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英语四级听力阅读理解分享 四六级报名

学习经验 四级六级考试

2019年06月18日 15:57:42
下面小编跟大家一起了解英语四级听力阅读理解分享,希望对大家的学习的有所帮助。
40 How High Can You Jump? Fleas trainers have observed a strange habit of fleas while training them.
Fleas are trained by putting them in a cardboard 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 lid, 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. Once they have conditioned themselves to jump just so high, that is all they can do!

Many times, people do the same thing. They restrict themselves and never reach their potential. Just like the fleas, they fail to jump higher, thinking they are doing al they can do. Useful Words and Expressions:
1. cardboard 纸板
2. lid 盖子
3. conditioned 有条件的,习惯于……的
4. restrict ,约束 be restricted within narrow limits 限于狭窄的范围内
be restricted in one’s movements 行动受

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