根据材料请回答 51～65 We know the kiss as a form. of expressing affection.But long before it became 51 ,it was the custom in many parts of the world to use the kiss as a(n) 52 of respect. In many African tribes the natives kiss the ground over which a chief has walked.Kissing the hand and foot has been a mark of respect form. the 53 times. The early Romans kissed the mouth or eyes as a form. of dignified greeting.One Ro-man emperor allowed his important nobles to kiss his lips, but the 54 important ones had to kiss his hands, and the 55 important ones were only allowed to kiss his feet! It is quite probable that the kiss as a form. of affection can be traced back to primitive times when a mother 56 fondle her child, just as a mother 57 today. It only remained for society to 58 this as a custom for expressing affection between adults. We have evidence that this was already the 59 by the time of the sixth century, but we can only assume it was 60 long before that.The first 61 where the kiss became ac-cepted in courtship and love was in France.When dancing became popular, almost every dance figure ended 62 a kiss. From France the kiss spread rapidly all over Europe.Russia, which loved to 63 the customs of France，adopted the kiss and it spread there through all the upper classes．A kiss from the Tsar became one of the highest forms of recognition from the Crown． In time，the kiss became a part of courtship． 64 marriage customs developed，the kiss became a part of the wedding ceremony．Today，of course，we regard the kiss as ai expression of love and tenderness．But there are still many places in the world where th。kiss is 65 0f formal ceremonies and is intended to convey respect． 第 51 题