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病猪和感染猪是支原体的主要传染源,支原体存在于猪的呼吸道及其分泌物中,在猪体内存活时间很长,病猪在症状消失之后半年至一年仍可排菌()

A.正确
B.错误
答案: A. 正确支原体感染是猪群中常见的呼吸道疾病之一,病原体主要通过病猪和感染猪的呼吸道分泌物传播。支原体可以在猪的呼吸道中...
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1 Queen are a British rock band that formed in London in 1970. Their classic line-up was Freddie Mercury (lead vocals, piano), Brian May (lead guitar, vocals), Roger Taylor (drums, vocals), and John Deacon (bass guitar). Freddie Mercury wrote the lyrics, and there has been a lot of speculation as to their meaning. Many of the words appear in the Qu"ran. "Bismillah" is one of these and it literally means "In the name of Allah." The word "Scaramouch" means "A stock character that appears as a boastful coward." 2 Mercury"s parents were deeply involved in Zoroastrianism, and these Arabic words do have a meaning in that religion. Some of the lyrics could be about leaving his homeland behind. Guitarist Brian May seemed to suggest this when he said in an interview about the song: "Freddie was a very complex person: flippant and funny on the surface, but he concealed insecurities and problems in squaring up his life with his childhood. He never explained the lyrics, but I think he put a lot of himself into that song." 3 Another explanation is not to do with Mercury"s childhood, but his sexuality - it was around this time that he was starting to come to terms with his bisexuality, and his relationship with Mary Austin was falling apart. 4 Whatever the meaning is, we may never know - Mercury himself remained tight-lipped, and the band agreed not to reveal anything about the meaning. Mercury himself stated, "It"s one of those songs which has such a fantasy feel about it. I think people should just listen to it, think about it, and then make up their own minds as to what it says to them." He also claimed that the lyrics were nothing more than "Random rhyming nonsense" when asked about it by his friend Kenny Everett, who was a London DJ. 5 The band were always keen to let listeners interpret their music in a personal way to them, rather than impose their own meaning on songs. In the passage Freddie’s lyrics have words like "Bismillah", "Scaramouch", what do we know about these words?
A、They are actually easily comprehensible.
B、They show respect to the songwriter’s parents.
C、They can be found in the holy book of Islamic religion.
D、They represent the songwriter’s miserable childhood.

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B."
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诺尔曼·聂是美国社会学家、政治学家、大学教授、发明家、企业家( )。

答案: 错误。诺尔曼·聂(Norman Borlaug)是一位著名的美国农业科学家,他因其在提高粮食产量和推动绿色革命方面的贡献...
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