1.Jobs and work do much than most of us realize to provide happiness and contentment

2.We are much less conscious of the extent to which work provides the more crucial psychogical well-being that can make the difference between a full and empty life.

3.Work is more than a necessity for most human beings;it is the focus of their lives，the source of their identity and creativity.

4.Rather than a punishment or a burden，work is the opportunity to realize one’s potential.

5.Many Americans choose to travel by car rather than by any other means of transportation

6.Generally speaking，young people are less conservative than old people四级及格线

7.The more scientists find out，the more questions they are unable to answer.

8.Social customs are different from what they used to be fifty years ago

9.Behaviour which may be considered quite strange in one culture is often looked upon as completely normal in another.

表示过渡

1.This is not necessarily the case，however.

2.Good intentions alone are not enough

3.But modern research has found that this is not so.

4.What does this mean as far as the project hope is concerned?

5.As far as I am concerned，some people are lucky while others seem marked by bad fortune.

6.What is point of being rich?