单项选择题

A．Scientists have studied them for centuries.
B．They were meat eating as well as plant eating.
C．They wandered the earth for millions of years.
D．They lived on land, in the sea, and in the sky.
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单项选择题
A．Repair the other door.B．Visit some ruins.C．Have an outdoor party.D．Catch the Saturday train.
A．Repair the other door.
B．Visit some ruins.
C．Have an outdoor party.
D．Catch the Saturday train.
单项选择题
A．With the reader himself in the story.B．Telling stories about the reader himself.C．Printed with standard things.D．Published with the help of computer,
A．With the reader himself in the story.
B．Telling stories about the reader himself.
C．Printed with standard things.
D．Published with the help of computer,
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