A long time ago, there was a king in India. (A) The king's favourite game was chess.
One day, a (B)wiseold man came to the palace and the king challenged him to a game. The king promised the old man, "You can have any prize if you win the game."
The old man said, "If I win the game, I'd like one grain of rice for the first square of the chessboard, two for the second, four for the third, and then double the amount for each of the rest of the squares."
"Is that all?" asked the king." Wouldn't you like gold or silver(C) _______?"
"No, just rice, "replied the old man.
The king and the old man played the game for a long time. (D)In the end, the old man won. So the king ordered his men to collect a bag of rice. He put one grain on the first square, two on the second, and so on. (E)国王很快意识到了问题— even with all the rice in the country, he would(F) ________ not have enough rice to put on all the squares!
