有三种不同情形:1克黄金= 1只羊;一头牛先换5克黄金货币,再用黄金货币换回农具;1克黄金=184人民币元。对此下列说法正确的有 ①黄金都充当了一般等价物 ②人民币执行了黄金货币的价值尺度、流通手段等职能 ③第二种情形下的黄金与第一、第三种情形的黄金具有本质上的区别 ④黄金是商品交换过程的产物
---Have you heard of the Zhengzhou-Xi’an passenger Dedicated Line ___ can shorten 5 hours’ travel time between the two cities ? ---Of course . A. where B. when C which D. who
—Paul invited us to take part in a party tomorrow evening. —________.Is tomorrow his birthday?
—How old is your daughter? —_________. We had a special party for her _________ birthday last week.
—Are you going to Beijing by plane? —It’s fast, but expensive, so I am not sure. I _______ take a train there.
A big earthquake ___ in Haiti ___January 12th 2010 and many people died.