The uniquely combined natural and cultural resource base has bec

The uniquely combined natural and cultural resource base has become a major ______ for China in its effort to develop tourism.
A、assess
B、asset
C、assert
D、assent
【正确答案】：B
【题目解析】：独特的自然和文化资源基地已成为中国发展旅游业的重要资产。