1) Of all American cities, San Francisco is considered by many to be by far the most beautiful.
2) Jobs and work do much more than most of us realize to provide happiness and contentment.
3) We are much less conscious of the extent to which work provides the more crucial(关键)psychological well-being that can make the difference between a full and an empty life.
4) Work is more than a necessity for most human beings; it is the focus of their lives, the source of their identity and creativity.
5) Rather than a punishment or a burden, work is the opportunity to realize one’s potential.
6) Few pastimes bring a family closer together than gathering around and listening to mother or father read good story
7) Man differs most from all the other animals in his ability to learn and use language but we still do not know exactly how this is done.
8) Generally speaking(In general), young people are less conservative(保守)than old people.
9) The way the brain works is far more complicated than they had thought.
10) The more scientists find out, the more questions they are unable to answer.
