the abacus was invented in the sixth century in china 划线部分提问

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• the abacus was invented （in the sixth century in china） 对括号部分提问
• the abacus was invented in the sixth century in china 划线部分提问划线部分 in sixth century inChina
• the abacus was invented in the sixth century in china 划线部分提问
• the abacus was invented （in the sixth century in china） 对括号部分提问
• 1.（When I got to school）,I realized I had left my backpack at home 对括号里的提问_____ ＿＿＿ you _________ you had left your backpack at home?2.Chinese people invented the abacus in the sixth century改为被动语态
• 用简单英语解释下列句子（同义句）.1.It’s hard to tell what the words stand for these days.用简单英语解释下列句子（同义句）2.The team consists of 10 girls and 5 boys.3.The abacus is an ancient invention.4.The Indians invented the system of numbers.5.Most of my answers are accurate.按要求完成下列各句1.Mr Hill owned three restaurants in Shenzhen.对划线部分提问（three） 2.The invention of the zero helped people calculate more easily.对划线部分提问（calculate more easily）3.People wrote numbers in many different wa
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• 《关于X的一元二次方程-X²+（2k+1)X+2-k²=0有实数根,求k的取值范围.