【题目】 Business travel is greatly influenced by business related attractions such as________．

1、[单选题]Ecotourism is one of the most rapidly growing form of specialized travel in the West，with central American countries，such as Costa Rica，________the principal destinations at present．

• A、be 
• B、to be 
• C、being  
• D、been

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2、[单选题]In October 1970, the Rail Passenger Service Act ______.

• A、put into practice
• B、was put inot practice
• C、was practice
• D、practised

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3、[单选题]When going on holidays, which group will think more about their social status?

• A、Tourists taking holidays for educational purposes.
• B、People going on adventure holidays.
• C、Those travel for travel's sake.
• D、Those who travel for cultural events.

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4、[单选题]The sum of all incomes in a country is called the________ ．

• A、economic income
• B、productive income
• C、financial income
• D、national income

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5、[单选题]As the domestic tourism industry ____,competition will become increasingly ____.

• A、grows, intent
• B、develops, intent
• C、matures, intense
• D、strengthens, intense

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