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英语专业四级听力50篇 040:How High Can You Jump?

时间:2018-03-02 08:55来源:互联网 提供网友:qing   字体: [ ]
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    (单词翻译:双击或拖选)

How High Can You Jump?

Fleas1 trainers have observed a strange habit of fleas while training them.

Fleas are trained by putting them in a cardboard2 box with a top on it. The fleas will jump up and hit the top of the cardboard box over and over and over again. As you watch them jump and hit the lid3, something very interesting becomes obvious. The fleas continue to jump, but they are no longer jumping high enough to hit the top.

When you take off the lid, the fleas continue to jump, but they will not jump out of the box. They will not jump out because they cannot jump out. Why? The reason is simple. They have conditioned themselves to jump just so high. Once they have conditioned themselves to jump just so high, that is all they can do!

Many times, people do the same thing. They restrict4 themselves and never reach their potential. Just like the fleas, they fail to jump higher, thinking they are doing all they can do.


点击收听单词发音收听单词发音  

1 fleas dac6b8c15c1e78d1bf73d8963e2e82d0     
n.跳蚤( flea的名词复数 );爱财如命;没好气地(拒绝某人的要求)
参考例句:
  • The dog has fleas. 这条狗有跳蚤。
  • Nothing must be done hastily but killing of fleas. 除非要捉跳蚤,做事不可匆忙。 来自《简明英汉词典》
2 cardboard DTGyB     
n.硬纸板,卡纸板
参考例句:
  • She brought the shopping home in a cardboard box.她将买的东西放在纸箱里带回家。
  • There is a sheet of stiff cardboard in the drawer.在那个抽屉里有块硬纸板。
3 lid E1NxP     
n.盖子,眼睑;v.加盖,盖上;制止,取缔
参考例句:
  • She shut the lid down.她扣上了盖儿。
  • Put the lid on the garbage can.把盖子盖在垃圾筒上。
4 restrict NWFx1     
n./vt.限制,限定,约束
参考例句:
  • He feels this new law will restrict his freedom. 他觉得这一新法律会限制他的自由。
  • Don't restrict her proper activities.不要拘束她的正当活动。
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TAG标签:   英语听力  英语考试  专业四级
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