眼球壁的分层从内至外依次为（）
A.巩膜、角膜、视网膜
B.视网膜、血管膜、纤维膜
C.脉络膜、视网膜、角膜
D.纤维膜、血管膜、视网膜
参考答案：B
Was it through Li Ning, ________working at a high school, ________you got to know Wangke?
A．who I think it was; who
B．that I think were; which
C．who I think was; that
D．I think who was; which
物资管理是企业生产经营管理的（），是保证生产发展和提高经济效益的重要环节。
