We found some precious jars and vases in an ancient tomb, you know , are valuable.
A. even the pieces of which
B. which even pieces
C. even the pieces of them
D. whose even pieces
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(答案→)A. even the pieces of which
B. which even pieces
C. even the pieces of them
D. whose even pieces
解析：这题考查非限制性定语从句，名词+of+which=whose+名词，even是副词，修饰后面的句子：句意是：我们在古代的坟墓里发现一些珍贵的坛坛罐罐，你知道，甚至他们的碎片也是很有价值的。选A。