Unit2 Welcome to the Unit
1.While the pace of change in the modern world gets faster and faster，people are becoming more and more aware of the need of preserve the world’s heritage．
随着当今世界发展变化的步伐日益加快，人们也愈来愈意识到保护世界遗产的必要性。
①the pace of change (社会)变化的步伐
It is very difficult to keep up with the rapid pace of change.
跟上社会变化的步伐是很困难的。
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