练习1
Welcome to the Rock Hall of Fame.
My name is Marble.
Come and meet my friends. Can you tellwho they are?
I am a famous granite rock.
The Pilgrims stepped on me when theycame to America.
Who am I? Plymouth Rock.
I am white and tasty.
You can sprinkle me on your food.
Who am I? Salt.
练习2
I am used for money and jewelry.
Who am I? Gold.
I am melted to make glass.
Glassblowers make shapes from me.
Who am I? Sandstone.
You can write with me.
You can draw with me.
Who am I? Chalk.
I am flat enough to walk on.
I am flat enough to write on.
Who am I? Slate.
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