butterfly.He 3 it home.

　　A few days later，a small 4 appeared；he sat and watched the butterfly for several hours 5 it struggled to force its body through that little hole.Then it seemed to 6 making any progress.It appeared as if it had gotten as far as it could and it could go 7 farther.

　　Then the man decided to help the 8 ，so he took a pair of scissors and 9 the remaining bit of the cocoon.

　　The butterfly then came out 10 .

　　11 it had a swollen(肿胀的) body and small，shriveled(枯萎的) wings.The man 12 to watch the butterfly because he expected that，at any moment，the wings would 13 to be able to support the body，which would contract in time.Neither happened！ 14 ，the butterfly spent the rest of its life crawling(爬) around with a swollen body and shriveled wings.

　　It never was able to 15 .

　　What the man in his kindness and haste did not understand was that the restricting(限制的) 16 and the struggle required for the butterfly to 17 the tiny opening were nature's way of forcing fluid(液体) from the body of the butterfly into its wings so that it would be ready for flight once it achieved its 18 from the cocoon.

　　Sometimes 19 are exactly what we need in our life.If we were allowed to go through our life without any challenges，it would weaken us.We would not be as 20 as what we could have been.And we could never fly.

1.A.cold B.kind

C.polite D.tiresome

2.A.unless B.if

C.while D.because

3.A.took B.moved

C.circulated D.dashed

4.A.sign B.shadow

C.shade D.opening

5.A.and B.until

C.as D.then

6.A.stop B.prevent

C.appeal D.adapt

7.A.any B.more

C.no D.much

8.A.bug B.butterfly

C.animal D.fly

9.A.took down B.took apart

C.cut down D.cut open