简述研究波痕的意义。

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问题:

简述研究波痕的意义。

考点:地质学沉积岩石学沉积岩石学题库
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One day, a boy found the cocoon(茧) of a butterfly and brought it home. A few days later, the boy saw a small   36  in the cocoon. He sat and watched for several hours as a butterfly struggled to make   37  body through that little hole. Suddenly it stopped. So the boy   38  to help the butterfly, thinking the butterfly might be   39 .He took a pair of scissors and cut the hole   40  .The butterfly came out of the cocoon but it   41 a little different. It had a weak body and small, thin   42  .The butterfly didn’t start to fly. In fact, the butterfly spent 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   43  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   44  out of the cocoon makes the fluid(液体) from the butterfly’s body into its wings. It helps the butterfly be   45  to fly. If the butterfly never has to squeeze(挤压) itself out of the cocoon, its wings will never get the fluid and it can never fly.
  46   struggles are what we need in our lives. If we lived our lives without any problems, we would never learn or grow. We would not be  47   we could have been and we would never fly.
In our lives, pain and suffering is the key to all windows, and sometimes even  48   growth, without it , there’s no way of life. We can’t avoid   49  or problems. So, next time you are   50 a problem or difficulty, remember the butterfly. Struggle a little—then fly!
小题1:
A.holeB.wormC.tallD.snake
小题2:
A.itB.it’sC.itselfD.its
小题3:
A.decidedB.askedC.showedD.ordered
小题4:
A.afraidB.interestedC.surprisedD.grateful
小题5:
A.slimmerB.biggerC.shorterD.smaller
小题6:
A.touchedB.sounded C.lookedD.smelt
小题7:
A.wingsB.feetC.eyesD.head
小题8:
A.successB.excitementC.kindnessD.humour
小题9:
A.getB.gettingC.to getD.got
小题10:
A.readyB.quiet C.gladD.used
小题11:
A.SomewhereB.SomethingC.Some timeD.Sometimes
小题12:
A.as helpful asB.as weak asC.as strong asD.as creative as
小题13:
A.repeatsB.recommendsC.requiresD.represents
小题14:
A.happinessB.difficultiesC.pleasureD.hope
小题15:
A.served withB.growing intoC.bringing inD.faced with
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下列关于空气的说法中,错误的是[ ]

A.工业上利用氧气和氮气的沸点不同,从液态空气中分离出氧气的过程属于物理变化

B.空气是一种十分重要的天然资源

C.若大量有害物质进入空气中,仅靠大自然的自净能力,大气还能保持洁净

D.按体积分数计,空气中约含有氮气78%、氧气21%、其他气体和杂质1%

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破碎筛分的目的是使矿物单体解离。

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皮质盲

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报告惯用的结束语有哪些?

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