英语翻译1:how long does it take the moon to travel once around the earth?A:20hours B:28days C:12months 2:how long does it take the earth to turn once on its axis?A:20hours B:12hours C:6hours 3:why is electrical wiring usually made fro copper?A:be

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英语翻译1:how long does it take the moon to travel once around the earth?A:20hours B:28days C:12months 2:how long does it take the earth to turn once on its axis?A:20hours B:12hours C:6hours 3:why is electrical wiring usually made fro copper?A:be
英语翻译
1:how long does it take the moon to travel once around the earth?A:20hours B:28days C:12months 2:how long does it take the earth to turn once on its axis?A:20hours B:12hours C:6hours 3:why is electrical wiring usually made fro copper?A:because copper is shiny B:because copper conducts electricity C:because copper is not magnetic

英语翻译1:how long does it take the moon to travel once around the earth?A:20hours B:28days C:12months 2:how long does it take the earth to turn once on its axis?A:20hours B:12hours C:6hours 3:why is electrical wiring usually made fro copper?A:be
1,月球绕地球一周多久?选b,28天 2,地球绕轴心转一圈(自转一周)多久?没选项,是24个小时,24hours 3,为什么铜通常用作导线?选b,铜导电 建议你通读《十万个为什么》