贵宾服务人员为高端会员旅客提供里程查询、里程补登等会员服务。
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一般来说，贵宾服务从其预订机票的那一刻就已经开始了。
A. 对
B. 错
自然因素是旅游营销环境的内部环境因素。
A. 对
B. 错
购买力的戴奥不仅取决于收入的高低，还取决于居民档期储蓄和信贷的水平
A. 对
B. 错
Which of the following sentence(s) can help you figure out the meaning of “ambivalent”?
A.…this means that the public needs to have a basic understanding of science, so that it can make informed decisions and not leave them in the hands of experts.
B.It has come to expect the steady increase in the standard of living that new developments in science and technology have brought to continue.
C.But it also distrusts science because it doesn't understand it.
D.Both B and C.
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