NO.PZ2015122801000061
问题如下：
Financial intermediaries which do not trade directly with clients, they find buyers for and sellers of securities to execute customer orders instead. They are best described as:
选项：
A.brokers.
B.investment bankers.
C.dealers.
解释：
A is correct.
Brokers help their clients buy and sell securities by finding counterparties to trades in a cost efficient manner. Investment bankers provide advice to clients and help them arrange transactions such as IPO and debt offerings. Dealers facilitate trading by buying for or selling from their own inventories, provide liquidity in the market.
A是正确的。
证券经纪商一般帮助客户以最优价格原则寻找市场上的交易对手方。所以A正确
投资银行给客户提供建议并且帮助客户处理IPO或是债券的承销。（如果是包销制，投行是和客户直接交易的）所以B错。
做市商一般直接持有证券的存货，通过直接和客户做交易赚取差价来赚钱。所以C错。
投行不是说了也是让交易双方直接交易的吗？
