Can you predict what our life will be like in the far future? Are you optimistic about it? Now, I'd like to talk about the future.

　　I think paper money will definitely be on the way out and eventually be replaced by credit cards. For a start，paper money isn't easy to carry. Secondly, it's safer for us to use credit cards. Thirdly, we can place orders online and pay by credit cards rather than in cash. Natural resources such as coal and oil are running out. By the time we use them up, we will have to rely on alternative energy, such as solar and wind energy for daily life and to power machines. Cars will become so advanced that we can change their colours and shapes at the flick of a switch.

　　We can enjoy many recreations, such as bowling, softball and concerts free of charge. We can load spaceships with waste and send them towards other planets. As we can get rid of rubbish in urban areas, there will be no need to have a landfill. As for operations, doctors can do surgery or telesurgery for outpatients without leaving their clinics. The police can arrest criminals by firing nets.

　　Do you think all my predictions will come true one day？

　　你能预测在遥远的未来我们的生活会是什么样子的吗？你对它乐观吗？现在，我想谈谈未来。

　　我认为纸币无疑将会过时，而且最终被信用卡代替。首先，纸币不方便携带；其次，使用信用卡更安全；第三，我们可以上网订购货物，然后用信用卡而不是现金付款。自然资源，如煤炭和石油，正在枯竭。我们用完这些资源时，就得依靠可替代性能源，如太阳能或风能来提供日常所需能量，带动机器。汽车会很先进，我们只需轻轻按一下开关，就可以改变汽车的颜色和形状。

　　我们可以免费享受很多娱乐活动，如保龄球、垒球、音乐会等。我们可以把废物装到宇宙飞船上，把它们送到别的星球上去。我们处理掉市区的垃圾后，就不再需要垃圾填埋地了。至于手术，医生们不用离开诊所就可以给门诊病人做外科手术或远程手术。警察可以射出网状物逮捕犯罪分子。

　　你认为我的所有预言有朝一日能够实现吗？