谜语猜一猜

(整期优先)网络出版时间:2016-05-15
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小朋友们,快叫上你的小伙伴们,大家一起来猜谜语吧!看看谁是最聪明的小朋友噢~1Whatarefullwhentheyareusedandemptywhentheyareatrest(休息)?Hint:Theyprotertyourfeetfrombeinghurt.(保护)