A
     Henry worked on a ship, doing tricks (魔术). Each week he showed the same tricks over and over again, because the passengers on the ship were different. There was also a parrot on the ship. It saw the shows so many times that it understood everything. Then it started shouting during the show:
   “Hey, he has put the flowers under the table!”
   “ All the cards are the same.”
   “Look carefully. It’s a different hat!”
Henry was very angry but could do nothing.
One day the ship had an accident and broke into pieces. Henry fell into the water. When he climbed up onto a piece of wood, he found the parrot there. He looked at the parrot angrily and did not say a word. This went on for one day, then another and another. In the end, the parrot said, “Oh, how I wish I hadn’t said anything during the shows. Please tell me where you’ve put the ship and I won\t open my mouth again!”
51. Henry worked on a ship, _______.
   A. doing tricks                  B. playing with a parrot
   C. selling flowers                D. looking for his hat
52. The parrot saw the shows so many times that ________
   A. it knew where the ship was       B. it became very angry
   C. it didn’t want to say a word       D. it understood everything
53. After the accident, Henry was on a piece of wood with ________.
   A. some passengers     B. the parrot      C. some cards     D. the table