When he picked up a large sum of money by accident, he battled with his _____ whether he should keep it or return it to the owner.

A．consciousness

B．conscience

C．commitment

D．convenience

为了传承民族文化，彰显民族特色，我国增设清明节、端午节等为法定节假日。这些节日早在宋代都有了，那时最受重视的节日是[ ]

A、中秋节

B、元宵节

C、元旦

D、重阳节