1. (2017·杭州模拟) 通过下面短文，掌握其大意，然后在各题所给的四个选项（A、B、C、D）中选出一个最佳选项。
    Tuesday was my birthday. I expected a day of cake and presents 1    it turned into a day of mystery(神秘). Someone sent a bottle with a letter and a treasure map .It said there was a treasure of over 20 million dollars. I didn't know if it was a trick(恶作剧) or if I should 2 it. If it was 3 , it would be the best present I had ever got. I decided to try .
    Two of my friends came and we rented a truck.  4,I thought about turning back twice during this trip, but I didn't think it was a5decision . I needed to give this trip twice the effort(努力) I had been putting in. This would take all my trust in order for me to find the 6.
    “The map says you have to turn when you see a large stone with a red circle,” said one of them.
    “What do we do after the turn?” I asked 7.
    “It says we should see a tree. We are 8to turn 20 meters north of it and dig.”　
    We got there and dug. We had 9at first digging but we got better and worked very 10. My trousers were dirty but I kept digging 11 I hit something. It was a large metal box. We 12the lock and looked inside. There was a letter. It read:
    “The lesson you have learned will be very  13. If you put as much14 in anything you do as you did in finding the 15, you will have found the key to making over 20 million dollars.”
    This was a trick from my parents. I thought I would never forget this special birthday present.