题目内容：

Once upon a time，a hippo （河马）lived in a river next to a big tree．

One day，a bird came and nested （筑巢）in the tree．The songs of the bird filled the hippo with so much envy （羡慕）that he couldn’t think of anything else．Every day he would think why he wasn’t born to be a bird even though the bird told him many times he was so lucky to be so big and such a good swimmer．

Finally，the hippo made up his mind that he would come out of the river，climb the tree and start singing．However，when he tried to climb the tree，it was very clear that the hippo didn’t have wings，nor claws to climb with．

Realizing that he would never climb up the tree，he angrily hit the tree until it came crashing to the ground．Then he stepped onto the leaves of the fallen tree，and began singing．

Unfortunately，hippos can’t sing，either．All that came from his mouth were terrible noises，and when the other animals heard this，they all came around to make fun of the hippo．

He was so ashamed by this．He also felt bad about having knocked the tree over．He used all his strength to raise the tree back up again，and look after it until it completely recovered．（康复）．

1.The hippo envied the bird because     ．

A. he could fly high

B. he could build a nest

C. he could sing well

D. he could live in the tree

2.After reading this passage，we know     ．

A. the writer is telling us a true story

B. the story happened on an autumn day

C. the bird thought he was luckier than the hippo

D. the hippo tried to do something against his nature．

3.The hippo in this story     ．

A. was happy all the time

B. did not respect his friends

C. liked to talk a lot but did nothing

D. corrected his mistake when he realized it

4.From the passage，we can infer（推断） that the hippo would     after such an experience．

A. be a good singer

B. be good at climbing trees

C. stop envying the bird

D. not make friends with other animals

5.The best title of this passage may be“     ”．

A. The hippo that wished to sing

B. The tree that was knocked over

C. The bird that wished to swim

D. The animals that were in high spirits．