【题目】 【翻译】The future of human beings is bound up with the development of life science.

1、[单选题]_______ came into service in the early 1980s.

• A、The comet
• B、The oeing 747
• C、The oeing 757
• D、The oeing 767

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2、[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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3、[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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4、[单选题]Airlines will________ to allow for the high number of________ ，but must exercise caution．

• A、overbook, independent travelers 
• B、overbook, no-shows
• C、underbook，business travelers 
• D、underbook，repeat travelers

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5、[单选题]Since China opened to the outside world in ________，the number of hotels has increased considerably．

• A、1970 
• B、1978 
• C、1980 
• D、1997

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