法门寺地宫出土的银质（），内设双轴相连的同心圆机环，无论外层怎样转动，内层总能保持平

     A factory began to make a new kind of dog food. A big party was held to    1    the new dog food
to everyone. People    2    the newspapers and TV stations were there.
     There was a dog   3     the party. He would eat the dog food and have his pictures      4   . The plan
was to show everybody    5    the dog would like the new dog food. 
     When the time      6   , a plate of the dog food was given in front of    7    . Everyone looked at the

dog. But there was one    8    . He didn't eat any of it. The dog didn't like the dog food!
     The boss (老板) of the factory had to do    9    quickly. All of the people were watching. All of the
people were    10    . So he ate the dog food himself.