China has built a high-speed passenger rail network in recent years and will continue to enlarge     1     (rapid). By the end of 2017, China's railway mileage     2     (reach) 127, 000 kilometers, and 25,000 km of it are high-speed rail,     3     makes China's high-speed system the world's     4     (large) high-speed network.

China’s high-speed trains are similar to those of France's TGV, Germany’s ICE and Japan's Shinkansen. The fast trains with     5     top speed of 250 - 350km/h are called CRH, China Railway High-speed.

If you want to travel around China, the high-speed trains will be your ideal vehicle since they are clean, comfortable and modern. Unlike the traditional trains in China, no smoking     6     (allow) on high-speed trains, not even between carriages.

To meet the     7     (require) of different passengers, the high-speed railway operators have divided CRH tickets into three types. They are business, first class and second class. There's never a mad crowd with many people     8     (sit) in the aisles as well as in seats.

The ticket prices for China's high-speed trains are reasonable     9    , on most routes, the frequency of departure is very high, so it's quite convenient for people     10     (buy) tickets.

China has built a high-speed passenger rail network in recent     1     (year) and will continue to expand it. By the end of 2018, China's railway mileage (里程)    2     (reach) 131,000 kilometers, of     3     29,000 kilometers were high-speed rail. This accounted for 2/3 of the world's total high-speed rail tracks, making China's high-speed rail system the world's     4     (large) high-speed rail network.

China's high-speed trains are similar     5     those of France's TGV, German's ICE and Japan's Shinkansen. The fast trains with a top speed of 250-350 km/h     6     (call) CRH, China Railway High-speed.

If you want to travel around China, the high-speed trains will be your ideal choice since they are clean, comfortable     7     modern. Unlike on the conventional trains in China, nobody is allowed     8     (smoke) on high-speed trains, not even between carriages.

The seats are as good as those on the plane or even better. Most high-speed rail tickets have corresponding (对应的) seats, and only     9     small number of standing tickets are sometimes sold on limited trains. There's never a crowd of people sitting in the aisles. The ticket prices for China high-speed trains are reasonable and, on most routes, the frequency of departure is very high, so people can buy tickets    10    (convenient).

Amsterdam     1     (call) the “City of Bicycles” because of the convenience of riding bicycles there. In the 1960s, a group of cycling fans had     2     idea that it would be better for everybody if cars weren't allowed in the city centre and only bicycles were. They were     3     (hope) that this would help to save energy, reduce     4     (pollute) and provide free public transport. The group painted hundreds of bicycles white and placed them in lots of neighbourhoods around Amsterdam for people to use.

    5     (fortunate), it didn't work because     6     (thief) took all the bicycles within weeks! However, more than thirty years later, the “white bike” is back in town — this time with a computer chip to record its every move!    7     (take) a bicycle, you have to insert a special card. People who want to use the bikes     8     (park) at special parking places have to take them to another special parking place     9     has enough room. Thanks to the good ideas of lots of people, many people around the world have been enjoying city center streets     10     cars for many years.

High-speed railways, electronic payments, shared bicycles and online shopping are China’s four new ways of life. They are most appealing to youths from 20 countries participating     1    the Belt and Road Initiative. The new four great inventions are all related to China’s high-tech innovation,    2    has improved the quality of people’s lives, “My wallet is no longer in use. I can buy and eat whatever I want     3     (simple) with a tap of my phone,” said Lin Jinlong, an overseas Chinese student from Cambodia,    4    (add) that even pancake sellers are using Alipay (mobile payment).

In     5    word, China is leading in many ways. Bike sharing, for example, is not new itself. But China has made it much more convenient and    6    (enjoy) both in China and overseas. Leading Chinese bike-sharing     7    (company) Mobike and Ofo are now operating in foreign countries such as Singapore and Britain. Users in the countries felt excited and     8    (post) photos of themselves riding the Chinese bikes on social media. A growing number of foreigners hope     9    (promote) economic development in     10    (they) home countries by paying more attention to the achievements of China.

We know that smartphone addiction can affect lives in negative ways. A 2017 University of Texas study claimed that merely    1    (place) a smartphone in someone’s line of sight slowed down their productivity and reduced their grades. An earlier study from London found students who didn’t use smart phones saw their test scores increase     2    6.4 percent.

It is     3    (extreme) difficult to break away from smartphone addition. Some people have event red punishing     4    (they) for using their devices. Now, an APP is being released(发行) in the UK that rewards people for staying away from their smart phones. The APP, called Hold,    5    (create) by three Norwegian university students, who found that positive rewarding was the most     6    (effect) way of conquering smartphone addiction. Hold allows students to collect points for staying away from their devices between the hours of 7 a.m.    7    11 p.m.; they get 10 points for every 20 minutes. The points    8    (collect) can be used for discounts on everything from cinema tickets to food and drinks. A cinema ticket, for example, costs 60 points, or 2 hours away form a phone.

Over 120, 000 people in Norway, of    9    40% are college students, use the app. It’s now available    10    students from over 170 universities in the UK.

China plans to complete the construction of a space station and have     1    put into operation around 2022,said Zhou Jianping. the chief designer of China's manned space program, at a forum(论坛）    2    (hold)in south China's Guangdong Province. The space station     3    (design)to weigh 100 tonnes and accommodate three astronauts,     4     could be enlarged if needed, according to Zhou.

“The main goal of the construction of the space station is to enable China to become a country     5    (independent)mastering the technology for long-term manned flight in near-Earth space, and having the capability to carry out long-term manned scientific     6    (experiment) in near-Earth space and comprehensive development and utilization(利用）of space resources,”    7    (say)Zhou at the 4th China Summit Forum on Human Factors Engineering, which was held at Sun Yat-sen University from Saturday to Sunday.

The space station will be built as China's main platform for space science research,     8     the intention of mastering the technologies in constructing and     9    (operate)large space facilities, the technologies that guarantee life and health of astronauts who often fly in orbit, and the construction of a     10    (nation)space lab, according to Zhou.