E. apple
Most Brazilians get along well with each other, _________ they are from different races(种族), including Americans, European settlers, and Africans.