1. It is well-known to us that…(我们都知道……)=As far as my knowledge is concerned, …(就我所知…) I@:"Qee
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2. Recently the problem of…has been brought into focus. =Nowadays there is a growing concern over ...(最近……问题引起了关注) ;><m[ l6
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3. Nowadays (overpopulation) has become a problem we have to face.(现今,人口过剩已成为我们不得不面对的问题) jAy0k
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4. Internet has been playing an increasingly important role in our day-to-day life. It has brought a lot of benefits but has created some serious problems as well.(互联网已在我们的生活扮演着越来越重要的角色,它给我们带来了许多好处但也产生了一些严重的问题) \U.js-
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5. With the rapid development of science and technology, more and more people believe that…(随着科技的迅速发展,越来越多的人认为……) 9G^gI}bY
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6. It is a common belief that…=It is commonly believed that…(人们一般认为……) sI6coe5n