题目内容：

阅读短文，根据短文内容，从下面各小题所给的四个备选项中，选出最佳选项。

The well-known “new great inventions” of modern China have made our daily lives more convenient.

High-speed trains

China created its first high-speed railway line in 2008. Since then, the number of passenger trips has grown by over 30 percent every year. By 2016, more than 5 billion trips had been taken on the trains. By 2020, one-fifth of the country’s 150000-km railway network will be used by the trains. This network will link more than 80 percent of major cities across China.

Mobile payment

Mobile payment is turning China into a “cashless society”. Instead of paying by cash(现金) customers now pay for their goods and some kinds of bills simply by typing a short password into the Alipay(支付宝) or Wechat Pay app on their mobile phone.

Shared bikes

China has surprised the world with how quickly shared bikes are widely used. Nowadays, bike users can simply pick up or park the bike on the street through GPS and smart phone apps. China's two leading bike-sharing companies, Mobike and Ofo, have been opening their overseas markets in Singapore, the UK and the United States.

Online shopping

With around 751 million Internet users, China has been the world's largest and fastest growing online shopping market. Because of lower costs and fewer licensing requirements(执照要求), it’s easier for sellers to open an online shop in China. In 2016, more than 20 million jobs of rural areas were created, with over 8.1 million running their own online shops.

1.What is the passage mainly about?

A.The fast-developing technology. B.Modern China.

C.China’s new great inventions. D.Convenient daily lives in China.

2.By 2020_________of major cities across China will be linked by high-speed trains network.

A.20% B.40% C.60% D.80%

3.Mobile payment makes shopping more convenient in China because customers_________.

A.can go shopping without mobile phone B.needn’t take cash

C.don’t have to use a password D.needn’t pay for the bills

4.Shared bikes can be picked up or parked_________.

A.on the street B.in mobike and Ofo

C.in park D.in markets

5._________can make online shopping develop so fast in China.

A.Lower costs B.Fewer licensing requirements

C.More job chances D.A, B, and C