单选题
Which of the following has most probably been discussed in the paragraph that goes before the passage?
A、
It is extremely important to develop tourism.
B、
Building roads and hotels is essential.
C、
Support facilities are highly necessary.
D、
Planning is of great importance to tourism.
【正确答案】
D
【答案解析】
文章一开始作者便指出计划在旅游业发展中的重要性。Without proper planning，tourism can cause problems．没有适当的计划，旅游业带来的将是麻烦。
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