1、第 1 页 共 8 页 Unit 1 课时跟踪练课时跟踪练(四四) Extended reading & Project & Assessment A 级级语言知识基础练语言知识基础练 .单词拼写单词拼写 1 His father was a senior (级别高的级别高的) officer at the bank and all the clerks respected him. 2There exists a wide range of different opinions among the committee (委员会委员会) members. 3The bank made prof
2、its (利润利润) of $6.5 million from the war. 4We have begun the difficult process (进程进程) of reforming the education system. 5 No doubt that the theater has contributed to the area s development and economic (经经 济的济的) growth. 6This beautiful old building has been restored to its former (以前的以前的) glory. 7D
3、o keep the poison (毒药毒药) away from your children. 8When food goes bad, there are some chemical (化学的化学的) reactions taking place. .单句语法填空单句语法填空 1Are you sure you entirely (entire) understand the importance of this task? 2They set up many branches (branch) throughout the country. 3Recycling (recycle) i
4、s important to help protect our environment. 4Proper first aid could save one s life, especially when he or she is heavily bleeding or deeply poisoned (poison). 5As a consequence (consequent) of oversleeping this morning, I was late for school. 6 The trees planted at the end of 1990s have become a p
5、owerful defence (defend) against the strong wind. .选词填空选词填空 in defence of, in the process of, as a consequence of, be senior to, get rid of 1Though Jack is younger than Ann, he is senior to her. 2We are in the process of selling our house. 3We must balance the advantages against the disadvantages be
6、fore we decide to get rid 第 2 页 共 8 页 of the old customs. 4My father is coughing frequently as a consequence of smoking these days. 5We should come forward in defence of peace. .补全句子补全句子 1Gone are the days when we got together there happily. 我们在那儿快乐相聚的日子一去不复返了。我们在那儿快乐相聚的日子一去不复返了。 2With no one to tur
7、n to in such a frightening situation, she felt very helpless. 在这在这么令人害怕的情况下没有一个可以求助的人么令人害怕的情况下没有一个可以求助的人， 她感她感到很无助。到很无助。 3It is a great success for Paris to win the right to host the 2024 Summer Olympic Games. 对巴黎来说对巴黎来说， 获得获得 2024 年夏季奥运会举办权是一个巨大的成功。年夏季奥运会举办权是一个巨大的成功。 4The letter that I received yes
8、terday was from my sister. 我昨天收到的信是我妹妹写的。我昨天收到的信是我妹妹写的。 B 级级话题语篇能力练话题语篇能力练 .阅读理解阅读理解 A More than two thirds of the world s polar bears will be wiped out by 2050, according to a shocking new study.By then, scientists say, global warming will have melted 42 per cent of the Arctic sea ice.By 2100, only
9、 a very few of these important creatures will be left. The report has been produced by the US Geological Survey.The scientists have publicized their findings in the hope of influencing US Interior Secretary Dirk Kempthorne, who has been asked to put polar bears on the US endangered species list. Pol
10、ar bears depend on floating sea ice as a platform for hunting seals, which are their main food.Without enough ice, polar bears would be forced to go onto the land, where they are poorly skilled hunters, and would be unlikely to adapt to the life on the land in time.Experts say few little bears would
11、 survive and the stress could make many females unable to get pregnant. The team of American and Canadian scientists spent six months studying bears, on the ground, from spotter planes and in the lab, using computer models.Some team members fear the result is even worse for the bears than what their
12、 report says.They say the Arctic is 第 3 页 共 8 页 warming faster than anywhere in the world and much faster than their computer has been forecasting.Satellite observations have showed that the ice has decreased to an all- time low. However, not everyone in the scientific community believes that global
13、 warming is happening on such an alarming scale.Another investigation has found that polar bears are still being hunted by wealthy “sportsmen” who want their skins and heads.At least ten international companies offer bear- hunting trips. 语篇解读：语篇解读：本文是一篇说明文。文章通过北极变暖导致本文是一篇说明文。文章通过北极变暖导致北极熊急剧减少的例子来呼吁人
14、北极熊急剧减少的例子来呼吁人 们关注全球变暖们关注全球变暖， 同时提高对濒危动物的保护意识。同时提高对濒危动物的保护意识。 1What do we know about Dirk Kempthorne according to the passage? AHe is an animal scientist. BHe is a protector of animals working for the US government. CHe has been asked to put polar bears on the US endangered species list. DHe has off
15、ered to put polar bears on the endangered species list. 解析：解析：选选 C 细节理解题。根据第二段第二句中的细节理解题。根据第二段第二句中的“US Interior Secretary Dirk Kempthorne, who has been asked to put polar bears on the US endangered species list”可知可知， Dirk Kempthorne 被要求把北极熊加入美国濒危物种名单内被要求把北极熊加入美国濒危物种名单内，故选故选 C。 2Why will polar bears
16、die out if there is not enough sea ice? ABecause polar bears can t catch enough food without ice. BBecause polar bears eat ice when they feel thirsty. CBecause polar bears will be easily found by hunters without ice. DBecause most female bears are used to giving birth under ice. 解析：解析： 选选 A 推理判断题。 根
17、据第三段第一句推理判断题。 根据第三段第一句“Polar bears depend on floating sea ice as a platform for hunting seals, which are their main food.”可知可知，北极熊主要以海冰为平台来猎北极熊主要以海冰为平台来猎 取食取食物物，没了海冰，它们就不能猎到足够的食物，故选，没了海冰，它们就不能猎到足够的食物，故选 A。 3After a six month study, some scientists fear that Athere is something wrong with their compu
18、ters Bpolar bears will disappear even faster than they have ever expected Ctheir computer models are not as accurate as they expected Dglobal warming will destroy everything in the Arctic 解析：解析： 选选 B 细节理解题。 根据第四段第二句细节理解题。 根据第四段第二句“Some team members fear the result is even 第 4 页 共 8 页 worse for the b
19、ears than what their report says.”可知可知，许多科学家担心全球变暖给北极熊造许多科学家担心全球变暖给北极熊造 成的影响比报成的影响比报告里所描述的要严重得多告里所描述的要严重得多，故选，故选 B。 B The goal of every plant and animal is the same：to create the next generation.The way a plant makes another generation of its species is by making seeds.Flowers are the tools that pla
20、nts use to make their seeds. The job of a flower is to help its pollinator put pollen(花粉花粉) exactly in the right place at the right time to make a seed.When a plant s flower succeeds in this, the plant gets to pass the secret for this success to the next generation, through the genetic code in its s
21、eeds！When a plant fails to grow up and make seeds, its genetic code does not get passed on.It becomes a loser in the game of life. The environment is constantly testing each plant.Competition for sunlight, water, nutrients and space is fierce.Herbivores(食草动物食草动物) are hungry and plants are their brea
22、kfast, lunch and dinner！Only the strongest individuals survive long enough to reproduce.These survivors keep making seeds, letting the environment select the winners and losers.Through this selection process plants have evolved (进化进化) to survive life in every habitat on our planet.This evolution has
23、 filled even the harshest habitats with life, including cold high mountains. Although the pollination of a flower may appear to happen by accident, plants and pollinators have been practicing for millions of years to make sure that this “accident” happens.Often a plant and pollinator co- evolve (evo
24、lve together), adapting to (适应适应) changes in each other to improve their own survival.A plant species may depend on a single species of pollinator to make its seeds.Likewise, many pollinators rely on one plant species to provide all the food for their young. 语篇解读：语篇解读： 本文是一篇说明文。 文章主要讲述了植物是如何创造下一代的。本
25、文是一篇说明文。 文章主要讲述了植物是如何创造下一代的。 4.Which of the following is a necessary factor for a plant to become a winner in the game of life? AThe plant fails to grow up. BThe plant makes no seeds. CThere are no pollinators. 第 5 页 共 8 页 DThe plant s genetic code gets passed on. 解析：解析：选选 D 细节理解题。根据第二段内容可知细节理解题。根据第
26、二段内容可知， A、B、C 三个选项都是错误的三个选项都是错误的， 再再 结合该段倒数第二句结合该段倒数第二句“When a plant fails to grow up and make seeds, its genetic code does not get passed on.It becomes a loser in the game of life.”可知可知， 遗传密码得以传递是植物在生存遗传密码得以传递是植物在生存 游戏中获胜的必要因素。故选游戏中获胜的必要因素。故选 D。 5From the third paragraph we can infer that A.the env
27、ironment is very important for a plant to survive Bherbivores can increase the development of plants Conly the strongest plants can have seeds to reproduce Dsunlight, water, nutrients and space are equal for all the plants 解析：解析： 选选 A 推理判断题。 根据第三段第一句推理判断题。 根据第三段第一句“The environment is constantly test
28、ing each plant.”及本段内容可推断及本段内容可推断， 环境对于植物的生存起非常重要的作用。环境对于植物的生存起非常重要的作用。 6The underlined word “harshest” in the third paragraph probably means “ ” Aseverest Bbusiest Crichest Dmost valuable 解析：解析：选选 A 词义猜测题。根据画线词义猜测题。根据画线词后的词后的 including cold high mountains 可判断可判断，即使即使 是在有生命的最严酷的栖息地是在有生命的最严酷的栖息地，也充满了这
29、种进化过程。也充满了这种进化过程。 7The last paragraph tells us a truth that Athe pollination of a flower happens only by bees Bplants rely on pollinators to provide all the food for their young Cplants and pollinators depend on each other to survive Dpollinators depend on plants to make seeds 解析：解析：选选 C 推理判断题。根据最后一
30、段的内容可知推理判断题。根据最后一段的内容可知， 植物和虫媒是相互依存的。故植物和虫媒是相互依存的。故 选选 C。 C Big cats have existed on the earth for millions of years, though scientists aren t sure exactly how long.But a new study indicates that a skull (颅骨颅骨) of a snow leopard (豹豹) relative that was recently unearthed is 4.4 million years old.That
31、 makes it the oldest big cat fossil (化化 石石) ever found. A team of US and Chinese scientists unearthed the skull in Tibet.This creature is not a 第 6 页 共 8 页 direct ancestor to big cats, but it is closely related to the snow leopard, the study leader Jack Tseng told the Associated Press.The fossil len
32、ds evidence to the belief that big cats existed in Asia and spread out from there. Big cats are at the top of the food chain and have few predators of their own.Big cats include snow leopards, clouded leopards, tigers and lions.Based on genetic judgements, most scientists believe they first existed
33、in Central Asia.But previously, the oldest known big cat fossil was 3.6 million years old and found in Africa. The new fossil findings were published in the November 13 issue of the science journal Proceedings of the Royal Society B：Biological Sciences.Tseng and his team were fossil hunting in the H
34、imalayas in 2010 when they discovered some bones, including the buried cat skull.The researchers were able to determine its age by studying the surrounding rocks and soil.The skull indicates that the animal was about the size of a clouded leopard, which can grow up to 50 pounds.In 2012, the team ret
35、urned to unearth more cat bones. David Polly from Indiana University told the Associated Press that the fossil is “convincingly older than the current record holder” ” He added that there could be even older big cat fossils in the Tibetan plateau to uncover. 语篇解读：语篇解读：本文是一篇说明文。文章讲述了最新的考古发现本文是一篇说明文。文
36、章讲述了最新的考古发现一个大型猫科动物的颅一个大型猫科动物的颅 骨化石。骨化石。 8What does the newly unearthed skull prove? ABig cats might have their origins in Asia. BThe oldest fossil is 4.4 million years old. CThe snow leopard is the oldest big cat. DThe skull is of big cats direct ancestor. 解析：解析：选选 A 推理判断题。根据第二段最后一句推理判断题。根据第二段最后一句“
37、The fossil lends evidence to the belief that big cats existed in Asia and spread out from there.”可推知可推知， 该化石使我们相信大型该化石使我们相信大型猫科猫科 动物起源于亚洲动物起源于亚洲， 然后繁衍到其他地方。然后繁衍到其他地方。 9What does the underlined word “predators” in Paragraph 3 mean? ARelatives. BEnemies. CPartners. DProtectors. 第 7 页 共 8 页 解析：解析：选选 B
38、词义猜测题。画线词所在句意为：词义猜测题。画线词所在句意为： 大型猫科动物位于食物链的顶端大型猫科动物位于食物链的顶端， 所所 以几乎没有天敌。故选以几乎没有天敌。故选 B。 10How do the researchers know the skull s age? ABy measuring its size and forehead. BBy examining other bones around it. CBy studying its chemical composition. DBy exploring the rocks and soil around it. 解析：解析： 选
39、选 D 细节理解题。 根据第四段第三句细节理解题。 根据第四段第三句“The researchers were able to determine its age by studying the surrounding rocks and soil.”可知可知， 研究者们通过研究化石周围的岩石和研究者们通过研究化石周围的岩石和 土壤来了解化石的年代。土壤来了解化石的年代。 11Where was “the current record holder” in the last paragraph found? AAsia. BAfrica. CAmerica. DAustralia. 解析：解析
40、：选选 B 推理判断题。题干中引号内的词意为推理判断题。题干中引号内的词意为“现在的纪录保持者现在的纪录保持者”， 应该指的应该指的 是新化石发现之前的最古老的化石；而第三段最后一句是新化石发现之前的最古老的化石；而第三段最后一句“But previously, the oldest known big cat fossil was 3.6 million years old and found in Africa.”可知可知， 现在的纪录保持者是在非洲发现在的纪录保持者是在非洲发 现的。现的。 .阅读七选五阅读七选五 Did you ever look at your parents and
41、 wish they were healthier? You re not the only one.We did a survey of kids. 1 69% of the kids would like their parents to make changes to be healthier.We also surveyed parents.They d work extra hard to get healthier, if their kids asked them to. Here are the tips on talking to your parents about the
42、ir health habits. Create an idea list.Try to remember what got you thinking about this topic.Is there an unhealthy thing you d like to see them stop doing, or do less often? Get your list together. Practice how to say it.Changing can be hard.And it s not always easy to heat that someone you love thi
43、nks you need to do it. 2 If your parents wanted you to make a change, how would you like them to ask? A gentle, earing way often works best. 3 In our survey, 85% of kids said they s be willing to make healthy changes if it 第 8 页 共 8 页 would help the whole family.You might be willing to go for a walk
44、 together after dinner, let your parents know you re willing to make an effort. Make a decision. 4 It can be trouble if your goal is too general or you don t have steps in mind. 5 Encourage your parents as the family starts making changes.An extra hug or a homemade card of encouragement can give the
45、m what they need to keep going down the healthy road. ACheer them on. BBe willing to help. CFind the right person to talk with. DParents care more about their kids health. EIt helps to pick a single goal and be detailed. F46% said they worry about their parents health. G.So you ll want to bring up t
46、his topic in just the right way. 语篇解读：语篇解读：本文是一篇说明文。文章介绍了如何帮助父母保持健康。本文是一篇说明文。文章介绍了如何帮助父母保持健康。 1选选 F 根据后文根据后文“69% of the kids would .to be healthier”可知可知，此处应该介绍另外此处应该介绍另外 46%的人的看法。故选的人的看法。故选 F。 2选选 G 根据根据前文前文“Practice how to say it.Changing can be hard.”可知可知，练习如何说练习如何说， 改变是困难的改变是困难的，所以你想用正确的方法提出这个问题所
47、以你想用正确的方法提出这个问题，故选故选 G。 3选选 B 根据后文根据后文“You might be willing to go .make an effort.”可知可知，本段介绍了你要本段介绍了你要 愿意提供帮助愿意提供帮助，故选故选 B。 4选选 E 根据前文根据前文“Make a decision.”可知可知，要作出决定要作出决定，选择一个目标并详细说明是选择一个目标并详细说明是 有帮助的有帮助的，故选故选 E。 5选选 A 根据后文根据后文“Encourage your parents as .making changes.”可知可知，本段介绍了要本段介绍了要 鼓励他们鼓励他们，故选故选 A。
