单项选择题According to the author, Chile's greatest attraction is______
单项选择题According to the passage, in WHICH area improvement is already under way
单项选择题Many of Chile's tourists used to come from EXCEPT______
单项选择题The objection to the development of Chile's tourism might be all EXCEPT that it______
单项选择题Who does the word Stakhanovites refers to according to the passage