Briefly introduce Blake’ s Songs of Innocence and Songs of Exper

Briefly introduce Blake’ s Songs of Innocence and Songs of Experience.
【正确答案】：A.Songs of Innocence is a lovely volume of poems, presenting a happy and innocent world, though not without its evils;
B.Songs of Experience paints a different world, a world of misery, disease, war and repression with melancholy tone;
C.The two books hold the similar subject-matter, but the tone, emphasis and conclusion differ.