To succeed in a difficult task ,______________.

A．Persistence is needed

B．Persistence is what you need

C．One needs to be persistent

D．A persistent nature is needed

诸葛亮出山的第一谋是解决了什么？（）

A.火烧新野

B.解决了刘表儿子的家庭纠纷

C.火烧博望坡

D.撮合孙刘两家的联盟