英语沙龙:How High Can You Jump?-你能跳多高？（在线收听）

How High Can You Jump?

Flea1) 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 won’t jump out because they can’t jump out.Why?The reason is simple.They have conditioned2) themselves to jump just so high.Once they have conditioned them－selves to jump just so high,that’s all they can do.

Many times,people do the same thing.They restrict3) themselves and never reach their potential4).Just like the fleas,they fail to jump higher,thin king they are doing all they can do.