1.It is only when we cannot see perfectly that we realize how important our eyes are.

2.They can see things that are far away, but they have difficulty in reading a book unless they hold it at arm's length.

3.The same comment is made from generation to generation and it is always true.

4.Events that the older generation remembers vividly are nothing more than past history.

5.What they reject more than anything is conformity.

答案：

1.只有当我们看东西不清楚时，我们才意识到我们的眼晴是多么地重要。

2.这些远视的人们能看清远处的东西，但是他们读书却很困难，除非他们把书举到一臂远的距离处去看。

3.同样的理论代代相传，而且总是正确。

4.老一代记忆犹新的重大历史事件对年轻人来说不过是过眼烟云而已。

5.他们所厌恶的莫过于循规蹈矩。