历史文物是后人了解历史的第一手资料。“2011年度全国十大考古新发现”的评选结果4月13日下午在北京揭晓。河南郑州老奶奶庙遗址暨嵩山东南旧石器地点群等入选“十大新发现”。通过下图所示文物，我们可以了解_______朝代的历史。

A．夏朝

B．商朝

C．西周

D．春秋

Which one of the following alternatives represents the correct series of payments made by a typical 6 percent U. S. Treasury note with a par value of $100000 issued today with five years to maturityNumber and size of each intermediate payment Payment made at maturity（）①A. 9 semiannual payments of $3000 $100000 ②B. 4 annual payments of $6000$106000 ③C. 9 semiannual payments of $3000 $103000

A. ①

B. ②

C. ③