Vacation is coming. He is thinking about .
A：where he goes
B：where to go
C：where is he going to
D：where going
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近年来，旅游者的追求已从“3S”(sun、sea、sand)转移到“3N”(Nature：自然；Nostal-gia：怀乡；Nirvana：涅槃)，下列旅游方式最能体现这一变化趋势的是（ ）
