阅读下面材料,在空白处填入1个适当的单词或括号内单词的正确形式。
The
distance between ancient Rome and ancient China was about 4,000 miles by land.
It was a very {#blank#}1{#/blank#} (danger) trip with deserts and mountains. The
Silk Road was a nickname for any route {#blank#}2{#/blank#} any trader took from China to Rome.
For
a very long time, the ancient Romans did not know who was making the wonderful
cloth {#blank#}3{#/blank#} (call) silk. They tried to find the traders as
they came into villages to trade other goods for silk, but the traders {#blank#}4{#/blank#} (hide) from the Romans. Therefore, they had to
trade for it {#blank#}5{#/blank#} (themself). The trading along the Silk Road
was a relay system. One trader would travel for a while, stop and trade, and
return home. {#blank#}6{#/blank#} next traveler would continue. And so it went.
But {#blank#}7{#/blank#} (actual) no trader made the whole trip. It was
too risky.
As
the years went by, a civilization of sorts grew up
along the Silk Road. Temples appeared. There were even cities built on the rare
oasis (绿洲). It was
never easy{#blank#}8{#/blank#} (travel) by land from China {#blank#}9{#/blank#}Rome, but it was worth it.
Rome traded gold for China's silk and spices. But {#blank#}10{#/blank#}(many) things traveled
the Silk Road than traders and goods. Ideas that changed the world traveled
along the Silk Road as well.