To build a modern logistics system，we should work on the（）of its infrastructure，including railways and ports，and promote the integration of resources in the sector.
A.digital transformation
B.new generation of communication technology
C.block-chain technology
D.VR and AR
答案：A
解析：建设现代物流体系，要加强（）铁路、港口等基础设施建设，促进物流资源整合。A．数字化转型 B．新一代通信技术 C．区块链技术 D．VR和AR