单纯性大隐静脉曲张最佳的治疗方案是（）

A.单纯高位结扎术

B.穿弹力袜

C.结扎功能不全的交通支

D.曲张静脉分段结扎

E.高位结扎+主干剥脱及交通支结扎

22. Careful surveys have showed that audience _______ teachers and students are more likely to take seats _______ directed.

A．1ike; that

B．as; that

C．1ike; as

D．as; like