我国著名诗人余光中先生的《乡愁》诗中写到“…而现在，乡愁是一弯浅浅的海峡，我在这头，大陆在那头．”诗中“海峡”是指（　　）

   There was a little boy who got angry easily. His father gave him a bag of nails(钉子) and told him that every 1 he got angry, to drive a nail into the back wall. The first day the boy had 2 37 nails into the wall. Then he put fewer and fewer nails. He found it was 3to be not angry than to drive those 4 into the wall. 　Finally the day came when the boy didn't get 5 at all. He told his father about it and the father suggested that the boy now pull out one nail for each day that he was able to be not angry. The days 6 and the young boy was finally able to tell his father that 7 nails were gone. The father took his son by the hand and led him to the 8. He said, "You have done 9, my son, but look at the holes in the wall. The wall will 10 be the same. When you say things 11, they leave a scar(伤疤) just like this one. You 12 put a knife in a man and draw it out. It won't matter 13 you say I'm sorry, the wound（伤口） is still there. A mental hurt is as bad as a physical one. Friends are a very rare jewel, indeed. They make you 14  and encourage you to succeed. They lend an ear, they share a word of praise, and they always 15 to open their hearts to us.