题目内容

某猪场3日龄仔猪发病，主要表现精神沉郁，食欲废绝，排黄色水样稀粪，内含凝乳块，随后仔猪脱水昏迷死亡。剖检可见小肠黏膜充血，出血，胃内有凝乳块，肠系膜淋巴结充血水肿。可能的疾病是

A. 猪痢疾
B. 仔猪白痢
C. 仔猪红痢
D. 仔猪黄痢

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某猪场3日龄仔猪发病，主要表现精神沉郁，食欲废绝，排黄色水样稀粪，内含凝乳块，随后仔猪脱水昏迷死亡。剖检可见小肠黏膜充血，出血，胃内有凝乳块，肠系膜淋巴结充血水肿。分离该病病原首选的培养基是（）

A. 营养肉汤
B. 营养琼脂培养基
C. 血清琼脂培养基
D. 麦康凯琼脂培养基

仔猪黄痢疾多发生于7日龄以上的仔猪

A. 对
B. 错

1. Filling in the blank .Change the form if necessary.yieldcurbstuffedembarrassedposeWhen she heard it was snowing in the city they were going to, she ___ two more sweaters into her bag.Some people believe that the earth can _ enough food to support at least twice its present population.He was _ when he discovered that he didn’t have enough money to pay for the red wine he had ordered.The new system designed to _ harmful emissions from factories will be put into use soon.There is widespread concern that the rising unemployment may ___ a threat to social stability.

2. Match the words with the definitions.