培育出杂交水稻的是著名遗传育种专家（　　）

A．弗莱明

B．虎克

C．道尔顿

D．袁隆平

Before he finally sent its copies off to be handed out among members of the committee, he went over it again and made sure that no item of importance was ().

A. checked out

B. crossed out

C. dropped out

D. left out