3 . China is famous for having the world’s biggest and fastest train network. A train ride should be included in your travel schedule. Traveling in China by train is easy and fun, even for first -timers. However, you might not be familiar with China’s rail system, making it difficult for you to decide which train option will be better for you. Here’s some information about the differences between the train types and the processes for collecting your tickets.

In China, trains are classified by service and speed. Different letters indicate different types of the train.

* G-Trains (high -speed trains) and D-Trains (bullet trains) are currently the newest, fastest and most comfortable trains in China, with a speed of over 180km/h.

* Z-trains, T-trains and C-trains with a speed of 120km/h- 170 km/h are express trains in China. These trains rank top among the most -valuable trains for time -saving, cost-saving as well as a selection of seats.

* K-trains are slower than Z-Trains and T-Trains. It stops at more stations and runs to some less famous counties in China. Trains with numbers only are not recommended as they are the slowest and poorly-equipped.

You can book your China train tickets once your schedule has been confirmed. To guarantee a smooth trip, you are strongly advised to book your tickets in advance, especially when traveling in the busy season.

There are different ways to buy train tickets in China, including booking online, at a train station, or at a ticket office, among others.

The best and most convenient way is to book online. It provides a helpful and professional one-to-one service as well as continuing 24/7 after -sales support. The train tickets are usually put on sale 30 days in advance.

5 . In the UK, there is a popular route (线路) for cyclists (bikers): the road from Land's End in England to John O’Groats in Scotland. The road is 874 miles long. It covers almost the full length of Great Britain. The 12-year-old boy named Laurence Chandler became the youngest cyclist to finish the route.

Chandler took 20 days to finish the challenge. Each day, he cycled between 40 to 60 miles. He spent six hours on his mountain bike daily. Chandler had to push through rainy and windy days. Cycling uphill was also hard.

“It was much harder than I thought. I didn’t expect so many hills and how busy the roads were,” Chandler said. “But if you put your mind to anything, then no matter how big, you can do it.”

Chandler first thought of trying the route when he read an article about it two years ago; Later, as his fther's50th birthday came around, he decided to go for it. He was already used to cycling around his village and to school before starting his journey.

During his ride, Chandler raised 600 pounds for Smile Train. Itis a children’s charity that pays for surgery for children in developing countries who have clef lips (兔唇).

Both research and     1     (explore) in the Arctic are fundamental to understanding and dealing with climate change issues. With the melting of Arctic ice, the polar region could provide an opportunity to     2     (well) understand the effects of global warming. The Arctic is     3     great importance, among other things, for the environment, trade, investment, energy and security. It is evaluated     4     (have) a quarter of the world’s oil and natural gas. China has a clear Arctic policy, explained in a White Paper,    5     corresponds well with the concept of a “Polar Silk Road”.

Thanks to global warming, Arctic ice is melting,    6     (open) up the possibility of a “Northern shipping route” via the Northwest, Central and Northeast     7     (passage). Shipping time between China and Europe via the Arctic would be shorter than     8     existing one through the Indian Ocean and Suez Canal. Although this does not mean the “Northern route” would replace these established ones, it would represent a new chance,    9     (particular) in the trade of energy and minerals. As issued in the white paper, great importance     10     (attach)to voyage security in the Arctic shipping routes and studies on the routes by China these years.