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一个花匠正在配制插花。可供配制的花共有苍兰、玫瑰、百合、牡丹、海棠和秋菊六个品种。一件合格的插花须由两种以上的花组成，同时须满足以下条件：如果有苍兰，则不能有秋菊；如果有海棠，则不能有秋菊；如果有牡丹，则必须有秋菊，并且秋菊的数量必须和牡丹一样多；如果有玫瑰，则必须有海棠，并且海棠的数量是玫瑰的2倍；如果有苍兰，则苍兰的数量必须大于所用到的其他花的数量的总和。 以下各项配制都不是一件合格的插花。其中哪项，只要去掉其中某种花的一部分或全部，就可以成为一件合格的配制？（）
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Business communicationOne of the most important features in any business is communication. Good communications are required at all stages of the business process. Businesses employ, and are owned and run by, various groups of people. Workers, directors and shareholders are three important groups closely (21) with a business. Other influential groups include customers, suppliers and the government.Communication (22) between these groups and the individuals who make up the groups. Within (23) companies internal communications occur at, and between the various levels. Directors communicate with one another concerning the company’s overall strategy. They (24) managers of their plans, and the, managers then communicate with the other employees. (25) are conducted concerning pay and working conditions. Managers communicate decisions and orders and try to (26) morale and motivation through good communication. Employees (27) communicate with each other, for example over production and wages.External communication occurs when a company’s directors or employees communicate with those individuals and groups who (28) with the company. Shareholders receive copies of the company’s annual accounts, together with the (29) of the Chairman and Directors. Government departments require statistical and financial information from the company. An advertising agency is (30) about the company’s advertising policies. Customers need to know if goods have not been dispatched and suppliers contacted if their goods have not been delivered. Reliable and effective communication is one of the key elements which leads to efficient management of a company. 24（）
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