英语六级

单选题

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

参考答案：C进入在线模考
 What type of amber is probably the most valuable for genetic research?
推断题。题目问什么品种的琥珀对于基因研究最有价值，根据最后一句可知是能够提取DNA的。因此，正确答案是C。

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