被称为“杂交水稻之父”的袁隆平，在参观某地文化时说：“___________在中华文明成熟之前，起到了稻作文明的奠基作用。”他参观的地点是[ ]

A．云南省元谋县

B．浙江余姚河姆渡

C．陕西西安半坡

D．山东泰安大汶口

During the process of loading, damages to cargo can be reduced to minimum by（）.

A.shippers who deliver the cargo to the ship on time

B.stevedores who handle the cargo with caution

C.ship's crew members who check the cargo in regular intervals

D.consig ees who take goo care of the cargo