文中共有10个错，每句中最多有两处。改错如下：

多一个词，把多余的词用斜线﹨划掉，缺一个词，在缺词处加一个漏字符号∧，在∧下写出正确的词。错一个词，在错的词下划一横线，在横线下写出正确的词。

注意：1.每处错误及其修改均仅限一词。

2.只允许修改10处。多者（从11处起）不计分。

There was a lot of passengers on a city bus. When the bus arrived at a stop, the pretty woman got on the bus. All the passengers kept their eyes fixing on her. An old man near the door attempted to get up, and the woman forced him back into her seat. “Thank you, but please sit down,” she said. “But, madam…” replies the man. “You really needn’t to do that since I’m young,” interrupted the woman. Later, the man tried to rise again but stopped by the woman. Finally the man managed to rise and said angry, “The bus has carried me three blocks beyond my house. I have to get on.”

下肢静脉曲张患者行高位结扎及剥脱术的禁忌证是（）

A．浅静脉瓣膜功能不全

B．交通支瓣膜功能不全

C．深静脉阻塞

D．小腿慢性溃疡

E．小腿色素沉着