And help exchanges between Western and Eastern civilizations. A.Poland
B.Kazakhstan
C.Vietnam
D.Nepal
A、a civilization of ancient North Africa, concentrated along the lower reaches of the Nile River
B、a major north-flowing river in northeastern Africa, and is the longest river in Africa
C、together with the Tigris, it is one of the two defining rivers of Mesopotamia
D、the first ancient empire of Mesopotamia
Different trees are mentioned in Paragraph Two as examples to
A.set a criterion as to what are ancient trees.
B.introduce the rich species of ancient trees.
C.compare different kinds of ancient trees.
D.explain the definition of ancient trees.
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