2013年4月新gre考试:gre阅读模拟练习(4)
Comparison of the growth rings of ancient trees enables scientists to determine from a piece of timber the year in which the tree used for the timber was felled.Hence, by analyzing the growth rings in timber surviving from ancient buildings, archaeologists can determine precisely when those buildings were constructed. Which of the following is an assumption on which the argument depends? (A) The timber used for construction purposes in ancient times was made from very old trees. (B) The timber that was used in ancient building construct... [ 查看全文 ]2013年4月新gre考试:gre阅读模拟练习(4)的相关文章