考研英语作文的锦囊句子之段首句3

　　15. ________ has become a hot topic among people, especially among the young, and heated debates are right on their way.

　　16. Recently, ________ has become the focus of the society, and in this way.. People swarm to ________.

　　17. ________ has been playing an increasingly important role in our day-to-day life. It has brought us a lot of benefits but created some serious problems as well.

　　18. Man is now facing a big problem-________, which is becoming more and more serious. First, ________ second, ________.

　　19. Nowadays more and more people are beginning to be aware of the seriousness of ________.

　　20. It is only during the last years that man has become generally aware that ________.

　　21. There is an old saying, ________. Its the experience of our forefathers, however, it is correct in many cases ever today.