英语六级

单选题

A．Tropical insects.
B．Decayed leaves.
C．Tree resin.
D．Bird feathers.

参考答案：C进入在线模考
What is amber derived from?
细节题。题目问琥珀是如何形成的，根据Amber  is really  fossilized  tree resin．可知，琥珀其实是树脂化石。因此，正确答案为C。

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1

A．Its amber contains numerous fossils.
B．Its amber is the most durable.
C．Its amber is opaque.
D．It is the site of the oldest amber deposits.

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2

A．Amber mined from the Appalachian Mountains.
B．Amber with no imperfections.
C．Amber containing organic material.
D．Amber with no inclusions.

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3

A．The difficulties faced by the colonists.
B．The skill of military heroes.
C．The courage of one man.
D．The cause of the Revolutionary War.

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