南宋朱熹是理学的集大成者，他的主张和贡献是
①著有《四书章句集注》          ②提出“理气论”
③提出“正君心”                ④提出“致良知”学说

A：Jane，I called you just now, but you didn't pick up．____?

B：I was reading a story called the fox and the crow(《狐狸和乌鸦》)．

A：____?

B：Oh ,it's very educational．

A：____?

B：Of course．One day, the crow got a piece of meat．The fox was very hungry and wanted to eat the meat．Then the fox said hello to the crow．But the crow didn't answer．

A：____ ?

B：Then the fox said the crow had a beautiful voice and asked the crow to sing a song．The crow was very proud(得意的)and wanted to sing．When it opened its mouth，the meat dropped and the fox got it．

A：The crow was really silly．

B：____．The fox wasn't telling the truth．The crow had a terrible singing voice．