问题如下图：难道money supply不需要under control？
选项：
A. 
B. 
C. 
解释：
NO.PZ2016010801000072 问题如下 Jim, a junior economist, says “In comparison with barter transaction, the use of money is more efficient a meum of exchange. However, it ha saantage thmoney supply shoulunr control, therefore a centrbank is necessary for economy.” Is Jim correct? A.He is incorreabout comparison with barter transaction. B.He is incorreabout saantage of money transaction. C.Correct. B is correct. Meum of exchange is one of the primary functions of money. It is wily accepteto pfor goo anservianmore efficient thbarter transaction. The existenof centrbank is in recent centuries anit is not the saantage of money transaction.考点货币职能和中央银行解析交换媒介是货币的主要功能之一。人们普遍接受用现金支付货物和服务，这比以物易物更有效。中央银行的存在是近几个世纪的事，它不是货币交易的弊端。相反，其效管理可以加速交易的有效性。 However, it ha saantage thmoney supply shoulunr control, therefore a centrbank is necessary for economy.货币供给不能自由变动，必须要被管控，这确实是一个saantage呀；因为它需要额外的管控来保持物价稳定和货币量合适。看了关于这道题的其他提问的回答，感觉都非常牵强，或者有些答非所问，没太明白。
NO.PZ2016010801000072 如题干
NO.PZ2016010801000072 He is incorreabout saantage of money transaction. Correct. B is correct. Meum of exchange is one of the primary functions of money. It is wily accepteto pfor goo anservianmore efficient thbarter transaction. The existenof centrbank is in recent centuries anit is not the saantage of money transaction. 考点货币职能和中央银行 解析交换媒介是货币的主要功能之一。人们普遍接受用现金支付货物和服务，这比以物易物更有效。中央银行的存在是近几个世纪的事，它不是货币交易的弊端。相反，其效管理可以加速交易的有效性。 货币的弊端的需要被控制，所以银行是必须存在的。题目也没说，银行存在是弊端啊。老外都这么思考问题吗？又说这是货币交货的缺点。
He is incorreabout saantage of money transaction. Correct. B is correct. Meum of exchange is one of the primary functions of money. It is wily accepteto pfor goo anservianmore efficient thbarter transaction. The existenof centrbank is in recent centuries anit is not the saantage of money transaction. 考点货币职能和中央银行 解析交换媒介是货币的主要功能之一。人们普遍接受用现金支付货物和服务，这比以物易物更有效。中央银行的存在是近几个世纪的事，它不是货币交易的弊端。相反，其效管理可以加速交易的有效性。语法上看“it hsaantage...”指的不是央行啊，指的是 the use of money，因此得出央行是必要的。然而中却理解成了央行的缺点？？可否将该题目重新审查一下？谢谢。
“In comparison with barter transaction, the use of money is more efficient a meum of exchange. However, it ha saantage thmoney supply shoulunr control, therefore a centrbank is necessary for economy.” 感觉答案的还是有点牵强。“ it ha saantage thmoney supply shoulunr control”，这里的it根据上下文不是指中央银行，应该是代替上文的主语“the use of money”。所以并不觉得这句话不对。
