单选题 FLOOR BROKERS, when a commission broker has (56) that he cannot execute personally because of their number or because of the activity of the market, he engages the services of a floor broker. These floor brokers were once referred to as $ 2 brokers, because at one time they charged a fee of $2 per (57) ; today this fee is (58) higher. Commissions are shared on these orders. It is easy to see that smaller commission brokers are especially prone to (59) by an influx of orders. The floor broker, as a freelance operator, provides a (60) function in ensuring that the exchange's business is conducted rapidly and efficiently.

单选题 A. commands B. instructions C. arrangements D. orders
【正确答案】 D
【答案解析】command命令，但这是一种带有强制性的命令，一般来说都是指上级对下级的命令。instruction指示，用法说明，一般来说都是指产品用法说明，用法指示。arrangement是指“安排，部署”。order是指“指令”。文中是指经纪人收到的客户的交易指令。
单选题 A. business B. deal C. transaction D. trade
【正确答案】 C
【答案解析】business业务，生意，交易。deal是指“交易”，但一般都用在非正式的场合或口语中。transaction交易，并且指具体某一笔交易。trade买卖，交易，但它是一个抽象的概念，一般来说都是指大额的或全部的。
单选题 A. much B. considerably C. incredulously D. incredibly
【正确答案】 B
【答案解析】much非常。considerably相当(大，多)地，可观地。incredulously怀疑地，不可轻信地。incredibly难以置信地，不可思议地。文中指的是这种费用已经相当高了。
单选题 A. being swamped B. swamp C. be swamped D. have been swamped
【正确答案】 A
【答案解析】be prone to doing sth．是习惯用法，另外要表示一种被动情况。
单选题 A. outstanding B. important C. significant D. vital
【正确答案】 D
【答案解析】本题中四个选项中的四个词均可以表示“重要的，显著的”，但是从上下文可以看出，作者在这里想要说明的是the floor broker具有至关重要的功能，vital更进一步表达了“生死攸关的，重大的，至关重要的，所必需的”的意思。