这是挂在岳麓山正门的对联，下联已被拆散且打乱排列顺序，如将拆乱的下联重新组合，则顺序正确的一项是[ ]

上联：学正朱张，一代文风光大麓

下联：a浩气　b黄蔡　c勋高　d震名山　e千秋

注：朱张：朱熹和张栻，宋代理学家。黄蔡：黄兴和蔡锷，革命家。

A．abecd

B．baced

C．cbead

D．eabcd

They wanted to know _______ 1,600 words as soon as possible. [ ]

A. how can they learn　　　　

B. how could they learn 　　

C. how they can learn 　　　　

D. how they could learn