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What caused the scientists of Sydney University to conduct the investigation？
A．A chance encounter with music-playing cars.
B．A proposal by the European Congress of Psychology.
C．An experience of traveling in music-playing vehicles.
D．The growing number of traffic accidents.
答案
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A．diligence
B．vain
C．vigor
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第2题
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第3题
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B．Tourists.
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第5题
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第7题
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第8题
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第9题
What caused the earlier traffic problem？
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B．Highway construction
C．Terrible driving conditions due to storm
D．Everyone leaving the city for the long weekend
第10题
-- What caused him to quit the job？ -- ______ behind the counter ail day, facing strange angry faces.
A．Stand
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C．He had to stand
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