外汇风险

— You look so young. Haven't you graduated from your university?

— Yes. I _____ in the English department of Yunnan University for four years. [ ]

A. had studied

B. has studied

C. studied

D. was studying

The computer will be capable ______ whether Princeton will have sun or rain one month away.

A．predict

B．to predict

C．of predicting

D．predicting

请结合工作实际，试论贷款新规的协议承诺原则在合同中应当如何体现。

肺的换气是指________与_________之间进行氧气和二氧化碳的交换，这个过程是通过_________来实现的。通过肺的换气，使__________血转变成___________血。

2010年9月30日，国务院确定对贷款购买第二套住房的贷款首付款比例不得低于50％，贷款利率不得低于基准利率的1.1倍；取消第三套及以上住房的贷款。这一举措（）

①必然增加贷款购房人的经济负担

②会遏制房地产开发和投资性购房

③在一定程度上抑制购房需求，遏制房价过快上涨

④对居民投资结构起到一定调节和优化作用

A.①②

B.③④

C.①②③

D.②③④