题目内容：

When I was a boy of twelve in South Carolina, something happened to me that made me never put any wild animal in a cage.

We lived near a forest, and every evening the mockingbirds （嘲鸫） would come and rest in the trees and sing. There isn't a musical instrument that can make a more beautiful _______ than the song of the mockingbird.

I decided to catch a young bird and keep it in a cage, and in this way, I would have my own private musician.

Finally I succeeded in catching a baby bird and put it in a cage. _______ , being frightened, the bird fluttered （扑腾） in the cage, but finally it settled down in its new home. I felt very pleased with myself and _______ : some beautiful singing from my little musician.

On the second day, the little bird's mother flew to the cage with food in her mouth. The baby bird ate _______ she brought to it. I was happy to see this. Certainly the mother bird knew how to feed her baby than I did.

The following morning when I went to see my bird, I discovered it on the floor of the cage, _______ . . I was terribly surprised! What had happened!

Arthur Wayne, my neighbor, who heard me crying over the death of the bird explained to me. Another bird, finding her young baby in a cage, will sometimes bring it poisonous （有毒的） berries. She thinks it better for her baby to die than to lose  _______. What do you think of it?

1.A.voice B.noise C.sound D.cry

2.A.At least B.At last C.Firstly D.At first

3.A.looked forward to B.learned from C.ran out of D.wrote down

4.A.anything B.nothing C.something D.everything

5.A.dying B.dead C.bored D.tired

6.A.friends B.parents C.freedom D.happiness