完形填空

　　People often have curiosity．When a person is curious about something, it means he is 　　1　　 in it and wishes to know more about it．There is 　　2　　 wrong with curiosity in itself．Whether it is good or bad depends on what people are curious about．

　　Curiosity is 　　3　　 silly or wrong．Some persons with nothing to do are 　　4　　 of curiosity about what their neighbors are doing．They are 　　5　　 to know what they are eating or drinking, what they are 　　6　　 home or taking outside, or why they have come home so early or late．To be interested in these things is 　　7　　 because they are not at all 　　8　　．It is 　　9　　 for them to know what their neighbors do or are doing．Such curiosity is something not only foolish but also 　　10　　．Most probably, it 　　11　　 to small talk which often brings harm, shame or disrespect to 　　12　　, and thus 　　13　　 their feelings．

　　On the other hand, there is a 　　14　　 curiosity-the curiosity of wise men, who 　　15　　 at all the great things and try to find out all they 　　16　　 about them．Columbus could 　　17　　 have found America if he had not been 　　18　　．James Watt would not have made the steam engine without his curiosity about the raising of the kettle lid．All the discoveries in the world have been made 　　19　　 a result of curiosity, but the curiosity is never about unimportant things which have 　　20　　 or nothing to do with the happiness of the public．