有口井7米深,有个蜗牛从井底往上爬,白天爬3米,晚上往下坠2米,问蜗牛几天能从井里爬出来?我是这样想的:白天向上三米,晚上再下坠2米,故每天可以向上1米,第五天的晚上它可以到达7米的地
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/10 22:37:30
![有口井7米深,有个蜗牛从井底往上爬,白天爬3米,晚上往下坠2米,问蜗牛几天能从井里爬出来?我是这样想的:白天向上三米,晚上再下坠2米,故每天可以向上1米,第五天的晚上它可以到达7米的地](/uploads/image/z/5549179-67-9.jpg?t=%E6%9C%89%E5%8F%A3%E4%BA%957%E7%B1%B3%E6%B7%B1%2C%E6%9C%89%E4%B8%AA%E8%9C%97%E7%89%9B%E4%BB%8E%E4%BA%95%E5%BA%95%E5%BE%80%E4%B8%8A%E7%88%AC%2C%E7%99%BD%E5%A4%A9%E7%88%AC3%E7%B1%B3%2C%E6%99%9A%E4%B8%8A%E5%BE%80%E4%B8%8B%E5%9D%A02%E7%B1%B3%2C%E9%97%AE%E8%9C%97%E7%89%9B%E5%87%A0%E5%A4%A9%E8%83%BD%E4%BB%8E%E4%BA%95%E9%87%8C%E7%88%AC%E5%87%BA%E6%9D%A5%3F%E6%88%91%E6%98%AF%E8%BF%99%E6%A0%B7%E6%83%B3%E7%9A%84%EF%BC%9A%E7%99%BD%E5%A4%A9%E5%90%91%E4%B8%8A%E4%B8%89%E7%B1%B3%2C%E6%99%9A%E4%B8%8A%E5%86%8D%E4%B8%8B%E5%9D%A02%E7%B1%B3%2C%E6%95%85%E6%AF%8F%E5%A4%A9%E5%8F%AF%E4%BB%A5%E5%90%91%E4%B8%8A1%E7%B1%B3%2C%E7%AC%AC%E4%BA%94%E5%A4%A9%E7%9A%84%E6%99%9A%E4%B8%8A%E5%AE%83%E5%8F%AF%E4%BB%A5%E5%88%B0%E8%BE%BE7%E7%B1%B3%E7%9A%84%E5%9C%B0)
xUNV$
0J|ө
RhyIĐk: ءĹ|>е}Й}J||mrtsk
тsyo.%\{WSb[YHl{NBrJCvzS/qIYkAMI2
3jOxp%^+}7(,_OT<v#͜a[
?Go'|T(IȘ։>%?w=PShr AaNaz"SvݛӴ:0KŒ>lS60iڵ{&K%'6c(L (>AJĻ(X/<4U+z
Ǐlxlw%|\v'Ƴ-u\uMJ'P4D% 8 mՙCϢͥ}M۴$aaiL*Q LNkOWAnx%|k?A238IEY'y[[O_W^lx~e?ZX-G#˟M( EM'p^4n