A man found the cocoon(茧) of a butterfly, One day a small           appeared , He sat and watched the butterfly for several hours as it         to force its body through that little hole. Then it seemed to stop making any          . It appeared as if it had gotten as far as it could, and it could go          further.
So the man decided to         the butterfly. He took a pair of scissors and cut off the remaining bit of the cocoon.
The butterfly came out      .  But it then had a swollen（肿胀的）body and small, shriveled (褶皱的)         .
The man           to watch the butterfly because he’d expected that , at any moment, the wings would enlarge to be able to           the body , which would contract (缩小) in time . So he waited patiently.
         happened! In fact, the butterfly          _the rest of its life crawling (爬行)around with a swollen body and shriveled wings , It was never able to          .What a shame!
The man, in his kindness and fast action, made a          . He did not understand that the suffering and the struggle          for the butterfly to get through the tiny hole were nature’s way of           fluid (体液) from the body of the butterfly into its wings           it would be ready for flight once it achieved its           from the cocoon.
　 Sometimes struggles are          what we need in our lives. If nature allowed us to go through our lives           any difficulties , it would weaken or even disable us. We would not be as           as what we could have been . We could never fly !

A．mark B．insect C．sign D．opening

A．learned B．struggled C．pretended D．expected

A．progress B．decision C．choice D．noise

A．any B．still C．no D．much

A．study B．help C．trouble D．leave

A．silently B．naturally C．easily D．excitedly

A．wings B．legs C．feet D．head

A．waited B．stopped C．hoped D．continued

A．examine B．cover C．trust D．support

A．Neither B．All C．Either D．Both

A．devoted B．spent C．put aside D．gave up

A．walk B．fly C．get through D．get up

A．mistake B．discovery C．face D．fortune

A．wasted B．watched C．required D．searched

A．forcing B．making C．producing D．letting

A．even though B．as if C．so that D．in case

A．energy B．freedom C．progress D．life

A．almost B．probably C．hardly D．exactly

A．with B．by C．from D．without

A．wise B．satisfied C．strong D．patient