question: oracle:e-book
choices.label: A B C D
choices.text: pencil:laser pen beacon tower:communication satellite bow and arrow:missile abacus:computer
explanation: "oracle" has the same function as "electronic paper book" and can be used for reading, and "e-book" is a tool used in daily life. the function of a "pencil" is to write, the function of a "laser pen" is to indicate, and the functions of the "writing brush" and "laser pen" are different. "beacon tower" has the function of transmitting military signals, "communication satellite" has the function of communication, "beacon tower" and "communication satellite" have the same function, but "communication satellite" is not a tool used in daily life. "bow and arrow" is a cold weapon, "missile" is a hot weapon, both "bow and arrow" and "missile" can be used in combat, "missile" is not a tool used in daily life. both "abacus" and "computer" have the function of calculation, and "computer" is a tool used in daily life.
relation: oracle e-book R2.4
relation: beacon tower communication satellite R2.4
relation: abacus computer R2.4