以下属于主要水工建筑物的有( )。
A．导流墙
B．挡水大坝
C．电站厂房
D．护岸
E．引水发电隧洞
参考答案：B,C,D
猪肉绦虫特别发达的器官是（ ）
A．生殖器官
B．消化器官
C．呼吸器官
D．感觉器官
It is the teacher ____ taught me when I was a child ____ I am going to visit.
A．that; which
B．who; which
C．who; that
D．whom; that
