磕头求!谁知道这些英语谜语的谜底啊!磕头求!1.itislikeabird,buthasnofeather.itislikeadragonfly,buthasnolegs.itcanflyinthesky,anrunontheground.whatisit?2.whatisitthatwhenoncelost,youcanneverfindagain?

Question

磕头求!谁知道这些英语谜语的谜底啊!磕头求!
1.it is like a bird,but has no feather.it is like a dragonfly,but has no legs.it can fly in the sky,an run on the ground.what is it?
2.what is it that when once lost,you can never find again?
3.it is a small picture with teeth around it .it has no feet,but it can travel aroud the world.what is it
4.i have cities but no houses;forests but nuo trees;rivers without water.what am i
可不可以加上汉语解释．．．

Answer 1

1.plane
2.time
3.gas
4.a poor man(最后一个有点难,我不肯定答案）