文档介绍：芒果备注:比起BC级要求看的文章,这篇要求A级考生看的文章要有点难度。这篇文章考的语法点不多,主要考察对全文的理解,这就要求考生对整篇文章要非常熟练。这篇文章,15个题目,有7个题目考的是名词,大部分要求从上下文理解后,才能得出答案。文章的术语比较多,需要认得单词。要找出选项的答案,重点是要观察前后文的含义,综合理解,仅靠语法知识,会发现题目有点难度。
考试的时候也不排除会修改些语法的选项,这里芒果给大家粗略点下,还需要大家自己对文章进行学习理解。
红色为教材选项
绿色为可能替换选项
第十三篇 Better Solar Energy Systems: More Heat, More Light更有效的太阳能系统:更多热量,更强灯光
Solar photovoltaic thermal energy systems, or PVTs, generate(动词,表示产生) both heat and electricity, but __1__ now(表示直到现在) they haven’t been very good at the heat-generating pared to(与……比较) a stand-alone solar thermal collector. That’s because they operate(动词,表示工作) at low temperatures to cool crystalline silicon solar cells, which lets the silicon generate more __2__ but isn’t a very efficient(形容词,表示有效的) way to gather heat.
太阳能光伏热能系统,也叫PVT,能够生成热量和电能。与太阳热能单机收集器相比,传统太阳能光伏热能系统在转换热能方面效率不是很高。原因是,为了使晶体硅太阳能电池冷却,该系统在低温下工作。因此,硅体能产出更多的电能,却不能有效地产生热量。
That’s a problem of __3_ . Good solar hot-water systems can harvest much more energy than a solar-electric system at a substantially lower __4__(at cost成本方面). And it,s also a space problem(名词,空间问题,注意space):photovoltaic cells can take up(词组,表示占据) all the space on the roof, leaving(动词,留给) little room for thermal applications.
In a pair of studies(量词,一项研究), Joshua Pearce, an associate professor of materials science and engineering, has devised a __5__ in the form of a better PVT made with a different kind of silicon. His resear