第13题: [简答题]Marketing, in economics, is that part of the process of production and exchange that is concerned with the flow of goods and services from producer to consumer. 参考答案:经济学中的市场营销是指生产过程和产品交换，即产品和服务从生产者流向消费者的过程。
第24题: [单项选择]Why is there a line A. There is too little folk. B. They have just opened.. C. The employees are lazy. D. There are too few employees. 参考答案:D 答案解析:[听力原文]
M: The cafeteria is short handed so we’ll have to wait in line.
W: I know, they asked me to
第33题: [单项选择]塑料基托平均的厚度应是（） A. 1mm B. 2mm C. 0.5mm D. 0.5mm以下 E. 3mm 参考答案:B 答案解析:基托厚度应有一定的厚度保持其抗挠屈强度，以免受力时折断。塑料基托一般厚约2mm，基托边缘厚约2.5mm，并呈圆钝状。腭侧基托可稍薄，必要时做出腭皱形状。铸造基托厚约0.5mm。
