Good afternoon, everyone. My topic for today is “Early money”. I’m going to t___1____

you something about money u ___2_____in the early days. To tell you the truth, we know little about h___3___ early people came to use money, but we do know some of the things w____4___ have been used a___5___ money. In early times in some European c___6____ salt was very difficult to g___7___.  It was used as money. In some p____8____ of Asia, tea was used for money. The American Indians used nuts and other things. Perhaps the most c_____9____ money of all was an animal of some kind. In some places today, cows are still used as a k___10_____ of money. So you see, things highly valued (价值) by everybody may serve as money. The Chinese were the first p___11____ to use coins as money. Oh, here are some coins of the p____12_____. You can come over and have a look.

关于强制性产品认证，以下表述错误的是______。

A．国家认证可监督管理委员会主管全国认证认可工作
B．认证标志的名称为“中国强制性认证”
C．认证范围内的商品应加贴“CCC”标志
D．只有强制性认证产品的生产者方可提出产品认证申请