.完形填空．（共20小题；每小题1.5分满分30分）先通读短文，掌握其大意，然后从A、B、C、D四个选项中选出一个最佳选项。 A young man was interested in jade(玉)stones. So he went to Mr Smith,a gemologist(玉家)，to learn from him. Mr. Smith refused because he feared(害怕) that the young man would not have ______ to learn.The young man asked for a chance again and again. _______ Mr Smith agreed and told him “Be here tomorrow” The next morning the young man came.Mr Smith put a jade stone in the young man’s hand and told him to________ it.He then went about his work.The young man sat quietly and waited. The following morning,Mr Smith again ______ a jade stone in the young man’s hand and told him to hold it.On the third,fourth,and _______day,Mr Smith did the same thing and repeated his______.On the sixth day,the young man held the jade stone, _______he could no longer stand the silence.”When am I going to learn something?”asked the young man. “You will learn,”said Mr Smith and went about his work.. Several more days went by and the young man felt very ________ .One morning he was asked to do it once more.As soon as he held it,the young man shouted _______ looking at his hand,”This is not the same jade stone!” “You have begun to _______,”said Mr Smith.