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360P
根据规律计算下面的题目1/2+1/6+1/12+1/20+1/30+1/42
人教版五年级下册251/367
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App02:55
App04:19
App03:40
App01:50
App03:00
App04:25
App02:02
App07:46
App02:46
App05:23
App06:40
App02:20
App06:08
App02:23
App03:51
App03:44
App05:10
App04:16
App03:11
App02:10
App02:13
App04:33
App02:52
App02:53
App06:10
App02:54
App01:02
App04:29
App02:02
App11:43打开App观看
