Period Three Developing ideas 【课前自主探究】 Task 1: Fast Reading 1.voices 2.purposes/aims 3.positive 4.criticism 5.comment Task 2: Careful Reading 1—4 DBCC Task 3: Micro-writing 1.the 2.responsible 3.examples 4.originally 5.causing 6.who 7.influencing 8.determined 9. and 10.to be reread/rereading 【语言知识梳理】 词汇点睛 1.(1)①smoking ②from (2)(should) be banned/forbidden/prohibited 2.(1)①puzzled; puzzling ②a (2)①looking puzzled ②scientists are still puzzled about 3.(1)with (2)①trembling hands ②trembling with 4.(1)awareness (2)①are/become really aware of ②I was/became aware that 5.①will stand by ②stand up ③stand out 6.(1)①passionate ②for (2)passionate about the project 句型透视 (1)①needs ②but (2)not your talent butPeriod Three Developing ideas Ⅰ.1.thorough 2.swept 3.launch 4.reputation 5.backyard Ⅱ.1.precisely 2.stillness 3.puzzled 4.trembling 5.determined 6.gently 7.to take 8.elegance 9.to 10.from Ⅲ.1.dozens/scores of 2.stand by 3.or so 4.was passionate about 5.spoke of 6.was/became aware of Ⅳ.1.Weak though/as she looks 2.causing passers-by to smile 3.but ask what you can do for your country 4.Surprised and overjoyed Ⅴ.【文章大意】 本文是一篇说明文。文章主要介绍了聚合物科学家如何致力于解决塑料废物问题,重新设计聚合物的结构以实现其可回收性。 1.C 段落大意题。根据文章第二段“In a world set up for disposable (一次性的) items, durability is no longer a design feature but rather a design drawback. Imagine if half the plastics used today were recyclable through twice as many processes as they are now. Also conventional recycling requires careful sorting of all the collected materials, which can be challenging with so many different plastics.”(在一次性物品盛行的世界中,耐用性不再是一个设计特征,而是一个设计缺陷。想象一下,如果今天使用的塑料中有一半可以通过两倍于现在的工艺流程进行回收。传统的回收也需要对所有收集到的材料进行仔细的分类,这对于这么多不同的塑料来说是具有挑战性的。)可知,文章第二段主要讲述的是关于塑料回收的挑战。故选C。 2.D 细节理解题。根据文章第三段“By changing how much of each polymer type goes into the multiblock polymer, our team produced a wide range of materials with properties that covered all polyolefin types.”(通过改变多嵌段聚合物中每种聚合物的含量,我们的团队生产出了各种各样的材料,其性能涵盖了所有类型的聚烯烃。)可知,生产多种多嵌段聚合物的一个关键因素是调整两种聚合物的含量。故选D。 3.B 细节理解题。根据文章最后一段“Using the same strategy but by adding hydrogen, we could disconnect the polymers back into their building blocks and easily separate them to use again. When we made new polymers out of these recycled plastics, they performed just as well as the original materials even after several rounds of chemical recycling.”可知,多嵌段聚合物可以通过添加氢的方式被分离出来再次使用。故选B。 4.A 主旨大意题。根据文章第一段“People have come to understand the enormous impacts—beneficial as well as harmful— plastics have on human lives and the environment. As polymer ... ...
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