1、.阅读理解A(2018广西师大附属外校高三模拟)Every day, people come into contact with thousands of chemicals. These chemicals are said to be harmless to human health. In fact, the chemicals are considered so safe that we wash with them. We put them on our bodies and even our faces. Other chemical products are used throu
2、ghout our homes.By the time you walk out of your front door, you have already been exposed to thousands of chemicals. On its own, each chemical seems harmless. But in combination with other chemicals, they may become deadly. That is the finding of a twoyear study by a highprofile(高调的) task force of
3、scientists. The task force was told to investigate the cancercausing possibility of chemical mixtures.Linda Gulliver was one of the 174 scientists on the task force. Their job was to study the cancercausing potential of 85 chemicals. All 85 are said to be common in the environment.Ms Gulliver explai
4、ns that chemicals have the potential or ability to form dangerous mixtures. Even simple minerals can become dangerous when mixed with chemicals found in plastics or beauty products.Working in groups, the scientists explored how different chemical mixtures could lead to cancer. Ms Gullivers team look
5、ed at the ability of different combinations to support the increase of malignant(恶性的) human cells.She says the current way to identify whether chemicals cause cancer is to test them one at a time. This method leads, she adds, to a long list of supposedly “safe” chemicals. She and her team say that a
6、pproach needs to change.“We definitely need certain researchto find out what mixtures of chemicals would be more harmful than others; what groups of chemicals, when together, would produce more harmful effects. And at the moment, that is not known.”An estimated one in five cancers has been linked to
7、 chemical exposure. It may turn out that the cancercausing villain(恶棍 ) is not a single chemical at all.语篇导读本文为科普说明文，揭示了多种安全的化学物质相混或成致癌物。1What effect may one single chemical have on us according to the text?AIt may destroy our body. BIt may not cause danger to us.CIt may let us suffer from cancer. D
8、It may let our body make a change.解析 B 细节理解题。根据第三段第一句可知，一种化学物质可能不会对我们造成危害，故选 B 项。2What can we learn about Ms Gullivers research?AShe has found 85 cancercausing chemicals.BShe has found reasons for five kinds of cancers.CShe has found that only one chemical can cause cancer.DShe is not sure what mixt
9、ures of chemicals are more harmful.解析 D 细节理解题。根据倒数第二段可知，格利佛也不确定哪一种化学物质的混合物更具危害，故选 D 项。3According to the text, we can infer that the study _. Ais just wasting time and money Bis still in need of great effortsCwill cause panic in public Dwill be resisted by the public 解析 B 推理判断题。根据倒数第二段可以推知，这项研究仍需要很大的
10、努力，故选B 项。4What is the best title for the text?AMixtures of Safe Chemicals May Cause CancerBBeing Exposed to One Chemical Is DangerousCHow Mixtures of Safe Chemicals Come into Being？DWhat Is the Real Cause for Cancer?解析 A 标题归纳题。根据全文尤其是最后一段最后一句可知，文章主要揭示了多种安全的化学物质相混可能会形成致癌物，故选 A 项。B(状元桥原创)Many birds ma
11、y be small, but theyre great natural athletes. Every year, birds literally cross mountains, deserts and seas to reach their favorite breeding(繁殖) and feeding grounds. Arctic ternseach weighing about a fifth of a poundmigrate halfway around the world, flying to Greenland in spring and the South Pole
12、in winter. Birds rarely go “as the crow flies”in a direct line from Point A to Point B So, how do they choose their routes?Answering this question sheds light on whats likely a driving force in birds evolution. Migration can be risky business, which means those migratory routes that have survived to
13、 this day likely have major benefits for those that take them, even if they might seem circuitous(迂回的) at first glance. Bird biologists have already figured out a few factors that make certain, longer routes better for birds, including avoiding the open ocean, and having safe rest stops along the wa
14、y. Now, a new study offers evidence that birds consider annual wind patterns too. Together, these factors make certain paths appealing to birds of many kinds, creating the worlds great migratory flyways.To check the effect of wind on migratory routes, biologists created a mathematical model of more
15、than a million potential migration routes, all around the world. They added 21 years worth of worldwide wind data into the model. They then compared how long it would take a bird to fly between pairs of points around the world if the bird took the shortest route, versus the windoptimized (风向最佳的) rou
16、te. Wind optimization could reduce the time it takes to migrate between places, the researchers found. Its important to remember that a bird doesnt actually plan its migration. It may follow what it learned from its parents. A bird cant be able to predict what winds will blow over its route.语篇导读本文为说
17、明文。每年，大量的鸟儿都会从一个地方迁徙到另一个地方，下面且看它们是如何选择迁徙线路的。5Why does the writer mention “Arctic terns” in the first paragraph?ABecause they are rare birds that fly in a direct way.BBecause they are the most intelligent birds that know where to migrate.CBecause they are just examples of many birds that migrate with
18、 the season changes.DBecause they are the heaviest birds that can migrate long in the world.解析 C 细节理解题。根据第一段内容可知，北极燕鸥虽然小但擅长飞，它只是文章开头第一句的一个例子而已：许多鸟类虽小，但他们是伟大的天生运动员，它们因季节的变化而迁移，故选 C 项。6How might the birds migrate all the way?ASwiftly. BVisually.CGracefully. DIndirectly.解析 D 细节理解题。根据第一段倒数第二句可知，鸟类迁徙路线不是
19、笔直的；第二段进一步说明为什么鸟类迁徙是迂回的，故选 D 项。7What factors might birds take into account when they are choosing their migration routes according to bird biologists?AMigration company. BWind pattern.CBreeding grounds. DChallenging routes.解析 B 细节理解题。根据第二段可知，在长途迁徙中，鸟类主要是要考虑这样几个因素：避免空旷的海域，拥有安全的休息站和风向，故选 B 项。8What is
20、the best possible title for this passage?AThe function of mathematical modelBBird migration routesCThe effect of wind on bird migrationDNatural athletes in the world解析 B 标题归纳题。全文围绕着“鸟类为什么迁徙，如何选择迁徙线路，以及在迁徙的过程中如何利用风向”等问题展开，同时也告诉读者鸟类学家们对鸟类迁徙的线路的研究。B 项 3 个关键词都出现并能概括文章大意。 A、C 和 D 项都是片面的信息，故选 B项。.语法填空(201
21、8长郡中学高三实验班选拔)Traditional Chinese wedding customs have been around for thousands of years. They may vary from place to place and time to time, but have been holding an important position in the lives of Chinese people, 1causing (cause) a farreaching impact on the way the Chinese lead their lives. The
22、 traditional Chinese marriage usually 2involves (involve) some necessary procedures, such as matchmaking, engagement, meeting the bride, and three bows. 3 In addition, a typical Chinese wedding nowadays goes like thiswhen a new couple is engaged, 4what follows is a 5choice (choose) of the date of th
23、eir marriage.Most people would favor a holiday or special Chinese festival for their relatives and friends 6to attend (attend) the wedding. However, quite a few others, especially 7those in the countryside, would fix a lucky date so that their marriage would have “Double Happiness”. The wedding cere
24、mony is usually hosted 8warmly (warm) and the wedding ceremony very often ends with 9a unique banquet. Toasts are made to wish the new couple long life, everlasting love and happiness, early birth of a 10healthy (health) baby and so on.语篇导读本文为说明文，主要介绍了中国的婚俗习惯。1causing 解析 考查非谓语动词。空处表示自然而然的结果，主语 They
25、和动词cause 之间为逻辑上的主谓关系，故用现在分词作状语。2involves 解析 考查时态和主谓一致。根据该句中的 usually 可知，此处表示经常发生的动作，故用一般现在时；主语 The traditional Chinese marriage 为单数，故谓语动词应用第三人称单数形式。3In 解析 考查介词。 in addition 此外，除此之外，为固定搭配。4what 解析 考查连词。空处引导主语从句，且在从句中作主语，故用 what 引导该主语从句。5choice 解析 考查词性转换。根据空前的不定冠词 a 可知，空处应用名词。6to attend 解析 考查非谓语动词。根据语
26、境可知，空处表示目的，故用动词不定式作目的状语。7those 解析 考查代词。空处指那些在农村地区的人，表示复数，故用代词those。8warmly 解析 考查词性转换。副词作状语修饰动词 hosted。9a 解析 考查冠词。空后的 banquet 为可数名词，表示泛指，且 unique 的发音以辅音音素开头，故用不定冠词 a。10healthy 解析 考查词性转换。空处修饰后面的名词 baby，表示“一个健康的婴儿” ，故用形容词。.短文改错Dear Tom，Im sorry to hear that you are having problems with your exams. You
27、are not . Many lonelyalonestudents have the same problems you do.likeasYou told me that you were anxious to sleep well the night before an exam. Actually, it sotoois very natural. To avoid too nervous, youd better not take your grades . being/feeling seriousseriouslyIf you a proper attitude to the s
28、cores, you will sleep well and feel energetic.hadhaveYou said you couldnt get into your normal state in an exam, / eventually and thatwhichresulted in your poor performance. I suggest you will / work hard at your lessons daily willshouldinstead of sitting up before an exam. You must have confidence
29、in . When you feel youyourselfconfident, you can do as well as expected.Wish you a greater progress in your study.Yours sincerely，Li Hua 解析 lonely 表示孤独的(含有感情色彩) ；alone 表示独自一人。此处是说不是你一个人(alone) 有这个问题，很多同学也有一样的问题。 解析 the same as 和一样。 解析 tooadj./adv.to do sth 太而不能做某事。 解析 avoid 后不能直接跟形容词；avoid doing sth 避免做某事。 解析 take sth seriously 认真对待某事。 解析 if 引导的条件状语从句，主句用一般将来时，从句用一般现在时。 解析 此处在 that 前加上 and，表示上下句子是并列关系；或者将 that 改为 which变成非限制性定语从句，先行词是前面整个句子，which 在从句中作主语。 解析 suggest(建议)引导的从句用虚拟语气：(should )动词原形。 解析 动作反及本身用反身代词。 解析 progress 意为“进步 ”时为不可数名词，其前不能用不定冠词 a 修饰。
