题干

某种链球菌的表面抗原与心脏瓣膜上某物质结构相似.被该链球菌感染后,机体通过免疫系统抵御该菌时可能引发某种心脏病.与这种心脏病致病机理最为相似的是(  )

A:肝移植引起排斥反应

B:接触某些花粉引起皮肤荨麻疹

C:HIV破坏淋巴细胞引起艾滋病

D:免疫系统“敌我不分”引起系统性红斑狼疮

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答案(点此获取答案解析)

D

同类题3

信息归纳

    With the rapid development of science and technology, communication methods of people have changed a lot in the past years. As we all know, in ancient times, people communicated with people who were far from them only by letters, which took a very long time to get the message.

    In the 19th century, telegraph (电报) was invented, but it was not widely used, letter is still the main method at that time. In 1836, John Coker invented the first electromagnetic telegraph(电磁电报机) in the world, then telegraph came into being and was popular, which was much faster than letter, bringing great convenient to people.

    As time goes by, telephones become increasingly widely used. Now, the phone has been developed as mobile phone, fixed telephone, Internet telephone and other categories, being an essential communication tool in modern information society.

    In addition, network communication is popular as well. It is especially widely welcomed by the youths. A great number of people communicate with others on the Internet by using software, such as email, QQ, WeChat, bbs, MSN and so on. Using software is easy. A computer which is connected to the network is enough. In China, WeChat has become the most popular communication software nowadays. WeChat, known as Weixin in China, is a mobile phone text and voice messaging communication software which is developed by Tencent. People can make video calls that not only can hear the sound, but also can see the people you talk to.

Information Card

The method of communication in ancient time

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The time when the telegraph was invented

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The person who invented the electromagnetic telegraph

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The software which has become the most popular in China

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The number of the communication methods which are mentioned

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