WTO defines Tourism"tourism comprises the activities of persons traveling to and staying in places outside their usual ervironment for not more than ______ for leisure，business and other purpose".

WTO defines Tourism"tourism comprises the activities of persons traveling to and staying in places outside their usual ervironment for not more than ______ for leisure，business and other purpose".

A.one consecutive year

B.two consecutive years

C.6 consecutive months

D.18 consecutive months

正确答案是A