感染人体的肠绦虫有多种，其中以人为终宿主的是（）
A.短膜壳绦虫
B.长膜壳绦虫
C.猪肉绦虫
D.牛肉绦虫
E.阔节裂头绦虫
参考答案：A, C, D
病例-对照研究中，能较好地回忆和确定病因因素的病例应首选（）。
A.现患病例
B.新发病例
C.死亡病例
D.重病例
E.轻病例
填空题。
(1) experience____
He would go through fire and water for his country.
(2)look at carefully____
They went through our luggage(行李)at the
customs(海关).
(3)look through____
We spent several days going through all related
materials(相关材料).
(4)pass through____
1 was afraid to go through the forest at night.
