病历摘要：患者，女性，21岁，2日前食海鲜后次日起咳嗽，喉间痰鸣，伴哮鸣声，气促，不能平卧，咯痰黄稠，烦闷不安，不恶寒，汗出，面赤，口渴喜饮。舌质红，苔黄腻，脉滑数。以往经常有类似发作史十余年。

该病的主要病理因素是什么？（）

A.宿痰伏肺

B.肺气虚弱

C.外邪侵袭，肺失宣降

D.肾虚

E.血虚

F.热壅血瘀

—The skirt still looks pretty on you, ______ it is kind of out of style.

—Thank you. My parents bought it as my tenth birthday present. [ ]

A. because

B. for

C. as

D. though