Chen jianmin,___director of the Chinese Earthquake Research Center,told the media that _____ early warning system for qu
问题描述：
Chen jianmin,___director of the Chinese Earthquake Research Center,told the media that _____ early warning system for quakes was yet to be built in China
不填；an
答
个人觉得第一个空加个a好点吧,director of the Chinese Earthquake Research Center这不是一句完整的话,只是用来修饰Chen jianmin 起说明作用的成份,这个结构也就是一个同位语结构,如果说不加a的话,那么这里的direct...