单项选择题

A．From rocks in the mountain.
B．From the remains of ancient sea life.
C．From the soil under the sea.
D．From ancient trees.
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填空题
The six-banded armadillos eat vegetable because ______.
单项选择题
A．Because nationals are extremely strict in choosing journalists.B．Because nationals have already employed many journalists.C．Because nationals pay little salary.D．Because nationals seldom recruit inexperienced employee.
A．Because nationals are extremely strict in choosing journalists.
B．Because nationals have already employed many journalists.
C．Because nationals pay little salary.
D．Because nationals seldom recruit inexperienced employee.
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