必修第二册 Unit 4 Information Technology-【创新教程】2024高考英语总复习大一轮课时作业word（新教材，北师大版）

[必修第二册] UNIT 4　INFORMATION　TECHNOLOGY　[对应学生课时P232] Ⅰ.阅读理解 A (2023·潮州二模)Researchers have long sought ways to design air conditioning systems that can work without such greenhouse gases as HFCS, but none has come close to being a direct replacement.A small Irish company, however, now states to have come up with an answer. Exergyn, based in Dublin, has been working on a 60kw prototype(原型机)which not only avoids HFCS, but also has the benefit of having few moving parts.The system uses a material called a shape­memory alloy(合金)．SMAS, as they are known for short, have the unusual ability to return to a predetermined shape when heated.The SMAS produce heat when their shapes are changed by compression(压缩), and then absorb it when the pressure is gone and they return to their original shapes. Tony Ennis, Exergyn's chairman, says this method of cooling is not only more environmentally friendly than an HFCS system, but will also be less expensive to buy and 30%～40% cheaper to run.It will be lighter and smaller, too.As for reliability, he says the prototype's performance suggests the unit could operate for more than 40 years without a problem. When Dr.O'Toole, an expert in memory materials, cofounded Exergyn in 2012, his intention was to use the SMAS to create a system that would turn low grade waste heat into electricity.But the challenges presented by HFCS persuaded him that air conditioning would be a quicker way to bring the technology to market.Development is still continuing, but products may be only a few years away. He has not given up thoughts of producing electricity.He even wants to expand its application to other products, such as refrigerators and heat pumps to absorb heat from the ground for home heating.When time allows, Dr.O'Toole and his colleagues hope to get to work on those ideas, too. 1．What does the underlined word “predetermined” in Paragraph 2 probably mean? A．Original.　　　　 B．Different. C．Strange. D．Perfect. 2．Exergyn's air conditioner will be ________