15．听第三段材料，回答第12至第14小题 12．What happened to David in the morning？ A．He missed the first class． B．He lost his keys． C．He left his homework at home． 13．Did David pass the exam？ A．Yes，he did． B．We don't know． C．No，he didn't． 14．What will they do this evening？ A．Learn chemistry． B．Hang out． C．Go shopping．
14．Once there was a piano player in a bar（酒吧）．People came just to hear him（44）play（play）．But one night，a lady asked him to sing a song． "I don't sing，'said the man．I have played the piano here for five years．But I（45）haven't sung（ not sing）a song before others at any time．"said the man． But the lady told the waiter，‘I'm tired of（46）listening（listen） to the piano．I want the player to sing!' The waiter（47）shouted（ shout） across the room，‘Hey，friend!If you want to get your money，sing a song!' So he did．He had never sung in public before．Now he（48）was singing（sing） for the very first time!Nobody had ever heard the song Mona Lisa sung so beautifully! He had talent（天赋） he was sitting on!He may have lived the rest of his life as a no-name piano player in a no-name bar．But once he found，by accident，that he could sing well，he went on（49）working（work） hard and became one of the best-known singers in the US．His name was Nat King Cole． You，too，have skills and abilities．You may not（50）feel（feel） that your talent is great，but it may be better than you think．With hard work，most skills can（51）be improved（ improve）．Besides，you may have no success at all if you just sit on your talent．
