开篇句型

　　1. Many nations have been faced with the problem of …

　　2. Recently the problem has been brought into focus.

　　3. Recently the phenomenon has become a heated topic.

　　4. Recently the issue has aroused great concern among …

　　5.) Nowadays there is a growing concern over …

　　6. Never in our history has the idea that … been so popular.

　　7. Faced with …, quite a few people argue that…

　　8. According to a recent survey,…

　　9. With the rapid development of …