肺包虫的终宿主是（）
A.人群
B.钉螺
C.牛
D.各种牲畜
E.狗
参考答案：E
I have two brothers. ________is a driver, ________is a policeman.[ ]
A. One, one
B. One, other
C. One, the other
D. The one, the one
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