和田玉原石和岫玉原石的区别

Sure, here are a few examples of riddles:

1. I speak without a mouth and hear without ears. I have no body, but I come alive with the wind. What am I?

Answer: An echo

2. I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

Answer: A pencil lead

3. I am full of holes, but I can still hold water. What am I?

Answer: A sponge

I hope you find these examples helpful! Let me know if you need more.