权威公布！2018年6月大学英语六级（一+二+三卷）试题及答案公布！感受下难度...

共享单车：Bikes once were the most important means of transportation in the cities and villages in China which used to be called the Kingdom of Bikes. At present, with traffic congestion and air pollution becoming increasingly severe, riding bikes are popular again. In the past several years, Chinese entrepreneurs have combined the mobile Internet technology with traditional bikes, inventing a brand new commercial mode called shared bikes. The advent of shared bikes makes riding more convenient. People can ride shared bikes anytime as they wish only when equipped with a smart phone. To encourage people to ride bikes when they go out, cycle tracks have been built in many cities. Now, Chinese people in increasing numbers like building their bodies through riding bikes as well.

高铁：At present, China has the largest and fastest high-speed railway network in the world. The running velocity of high-speed rail will keep climbing and more cities will built their own high-speed rail stations. The high-speed rail greatly shortens people’s travel time. Compared with airplanes, high-speed trains have an outstanding merit which is punctuality because the operation of high-speed rail is basically not influenced by not only weather conditions but also traffic control. The high-speed rail has tremendously changed Chinese people’s life styles. At present, it has been the most preferred transportation for many people when they are on business trips. People in increasing amount also go traveling by high-speed rail on holidays. There are also many young people, who choose to work in one city and live in a nearby city, commuting between two different cities by high-speed rail everyday.