关于横结肠的描述,哪项是错误的?()
A.起于结肠右曲
B.主要由中结肠动脉所供应
C.是大网膜的附着处
D.结肠活动度最大的一段
E.被小网膜所悬挂于腹后壁
参考答案:E
Some people would rather ride bicycles as bicycle riding has _______ of the troubles of taking buses.
A.nothing
B.none
C.some
D.neither
按照专业分类,网络资源可分为那几类?