In general, city life is relatively convenient and comfortable.(1)_______________________________________.Whenever one wants, all he has to do is just turn on a tap or press a button.There is also a variety of vehicles for transportation,from buses and cars to trains and planes,which help people move about efficiently.Shopping centers are seen here and there in cities.(2)__________________________________________.Besides the fun of making purchases, there are also countless theatres, cinemas,art galleries and restaurants providing residents with various kinds of fascinating entertainment.It is true that to some extent, city life is divorced from nature.It is sometimes very exhausting because of its fast-moving pace.But on the other hand, nothing in the world is perfect; neither is city life.Viewed positively, the disadvantages should still be outweighed by its attractions.In fact, the disadvantages can be regarded as challenges to make life in the city more interesting, more exciting and more meaningful.(3)______________________________________.