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问题 填空题

在合并同类项时，把同类项的______相加，所得的结果作为系数，字母和字母的______不变．解题过程中，建议同学们先用记号标注同类项，再分别进行合并，熟练后可不标注．

答案

在合并同类项时，把同类项的系数相加，所得的结果作为系数，字母和字母的指数不变．

故答案为系数，指数．

单项选择题

直接激励中间商，提高其积极性的形式中不包括(　 　　)

A．帮助中间商进行零售终端管理

B．开展促销活动

C．返利政策

D．价格折扣
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单项选择题

"What does the middleman do but add to the price of goods in the shops " Such remarks are aimed at the intermediate operations between manufacturers and final customers. This practice usually attracts a lot of attention from the public and the press and the operation most talked about is what is often called wholesaling.The wholesaler buys goods in large quantities from the manufacturers and sells them in smaller parcels to retailers, and for this service his selling price to the retailer is raised several percent higher. But his job is made more difficult by retail demand not necessarily running level with manufacturers’’ production. Because he adjusts or regulates the flow of goods by holding stock until required, he frees the manufacturer, to some extent, from the effect on production of changing demand and having to bear the whole risk.The manufacturer can then keep up a steady production flow, and the retailer has no need to hold heavy stocks, who can call on the wholesaler for supplies any time. This wholesale function is like that of a valve in a water pipe. The middleman also bears part of the risk that would otherwise fall on the manufacturer and also the retailer.The wholesaler provides a purely commercial service, for which he is too well rewarded. But the point that is missed by many people is that the wholesaler is not just someone adding to the cost of goods. It is true one could eliminate the wholesaler but one would still be left with his function: that of making sure that goods find their way to the people who want them.

The author quite possibly believes that the function of the wholesaler is________.

A．good but too costly

B．necessary but harmful

C．removable but necessary

D．acceptable but unnecessary
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