题目

How has smoking been controlled in recent years? People were asked to stop smoking in a range of public places—such as doctors’ surgeries, cinemas, theatres and churches—over the second half of the 20th century but it was after the King’s Cross Underground fire on November 18, 1987, caused by a cigarette end which resulted in 31 deaths, that restrictions on smoking in public places gained rapid and widespread acceptance. How did a ban on smoking in public places come into place? In 1998 the Smoking Kills White Paper set out a national strategy to reduce smoking prevalence (流行) a下列各式中，能够与3进行合并的是（　　） A、4B、12C、18D、24