One day in ancient Greece, King Hiero asked a crown（皇冠）maker to make him a golden crown. When he first saw the crown, he was happy with it. "It's a nice crown, isn't it?" he asked his men. But later, he began to doubt whether it was a real golden crown. The king sent the crown to Archimedes, a great scientist, because he wanted Archimedes to discover the truth.

"This problem seems difficult to solve. What should I do?" thought Archimedes. He was still thinking about it as he filled his bath（浴缸）with water. When he got into the bath, some water spilt（溢出）. "That's it!" shouted Archimedes. "I know how to solve the king's problem!"

Archimedes went straight to the palace to see the king. In the palace, he told the king he had an idea. First, he weighed the crown and asked the king for some gold of the same weight as the crown. Next, he put two pots into two big bowls and filled both pots with water. Then, he put the gold into one pot, and some water ran into the bowl. Finally, he put the crown into the other pot. This time, even more water ran into the bowl.

"Look at this," Archimedes said to the king. "The gold of the same weight as the crown made less water run into the bowl, but this crown made more water run into the bowl. So I'm sure that it's not made completely of gold."

"The crown maker fooled me, didn't he?" shouted the king. He then punished the crown maker. At the same time the king praised Archimedes.

根据短文内容，回答下列问题。

66．Why did the king send the crown to Archimedes?

67．What happened when Archimedes got into the bath?

68．Where did Archimedes go to see the king?

69．Which made less water run into the bowl，the gold or the crown?

70．Who did the king punish at last?