--Have you heard of that? Tom recently bought a new car and an expensive flat.

--________? He even couldn’t have enough money to pay for the rent.

A．How about

B．Why not

C．How come

D．So what

荀子说：“蓬林麻中，不扶自直；白沙在涅，与之俱黑”，反映了 __________ 对人的发展有着重要的影响。