B:Do you have any brothers or sisters? 你有兄弟姐妹吗? A:No,I'm the only child in the family. 没有,我是个独生子. B:That's because of the one-child policy, is that right?是由于计划生育政策,对吗? A:That's right.China has a large population,you know.是的.中国人口太多了您是知道的. B:Yes.I understand. And China has a large number of bicycles,too! 是的.我明白.而且中国 还有大量的自行车呢! A:You're certainly right!Oh,here we are the cigarette-stand. 完全正确.哦到了,香烟摊.