20 12-20 13 "Mathematics Special Edition of Juvenile Intelligence Development Newspaper" answered in detail PS: You need a teacher's gold card.
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20 13-20 14 "Mathematics News" newspaper gives a detailed answer to the student edition.
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20 13-20 14 school year first semester newspaper detailed answer release schedule.
Period1-45-89-1213-1617-2021-26 (level 9)
Date 2013.9.26 2013.18 2013.1.8 201.
PS: Now the school has just started, and it has not been updated for the time being. In a few days, it will be the 20 13-20 14 school year.
Hope to adopt! Thank you.