（通用版）2019版高考英语一轮复习 Unit 3 Inventors and inventions高考拆组训练 新人教版选修8.doc

1、【 精品教育资源文库 】 Unit 3 Inventors and inventions 练 (一 ) 语言知识运用组块专练 练准度 (限时： 25 分钟 ) . 完形填空 Resealable (可密封的 ) plastic bags sometimes called by a brand name, such as Ziploc are those little clear plastic bags you use to keep your sandwiches and chips fresh. They usually have some sort of sealing mechani

2、sm, like a plastic zipper, which allows you to seal the bag to keep _1_ out. Keeping air away from _2_ allows them to stay fresh longer. Bacteria and other organisms in the air will _3_ food items over time if allowed to come into _4_ with them. Sealed plastic bags keep these organisms _5_ getting t

3、o your food. Resealable plastic bags can be used for more than just _6_ sandwiches, chips and snacks to school for lunch. They re also used to keep leftovers _7_ in the refrigerator. Many people also use them to _8_ food in the freezer for use in the future. The _9_ of the resealable plastic bag sta

4、rted out in 1951 at a company named Flexigrip, Inc. Flexigrip _10_ a plastic zipper from patents which was bought from _11_ Borge Madsen. These zippers were _12_ used as parts of binders and briefcases. Over time, _13_， plastic zipper bags were developed. Eventually, in 1968, Dow Chemical Company _1

5、4_ to market its Ziploc brand of resealable plastic bags to grocery stores. They turned out to be very _15_. Today, these types of bags are _16_ in many different sizes and styles, from snack and sandwich bags to craft and freezer bags. You can also buy bags with expandable bottoms that _17_ on thei

6、r own. Some bags even allow you to _18_ food in the microwave! However, now many people try to use _19_ plastic because of its effect on the environment. So manufacturers of resealable plastic bags have taken _20_ to become more environmentally friendly. 语篇解读：本文主要 介绍了可密封塑料袋的用途及发展史。同时指出，为了减少污染，这种塑料袋的

7、生产厂家也采取措施以使他们的产品更加环保。 1 A.air B water 【 精品教育资源文库 】 C dust D fog 解析：选 A 由第二段开头的 “Keeping air away” 可知，此处指把空气阻挡在外面。 2 A.plants B containers C bags D foods 解析：选 D 根据下文中的 “Bacteria and other organisms in the air will _ 3_ food items over time” 可知，此处指让空气和食物隔离，以便食物保鲜的时间长些，故选foods。 3 A.bring in B take out

8、 C break down D deal with 解析：选 C 空气中细菌和其他微生物会分解食物导致食物变质。 break down 意为 “ 分解 ” 。 4 A.relation B contact C connection D contract 解析：选 B 如果细菌和其他微生物与食物接触，食物将会很快变质。 contact 意为 “ 接触 ” ； relation 意为 “ 关系 ” ； connection 意为 “ 连接 ” ； contract 意为 “ 合同 ” 。 5 A.from B against C through D beyond 解析：选 A keep . fro

9、m .为固定搭配，意为 “ 阻止 ?” 。 6 A.following B presenting C supplying D transporting 解析：选 D 下文中的 “to school for lunch” 说明，此处指携带食物到学校。 7 A.wet B fresh C thin D hard 解析：选 B 根据句中的 “in the refrigerator” 及生活常识可知，它们也被用来保持剩余的食物新鲜。 8 A.store B cook C share D produce 解析：选 A 本段主要介绍可密封塑料袋能用来保存食物，因此这里指储存食物。 9 A.result B

10、 humour C history D success 解析：选 C 根据下文中的 “started out in 1951 at a company named Flexigrip, Inc”可知，此处提到这 种可密封塑料袋的历史。 10 A.discovered B developed 【 精品教育资源文库 】 C spread D approved 解析：选 B 此处表示买了专利以后，研发了塑料拉链。 11 A.writer B teacher C doctor D inventor 解析：选 D 句中 patents 说明，博尔格 马森是一位发明家。 12 A.eventually

11、B frequently C originally D naturally 解析：选 C 根据下文中的 “Over time, _ 13_， plastic zipper bags were developed.” 可知，此处谈的是塑料拉链袋的最初情况，故选 originally。 eventually 意为 “ 终于 ” 。 13 A.however B besides C therefore D otherwise 解析：选 A 最初，塑料拉链袋的用途很少，后来它得到了发展。此处表示转折。 14 A.agreed B began C promised D preferred 解析：选 B

12、最后，陶氏化学公司开始将塑料拉链袋投入市场。 15 A.necessary B famous C funny D popular 解析：选 D 文章介绍了这种塑料袋的发展。它也很受欢迎。 16 A.precious B expensive C available D fashionable 解析：选 C 根据 “in many different sizes and styles, from snack and sandwich bags to craft and freezer bags” 可知，这些袋子有很多不同的尺寸和样式，在很多地方可以使用。 17 A.move B stand C f

13、loat D remain 解析：选 B 根据句中的 “bags with expandable bottoms” 可知，袋子底部可伸展，因此它能竖起来。 18 A.heat B taste C find D purchase 解析：选 A 根据 “in the microwave” 可知，把食物放入微波炉中，为的是给食物加热。 19 A.more B smaller 【 精品教育资源文库 】 C larger D less 解析：选 D 根据 “because of its eff ect on the environment” 可知，人们现在尽量少使用塑料袋。 20 A.chances

14、B steps C photos D orders 解析：选 B 他们已经采取措施以使他们的产品更加环保。 take steps 意为 “ 采取措施 ” 。 . 语法填空 Scientists have discovered that _1_ (stay) in the cold could help us lose weight. Researchers at the University of California found that exposure to the cold increases levels of a protein that helps form brown fat

15、the type of fat that produces heat and keeps us warm. Brown fat burns energy, _2_ helps us lose weight. White fat stores extra energy, which results _3_ weight gain. The researchers said that because air conditioning and heating give us constant, _4_ (comfort) temperatures, our body s need for brown

16、 fat has decreased. They found that, “Outdoor workers in northern Finland who _5_ (expose) to cold temperature have _6_ significant amount of brown fat when _7_ (compare) to sameaged indoor workers.” The research was conducted on two different control groups of mice. _8_ group was injected with the

17、protein that helps create brown fat. This group later gained 30% less weight after both groups were fed highfat diets. The researchers say this could be good news in the fight against obesity (肥胖症 ). People who are obese have _9_ (low) levels of brown fat than thinner people. Head researcher Hei Soo

18、k Sul said, “This protein could become an important target for research into the treatment and prevention of obesity and obesityrelated diseases.” She added, “If you can somehow increase levels of this protein, you could _10_ (possible) lose more weight even if eating the same amount of food.” 语篇解读：

19、科学家发现在寒冷的环境下有助于减肥。 1 staying 本句是 “ 主句宾语从句 ” 结构，从句中 could help 是谓语部分，故 stay是非谓语动词，作主语应用动名词形式表示状态。 2 which 空处引导非限制性定语从句，并在从句中作主语，用关系代词 which 指代前句话的内容。 3 in result in“ 导致，造成 ” 。故填 in。 4 comfortable 此处是和 constant 并列作 temperatures 的定语，故用形容词形式。 【 精品教育资源文库 】 5 are exposed expose 是及物动词，句中没有宾语，判断用被动形式。 be e

20、xposed to “ 暴露在 ? 之下 ” ，根据主谓一致原则，填 are exposed。 6 a a significant amount of“ 大量的 ” 。故填 a。 7 compared 此处是 “ 连词分词 ” 结构， compare 和句子主语 outdoor workers 之间是被动关系，用过去分词，填 compared。 8 One 从上文内容可知此处指两组中的一组，因位于句首，故填 One。 9 lower 修饰名词 levels，用形容词，根据句中 than 可知此处用比较级，故填 lower。 10 possibly 修饰动词 lose 用副词形式，故填 poss

21、ibly。 练 (二 ) 主观题强化增分专练 练规范 (限时： 45 分钟 ) . 语法填空 As a famous productive poet, Lu You from the Song Dynasty wrote more than 20,000 poems in his lifetime. The reason _1_ Lu You could write so much poetry was that he was talented, but more _2_ (important), he also lived a long life. According to historical records, he lived to be 85 years old, the _3_ (long) living poet