题目内容

最急性型小鹅瘟多见于1周龄内的雏鹅或雏番鸭。发病率可达100%，病死率高达95%以上。

A. 对
B. 错

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急性型小鹅瘟的症状包括（）。

A. 腹泻，排灰白或青绿稀粪，混有气泡。
B. 呼吸困难，鼻流出浆液性分泌物。
C. 喙端、爪色泽变暗。
D. 死前两腿麻痹或抽搐。

How long will it take for Randy to Tianjing from Beijing?

A. 30minutes
B. 30hours
C. 30days
D. 13minutes

How often does the Randy couple visit each other?

A. twice a week
B. twice a month
C. once a week
D. once a month

Does Randy buy the tickets in advance when he is in Beijing south station?

A. Yes, he dose.
B. No, he doesn't.
C. It depends
D. Sorry, I don't know