The "One Belt One Road" strategy(策略) proposed by President Xi Jinping has drawn public attention to     1     oldest and longest trade route-Silk Road．The term in a narrow sense refers to an ancient overland trade route     2     （form） in the Western Han Dynasty．This route stretched 4，350 miles from Chang's an to western China，central Asia and even to Europe,     3     （enable） theses regions to have better communications in diplomacy（外交），business and culture．

China was the first country in the world to breed silkworms and produce silk fabric．This craft skill reached a     4     （fair） advanced level in the Zhou Dynasty．As a major export to Europe， "silk" was used to name this great route by a German geographer．China's silk     5     （introduce） into western countries through this old trade route．People were     6     （familiar）with his product at the beginning，and made many guesses at     7     it was produced．According to the record， the idea that silk was picked from trees was widely accepted by folks in Europe．

    8     （garment 服装） made of this fabric were always best sellers，and were considered a social status symbol．Ever the gorgeous Egyptian queen，Cleopatra，was also a big fan of the silk．This fascination led     9     an increasing demand for this product，and promoted the     10     （develop） of this trading route．

It is hard to give a precise     1     (definite) about what Western art is. Maybe the best way     2     (understand) Western art is to look at the development of Western painting over the     3     (century). The goal of Western art was to teach people about Christianity during the Middle Ages. New ideas and values     4     (gradual) replaced old ones from this period. During the Renaissance,     5     important breakthrough was the use of perspective. Another innovation was the use of oil paints. In subject matter, the emphasis     6     (increasing) shifted from religious themes to people and the world around us. The development of Western art     7     (slow) until the invention of photography in the mid-19th century.     8    , painters had to find a new way of looking at the art. From this, Impressionism     9     (emerge) in France. After Impressionism,     10     the artists attempted to do was no longer show reality, but instead to ask, “What is art?”