性口蹄疫引起犊牛死亡的原因是()。
A.肺炎
B.心肌炎
C.口蹄部溃烂
参考答案:B
The city of Harbin is beautiful all the year around, in winter. Ice lanterns decorate streets and attract plenty of tourists.
A. especially B. generally C. probably
乙类传染病中下列疾病必要时采取强制性措施控制,除了
A.伤寒
B.获得性免疫缺陷综合征
C.淋病
D.梅毒
E.炭疽