One day, a boy found a cocoon(茧) of a butterfly and brought it home. A few days later, the boy saw a small  35  in the cocoon. He sat and  36  for several hours as a butterfly struggled to make its body through that little hole. Suddenly it  37  .
So the boy decided to help the butterfly.He took a pair of scissors(剪刀) and cut the hole bigger.The butterfly came out 38 , but it looked a little different. It had a weak body and small, thin  39 . The butterfly didn’t start to fly. In fact, it has to spend the rest of its life crawling (爬行) around with a weak body and thin wings. It was never able to fly.
The boy acted with  40  but he didn’t understand why it could be like this. When a butterfly crawls out of the cocoon, it must struggle. The hard work of getting out of the cocoon 41  the fluid(液体) from the butterfly’s body into its wings. It helps the butterfly be  42  to fly. If the butterfly never has to squeeze(挤压) itself out of the cocoon, its wings will never  43 the fluid and it can never fly.
Sometimes struggles are what we need in our lives.  44  we lived our lives without any problems, we would never learn or grow. We would not be as  45  as what we could have been. We would never fly.
In our lives, pain and suffering is the key to all windows, and sometimes even means growth, without it, there’s no way of life. We can’t 46  difficulties or problems. So, next time you are faced with a problem or difficulty, remember the butterfly.
Struggle a little—then fly!

A．snake B．insect C．wall D．hole

A．read B．listened C．watched D．found

A．stopped B．began C．continued D．moved

A．wings B．head C．feet D．eyes

A．kindness B．excitement C．success D．humour

A．lets B．keeps C．makes D．asks

A．ready B．sorry C．glad D．kind

A．put B．refuse C．give D．get

A．When B．As C．Since D．If

A．wise B．quiet C．strong D．patient

A．cause B．avoid C．face D．have

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