西汉《周髀算经》提出__________定理,比西方早500年;南北朝数学家__________推算出的圆周率数值,精确

西汉《周髀算经》提出__________定理,比西方早500年;南北朝数学家__________推算出的圆周率数值,精确到小数点后第七位,比欧洲早1 000年。

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我国的旅游行业组织主要起的作用是__________、__________、__________、__________,

我国的旅游行业组织主要起的作用是__________、__________、__________、__________,并向国家旅游行政主管部门提供意见和咨询。

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Besides holding the wedding ceremony in the church, there ar

Besides holding the wedding ceremony in the church, there are various other choi

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The waitress showed me to the table we have booked this afte

The waitress showed me to the table we have booked this afternoon.A.invited B.to

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Last year, our company sold twice as many computers as our c

Last year, our company sold twice as many computers as our competitor.A.rival B.

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