1.  Because they like to their work, also, they are interested on their major knowledge, they think that there is a good chance for them, they can't give up, so, they must too work hard for themselves also for their company .

2.  In order to make a living and build our country, we must have some skills and maste some major knowledge .

3.  To the major knowledge, we can listen to the teacher in the class and study it in our spare-time .

4.  As to the major knowledge, some college students complain that they can not learn anything in the four years' study while many other college students actually improve their ability and knowledge during the significant four years.

5.  In university, we learn well-balanced knowledge in combination of major knowledge with other necessary knowledge.