题目

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 You might dream of fluency in this or that language, and maybe you've already achieved fluency in a foreign language.. Fluency, like all abstract terms, has no universal meaning. Each individual must determine what the term means.. Perfect fluency means knowing every word you encounter, speaking quickly, clearly and easily and having no accent.. You aren't familiar with every word of your native language, and sometimes you have to search for the right word, even in your m下列反应符合下图图示的是 (     )A．铝片与盐酸的反应B．Ba(OH)2·8H2O与NH4Cl晶体的反应C．酸碱中和反应D．甲烷在氧气中的燃烧反应