恶寒发热，头痛，胸膈满闷，脘腹疼痛，恶心呕吐，肠鸣泄泻，舌苔白腻，以及山岚瘴疟，宜选用的方剂是（）。

A.九位羌活汤

B.桂枝汤

C.平胃散

D.藿香正气散

E.八正散

It was the first time in my life _______ I had experienced the UK.

A．when

B．that

C．since

D．who