【正确答案】The Silk Road was a historically important1 international trade route, which was originated2 during the 1st century BC. Because silk comprised a large proportion of3 trade along this road, in 1877, it was named 'the Silk Road' by Ferdinand vonRichthofen, an eminent German geographer. It was not only an ancient international trade route, but also a splendid culturalbridge linking China, India, Persia, Greece and Rome, etc. It was through this bridge that4 the Four Great Inventions of Chinaand religions of the West were introduced into different countries.

【答案解析】1．具有重要历史意义的：译为historically important。 2．起源于：译为originated，也可翻译为dated back to、dated from等。 3．占有很大比重：译为comprised a large proportion of。 4．正是通过这一桥梁：译为It was through this bridge that...。原文中的“正是”有强调的意味，故应采用强调句式。