单项选择题

By saying "... those raw materials exist already in abundance in every nation", the author is refer ring to __________.

A．hosts and staff to welcome visitors
B．people, the environment and culture
C．the capital used to build the tourism industry
D．the environmental resources to build up tourism
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单项选择题
Why does the author assert that through travel we only truly touch one another
A．Because he believes tourism makes it possible for people to help one another.
B．Because he thinks that sincere learning of a culture is only possible by travel.
C．Because he believes travel is the only way which can mix up different cultures.
D．Because he wants to emphasize tourism's powerful effect on combating social problems.
单项选择题
From the first paragraph we learn that the travel industry __________.
A．has improved its revenue
B．is financially healthier than ever
C．is going to give money to aid poverty
D．is better able to help reduce poverty than ever
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