question: book:reading
choices.label: A B C D
choices.text: the chinese lute:playing observation:telescope singer:music cup:quench thirst
explanation: "books" are for "reading". "the chinese lute" is for "playing". "telescope" can be used for "observation", and "observation" cannot be used for "telescope". "singer" creates "music", and "singer" cannot be used for "music". the function of the "cup" is not to "quench thirst", but to "hold water".