而我们在写关于该不该禁烟的话题时，可以这样开头：A recent study conducted by Zhongshan University has found that the number of smokers has been increasing sharply over the past five years. Research findings also reveal that the incidence of smoking-related conditions has soared. As a result, the ban on smoking has been in the spotlight. (中山大学最近做的一个研究表明，在过去五年里，吸烟者人数急剧上升。研究结果同时显示，吸烟导致的疾病发病率也急剧增长。因此，禁烟成了个热点话题。)
