大米中铁含量极低，科研人员通过基因工程等技术，培育出了铁含量比普通大米高60%的转基因水稻，改良了稻米的营养品质．如图为培育转基因水稻过程示意图．
- What do you think of the woman singer?
- Her voice sounds _______. I like her songs.
