问题描述：
What am
1.You can feel me but you can't see me.I am very strong and work as a pump.
2.I am on your head.I feel soft.I can be long or short.black or brown.
3.I connect your hand with the rest of your arm.I sometimes wear a watch.
4.If you break one it hurts.You have 206 of them in your body.
5.I'm in the middle of your face.You can smell things with me.
1.You can feel me but you can't see me.I am very strong and work as a pump.
2.I am on your head.I feel soft.I can be long or short.black or brown.
3.I connect your hand with the rest of your arm.I sometimes wear a watch.
4.If you break one it hurts.You have 206 of them in your body.
5.I'm in the middle of your face.You can smell things with me.
问题解答：
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