In modern society, alternative energies __________ traditional ones are playing an important role in our daily life. That’s just because scientists have made great breakthroughs _________ the development of science and technology.

A．for, during

B．of, during

C．by, in

D．to, in

我国国家外汇管理局公布的外汇牌价，采用（）

A.直接标价法

B.间接标价法

C.美元标价法

D.人民币标价法