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1、Inancienttimes,peoplenearlyallcountedintens.(对intens提问)1、peopleallinancienttimes?2、TheIndiansfirstinvebtedthe1to9systemofnumbers.(对1to9提问)2、systemofnumberstheIndians

题目详情
1、In ancient times,people nearly all counted in tens.(对in tens提问)
1、_____ _____people all _____in ancient times?
2、The Indians first invebted the 1 to 9 system of numbers.(对1 to 9提问)
2、_____system of numbers _____the Indians first _____.
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答案和解析
1.How did people all count in ancient times?
2.What system of numbers did the Indians first invebte?