The most important river is the River of （）
参考答案：Thames
The place _______ interested me most was the Gnat Wall．
A．in which
B．which
C．where
D．what
下列选项中不是痔形成的因素是
A．无静脉瓣B．直肠上、下静脉丛畸形C．静脉壁薄弱，结缔组织萎缩缺乏支持D．腹压增高E．直肠肛管慢性感染
