In recent years, climate change in the Arctic has drawn many scientists' attention. 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 estimated    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. At though 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.

A historic bottle of whiskey (威士忌) can soon be     1     (you) — if you have tens of thousands of dollars     2     (spend). The whiskey,     3     (discover) in LaGrange, Georgia, is about to go up for auction (拍卖) and bids are expected to fall between $20,000 and $40,000. This Old Ingledew Whiskey is believed to be the oldest known whiskey in     4     (exist), according to Skinner, who is hosting the auction. Research indicates the wine was     5     (probable) produced between 1762—1802, around the time of the Revolutionary War.

Financier John Pierpont Morgan reportedly bought the bottle during one of his frequent visits to Georgia, Skinner said. It is believed to have been bottled in LaGrange in     6     1860s, according to the auction house,     7     said it was standard practice to store spirits (烈酒) in bottles after being aged in oak barrels. Morgan     8     (send) it as a gift to a close friend and neighbor, Francis Drake,     9     family safeguarded the bottle for three generations.

While this may be the oldest known bottle of whiskey, it’s nowhere near the most expensive. In 2019, the Macallan Fine and Rare 60-Year-Old 1926 became the     10     (high) priced bottle of wine ever auctioned when it sold for $1.9 million.

The United Kingdom has a long and     1    (interest) history to explore,     2     can help you understand much more about the country and its traditions. Almost everywhere you go in the UK, you     3         (surround) by evidence of four different groups of people who took     4     at different times throughout history. The first group, the Romans, came in the first century. Some of     5    (they) great achievements included building towns and roads. Next, the Anglo-Saxons arrived in the fifth century. They introduced the beginnings of the English language, and changed     6     way people built houses. The Vikings came in the eighth century and     7    (leave) behind lots of new vocabulary, and also the names of many     8    (locate) across the UK. The last group were the Normans. They conquered England after the well-known Battle of Hastings in the 11th century. They had castles     9    (build) all around England, and made changes to the legal system. The Normans were French, so many French words     10    (slow) entered into the English language.

China is widely known for its ancient civilization, and among the many     1     (factor) the writing system has played an important role.

The earliest written Chinese was based on pictures,     2     (date) back several thousand years to the use of animal bones and shells where symbols     3     (carve) by ancient Chinese people. Later the symbols became     4     well-developed writing system. Over time, it developed into different forms, because there was a time when people were divided geographically     5     it in turn led to many varieties of dialects and characters. It was after Emperor Qinshihuang united the seven major states that the Chinese writing system began to develop in one direction. The writing system was     6     great importance in uniting the Chinese people and culture.

Ever since, the writing system     7     (become) an important means connecting China’s present with its past, which made it possible for people in modern times     8     (read) the classic works written by Chinese in ancient times. The high regard for it can be seen in the development of Chinese calligraphy,     9     has been an important part in Chinese culture.

Today, as China plays a     10     (great) role in global affairs, more and more international students are beginning to appreciate China’s culture and history.