问题
选择题
Tourism, it brings in money to a country,can also result in damage to the World Heritage sites there.
A．because
B．as
C．while
D．since
答案
答案：C
句意：尽管旅游业给一个国家带来金钱，但它也能对那里的世界遗产带来损害。while相当于although。
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