病历摘要：患者男性，48岁，中学教师。主诉双下肢感觉沉重，酸胀、乏力。检查见双下肢稍肿胀，静脉呈蚯蚓状曲张，皮肤温度正常，无色素沉着、湿疹、溃疡等表现。

护士应如何观察患肢手术后的情况？（）提示：病人在硬外麻下行大隐静脉高位结扎、抽剥术。

A.观察生命体征

B.远端皮肤的温度、色泽

C.足背动脉搏动情况

D.患肢感觉有无异常

E.局部伤口有否感染征象

F.局部肢体活动情况

It was from only a few supplies that she had bought in the village _____ the hostess cooked such a nice dinner. [ ]

A. where

B. that

C. when

D. which