题目

下列各项中，属于微量元素的是（     ） A.C、H、N、P、Mn       B.Cl、Fe、S、N、Mg    C.B、Cu、Zn、Mn、Mo    D.N、P、K、Cu、Fe、I 答案：CLi Shizhen was born in 1518. His father was a poor doctor. Li Shizhen often saw that people fell ill. He decided to study medicine so that he could be able to help people. Li Shizhen read many books about medicine. He found many of the old medical books to be full of mistakes. So his wish was to write a new one. He did his best to study medical science. He studied not only the herbs（草药）in his own garden, but also the wild ones. He set out many times on long journeys to collect herbs and talk with old peasants. He learned a lot from the working people. After many years of hard work and study, Li Shizhen finished his great work “Ben Cao Gang Mu”（本草纲目）. At that time he was sixty. His book is now one of the greatest contributions（贡献）of the Chinese people to the medical science of the world. 1.Li Shizhen’s father was _________  A．a soldier          B．a doctor           C．a teacher          D．a peasant 2.Li Shizhen decided to study medicine because he wanted to _________  A．making a living      B．become famous     C．help the people who fell ill D．get more money 3.Li Shizhen wanted to write a new medical book because _________  A．he was a doctor                        B．he liked writing books C．many medical books were full of mistakes.    D．he was a writer 4.“Ben Cao Gang Mu” is A．a medical book     B．a medical worker    C．a herb            D．a dictionary 5.Li Shizhen collected a lot of       on his long journeys. A．flowers           B．living things        C．plants            D．herbs