question: online shopping:cash
choices.label: A B C D
choices.text: high speed ​​railway:steel internet songs:cd e-government:official documents computer games:software
explanation: "online shopping" uses online banking payment, and "online shopping" does not use "cash". "steel" is the raw material of the "high speed railway". "internet songs" generally refers to songs spread on the internet, and "internet songs" do not require "cds". "e-government" refers to a brand-new management model that comprehensively applies modern information technology, network technology and office automation technology to conduct office, manage and provide public services to society. "e-government" and "official documents" have no obvious logical relationship. install "computer games" through "softwares".
relation: online shopping cash R3.10
relation: high speed ​​railway steel R3.7
relation: internet songs cd R3.10