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1994年，世界旅游组织为世界旅游日提出的主题口号是：“高质量的员工，高质量的服务，高质量的旅游。”这一口号说明，高质量的员工是高质量旅游的_____。
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直叙是导游人员根据事物的_____逐步展开、逐步深入的一种讲解形式。
导游人员与游客之间进行意见沟通的重要前提是_____。
作为导游语言特点之一的“活”指的是导游语言_____具有灵活多变性。
The steady hum of school heating systems and air-conditioners can mean lower test scores for many young students, found a new study. The finding adds to growing evidence that classroom noises【C1】______ with learning. Plenty of studies have demonstrated the distracting【C2】______of noise in the classroom. In louder rooms, kids have more trouble hearing the teacher and become easily distracted,【C3】______when they are reading to themselves. Schools【C4】______ airports also report lower test scores than schools that are not affected by airplane noise. In one study, German students started scoring better on reading and vocabulary tests after a nearby airport【C5】______. Researchers were also interested in less【C6】______ sounds like the general buzz of basic mechanical systems. It was【C7】______that kids who spent all day in classrooms with such noises【C8】______ to score lower on standard reading comprehension tests. But math scores didnt【C9】______ with noise levels, possibly because teachers use more【C10】______ when theyre teaching math than when theyre teaching words. 【C11】______, lots of background noise sets kids up for problems. Studies have shown that kids make more noise in louder rooms.【C12】______by the scraping of chairs, the hum of the heating system,【C13】______the voices of other kids competing to be heard, some students【C14】______have a particularly hard time hearing【C15】______ the teacher is saying. And its not that theyre lazy or using noise as an【C16】______. Young brains have a much harder time【C17】______a signal from the background than mature, adult brains do. Along with【C18】______work, the new findings suggest the【C19】______ for enforcement of ANSIs standards. Despite an endless list of budgetary【C20】______, schools might have to put quiet at the top of their to-do lists.
【C1】
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