以下动物传染病属于一类动物疫病的是：（）.
A.口蹄疫
B.高致病性猪蓝耳病
C.新城疫
D.布鲁氏菌病
参考答案：A, B, C
We know the boy______ from England, but where_______ his mother come from?[ ]
A. am; do
B. is; is
C. are; does
D. is; does
绿波
