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【单选题】
某猪场一头公猪出现睾丸一侧肿大,另一侧萎缩,与该公猪交配的母猪出现流产。用乳 鼠肾细胞分离到一种能凝集绵羊红细胞的病毒,该病例最可能的致病病原是A.
猪瘟病毒
B.
猪细小病毒
C.
伪狂犬病病毒
D.
日本脑炎病毒
E.
猪繁殖与呼吸综合征病毒
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举一反三
【单选题】__________ in debt and faced with low wages , a lot of graduates in UK don’t have the ability to live independently .
A.
Graduated
B.
Graduating
C.
To graduate
D.
Being graduated
【简答题】A．It is not totally reliable. B．It doesn't guarantee a students ability in a certain subject. C．It often gives a fair picture of the year's work. D．It should be considered together with exceptions.
【简答题】This problem is ___________his ability and I don’t think he Call solve it. A) to B) in C) beyond D) under
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