题干

蒙牛集团(眉山)有限公司该集团眉山公司2011年10月18日生产的250ML/盒包装的纯牛奶产品被检出黄曲霉毒素M1超标140%。蒙牛在其官网承认这一检测结果,并对该批次全部产品进行了封存和销毁。黄曲霉素(C17H12O6)会诱发癌症。下列有关说法错误的是(     )

A:黄曲霉素属于有机物

B:黄曲霉素由三种元素组成

C:黄曲霉素燃烧也会生成水和二氧化碳

D:黄曲霉素中碳、氢、氧的质量比为17:12:6

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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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