Magic（魔法）often forces us not to believe our own eyes or even app

Magic（魔法）often forces us not to believe our own eyes or even appears to be breaking the laws of physics or nature! The word "magic" has many different meanings. When a bird appears in a hat or when someone declares that he could see into the future—both can be called magic. When a sick person suddenly becomes well or a well person (or even animal) becomes ill, magic is the cause. The British author Terry Pratchett uses magic a great deal in his popular Discworld series of books.Magic has always been used for fun. People enjoy working out in which cup the little ball is or how he knows which card I was thinking of. Harry Houdini was one of the first world-famous magicians—famous for escaping from deadly situations. Recently David Copperfield, or David Blane, has become very popular for his "unbelievable abilities", such as making the Statue of Liberty disappear or rise.Magical rings and three-headed dogs may not be real, but does this mean nothing magical really exists? Can you always explain how the magician has done the card trick? Maybe it is better not to explain, but to leave a little magic in our lives. Pick a card, any card...The author explains what magic is in Paragraph 1 by_____.
A、using examples
B、giving causes and effects
C、listing the time of magical events
D、comparing a healthy person with a sick one
【正确答案】：A
【题目解析】：本题为判断题。第一段作者解释了魔法是什么。A利用例子；B用因果关系；C列出魔法事件的时间；D对比健康人和病人。通过分析和判断可以看到作者列举了鸟儿出现在帽子里、某人宣称可以预测未来事件和病人突然康复或者健康人（甚至动物）生病等例子来解释魔法。因此本题选择A。