(练习)单元综合检测5 Unit 5 Into the Unknown-【提分教练】2023-2024学年新教材高中英语选择性必修第四册(外研版2019)

单元综合检测(五) 1 2 3 4 5 6 7 8 9 10 11 12 B C D B A D C B D A B D 13 14 15 16 17 18 19 20 21 22 23 24 C B C A D G C F D C A B 25 26 27 28 29 30 31 32 33 34 35 D B C B A C B C D A C 36.has been explored　37.than　38.hidden　39.of 40．that/which　41.deepest　42.reached　43.to complete 44．photos　45.opening 第三部分　第一节 [参考范文] World Oceans Day On June 8th，a publicity activity of celebrating World Oceans Day was held in our school.It was intended to tell people how important it was to protect oceans.During the activity，students attended a lecture about oceans and everything related to them.Besides，students designed different kinds of posters that showed the beauty of oceans and the urgent need of protecting oceans.All of us were impressed by what we have learned in this activity.And we also learned that oceans are closely related to our human life and we should protect oceans from being polluted. 第二节 [参考范文] “A Speedster X bike or two old models？” Kareem hesitated.He thought to himself，“Whatever happened was not my fault.I'm buying Speedster X anyway.” However，as the image of Shawn and his disabled bike flashed before him repeatedly，he felt a shiver running down his body.An inner voice insisted that he should reach out a helping hand.Just at that moment，his initial guilt gave way to a sense of responsibility.After a quick mental calculation，he decided to buy two old models. “Hi！” Kareem appeared at Shawn's door cheerfully and asked，“Want to ride together？”Shawn got annoyed at the silly question.He moved his lips as if to say something but before he could say anything，Kareem took a stride to the side，revealing two shiny identical bikes magically.“What...How come? No，it couldn't be...”Shawn beamed with excitement，tears clouding his eyes.Mother，who had witnessed the scene from the window，walked up to Kareem and patted his shoulder gently and playfully，“Son! I'm really proud of you.” 第一部分　第一节 【语篇解读】　本文是一篇应用文。文章主要介绍了四座博物馆的情况。 1．B　[细节理解题。根据Giant Shoe Museum部分中的内容可知，当人们参观巨型鞋博物馆时可以购物。故选B。] 2．C　[细节理解题。根据Washington Banana Museum部分中的“but also to... can still enjoy it”可知，人们可以在网上参观华盛顿香蕉博物馆。故选C。] 3．D　[文章出处题。根据第一段内容并结合文章主要介绍了四座博物馆的情况可推知，文章可能选自旅行指南。故选D。] 【语篇解读】　本文是一篇说明文。文章主要介绍了利用声音测量海洋温度的相关内容。由于声音在不同温度的海水中传播速度不一样，所以能用它检测海洋变暖。 4．B　[细节理解题。根据第二段中的“Satellite observations cannot enter very deep below the surface.”可知，人们会利用卫星去收集海洋温度方面的数据，故B项正确。根据第二段中的“Ship-based observations capture only snapshots in time over a tiny portion of the water.”可知，船只能检测到一小部分水域，故A项错误；根据第二段中的“The most detailed picture of ocean heat comes from Argo... they cannot sample deeper parts of the ocean.”可知，Argo不能进入最深的海域，故C项错误；D项文中未提及。] 5．A　[细节理解题。根据第三段中的“Because sound travels faster in warmer water，differences in speed can reveal changing temperatures.”可知，由于声音在不同温度的水域传播速度不同，所以速度之间的差异可以显示温度的变化，因此，声音可以被用来检测海洋变暖，故A项正确。] 6．D　[细节理解题。根据第四段中的“Caltech researcher Wenbo Wu thought to monitor low-frequency sound waves sent out by earthquakes below the seafloor.”和最后一段中的“Meanwhile Simons and his colleagues... more earthquake sounds.”可知， Wu和Simons都使用了新的研究方法，故D项正确。] 7．C　[标题归纳题。根据本文的中心句“Sound may offer a creative way to take the ocean's temperature.”和其他内容可知，本文主要介绍了利用声音测量海洋温度的研究方法， 故C项最适合作本文的标题。] 【语篇解读】　本文是一篇说明文。文章主要介绍了一项新的研究发现：海水变暖导致鱼类和贝类减少。 8．B　[细节理解题。根据第一段第二句(一项新的研究发现，在过去80年里，海洋变暖已经减少了124种鱼类和贝类的可持续捕捞。)可知，这项新研究发现了海水变暖导致鱼类和贝类减少。故选B。] 9．D　[词义猜测题。根据倒数第二段“However，about 4 percent of some populations increased.”和本段最后三句(一个例子是一种黑海鱼。 它生活在美国东北部海岸。 随着气候持续变暖，这些鱼将更快地繁殖，直到它们达到极限。)可知，有些物种发展迅速。“That's because certain species have thrived in warmer waters.”意思是“那是因为某些物种在温暖的水域中发展迅速”，“thrived”意思是“发展迅速”，故选D。] 10．A　[细节理解题。根据倒数第二段“About 8 percent of the fish and shellfish populations the team studied saw losses as a result of the ocean warming.(研究小组研究的大约8%的鱼类和贝类种群由于海洋变暖而减少。)”可知，A选项“大约8%的鱼类和贝类遭受了巨大的损失”描述正确。故选A。] 11．B　[文章出处题。根据第一段中“一项新的研究发现，在过去80年里，海洋变暖已经减少了124种鱼类和贝类的可持续捕捞”并结合全文可知，该文章最可能出现在一本科学杂志上。故选B。] 【语篇解读】　本文是一篇说明文。珊瑚礁是海洋生态系统健康的基础，可以影响其他海洋物种的生存。但是专家发现，珊瑚礁正面临着严重恶化。采取措施保护珊瑚礁刻不容缓。 12．D　[推理判断题。根据第一段内容可知，珊瑚礁可以影响其他海洋物种的生存。故选D。] 13．C　[词义猜测题。根据第五段第一句中的“Reefs are basic to the health of marine ecosystems”和“marine life dies”可知，此处是指没有珊瑚礁，生态系统坍塌，海洋生物死亡。所以collapse意为 “坍塌”。故选C。] 14．B　[细节理解题。根据第七段第一句可知，珊瑚对高温的反应是改变颜色。故选B。] 15．C　[细节理解题。根据最后一段最后两句可知，Terry Hughes在最后一段想说的是必须立即采取措施保护珊瑚礁。故选C。] 第二节 【语篇解读】　本文是一篇说明文。文章介绍了在海外工作或生活时人们会经历的一些事情。 16．A　[根据上文“A lot of people believe that changing your geographic location can improve your language learning skills quickly.”可知，很多人认为改变你的地理位置可以快速提高你的语言学习技能；根据下文“Language application takes time.”可知，语言应用还需要时间。前后文形成转折，结合选项可判断，A项承上启下，符合语境。] 17．D　[根据上文“We feel extremely lonely at times.Yes，living abroad can be wonderful.”可知，尽管在国外生活是很美妙的，但是我们有时会感到非常孤独。由此可知，D项符合语境。] 18．G　[根据上文“Usually，your special day ends with the last phone call you get from home and then you can look through all your greetings on social media.”可知，在国外，你的生日并不会变得非常特别，而是和普通的日子差不多。由此可知，G项符合语境。] 19．C　[根据下文“Too often we simply can't tell you if we will be coming home for holidays this season.”可知，我们无法知道什么时候能够回家。由此可知，C项符合语境。] 20．F　[根据上文“We will change.”及下文“You become more mature，independent and open-minded.”可知，在国外生活和工作会让我们的性格发生变化。由此可知，F项符合语境。] 第二部分　第一节 【语篇解读】　本文是一篇夹叙夹议文。文章讲述了作者参加由教育署举办的模拟联合国活动的故事。作者每次参加都做好充分准备，仍旧没有获得最佳代表奖。从这些经历中作者意识到，尽管没有获奖但是自己学到了很多东西。 21．D　[在为期两天的会议中，与会者分成不同的委员会，代表(represent)不同的国家，讨论并试图解决问题。故选D。] 22．C　[模拟联合国有各种各样的(various)奖项，但它们可以总结为最佳代表奖、荣誉奖和口头奖。故选C。] 23．A　[每次“我”参加模联赛，“我”都做好充分的准备(preparations)，并且毫无疑问地获得了一些奖项。故选A。] 24．B　[但是“我”经常觉得“我”失败(failed)了，因为“我”从来没有获得过最佳代表奖。故选B。] 25．D　[“我”见证(witnessed)了那些没有资格赢得这个奖项但却多次获奖的人。故选D。] 26．B　[“我”只是对他们的成功充满羡慕(envy)。故选B。] 27．C　[后来“我”意识到没有获奖也是件好事(good)，因为“我”确实可以学到(learn)一些东西。故选C。] 28．B　[参见上题解析。] 29．A　[直到“我”成为“我”能做的最好的代表，“我”才配赢得(win)最佳代表奖。此处not... until... 表示“直到……才……”，故选A。] 30．C　[失败是主观的——我们可以把结果看作一次失败，或者看作一次成功(victory)。故选C。] 31．B　[任何失败都可以被视为一种收益(benefit)，因为你总能从中学到一些东西，下次做得更好(better)。故选B。] 32．C　[参见上题解析。] 33．D　[约翰·洛克的理论支持这一点，即我们生来是块白板：知识和能力是从我们的经历(experiences)中获得的。故选D。] 34．A　[如果“我”犯了一次错误，那么下次“我”可能就不会再犯(repeat)。故选A。] 35．C　[“我”相信这是真正(truly)变得更好的最好的方法。用truly加强语气，此处对上文总结。从经验中学习，不重复犯错误。故选C。] 第二节 【语篇解读】　本文是一篇说明文。文章指出，世界上的大部分海洋仍然是个谜，新技术正在帮助科学家探索这些隐藏的世界。 36．has been explored　[考查动词的时态、语态和主谓一致。由so far可知，句子时态用现在完成时，世界上的海洋是被开发，因此空处是现在完成时的被动语态，又因主语5 percent of it是单数，故填has been explored。] 37．than　[考查介词。由前面的比较级more可知，空处用表示比较的介词than，故填than。] 38．hidden　[考查形容词。空处用形容词作定语，根据句意可知，空处表示“隐藏的”，故填hidden。] 39．of　[考查介词。a variety of是固定短语，意为“各种各样的”，故填of。] 40．that/which　[考查定语从句。分析句子结构可知，空处引导定语从句，从句中缺少主语，先行词chemicals指物，故填that/which。] 41．deepest　[考查最高级。此处表示最深的位置，the后跟形容词的最高级，故填deepest。] 42．reached　[考查时态。由In 2012可知，句子描述过去的动作，时态用一般过去时，故填reached。] 43．to complete　[考查非谓语动词。the first后用动词不定式作后置定语，故填to complete。] 44．photos　[考查名词复数。photo是可数名词，前面无冠词，因此空处用复数，故填photos。] 45．opening　[考查非谓语动词。of为介词，其后跟动词-ing形式作宾语，故填opening。] 2/6 学科网（北京）股份有限公司 $$ 单元综合检测(五) 第一部分　阅读 第一节 阅读下列短文，从每题所给的A、B、C、 D四个选项中选出最佳选项。 A Going to museums is popular among tourists.It can relax the body and mind and give us special feelings. Leila's Hair Museum Leila's Hair Museum has a lot of hair jewelry pieces from the Victorian period and earlier，dating all the way back to 1680.It even has pieces containing hair from Queen Victoria，US presidents and Marilyn Monroe. Giant Shoe Museum Located in the famous Pike Place Market of Seattle，Giant Shoe Museum is a single exhibition wall outside the Old Seattle Paperworks store.As a result，it brings a lot of business to the store.To see the museum's collection，visitors must look through a stereoscope to view a lot of big shoes. Washington Banana Museum Ann Mitchell Lovell really loves bananas.In fact，she loves them enough not only to run Washington Banana Museum，but also to upload photos of the museum online so those who can't come to the physical location can still enjoy it. Roswell UFO Museum Exhibits include information on the Roswell incident of 1947，crop circles and other UFO sightings.Regardless of your personal opinion about UFOs，there's no doubt that the museum has been quite successful.Since it opened in 1992，it has outgrown two different locations，and now it occupies an old movie theater. 1．What can people do when they visit Giant Shoe Museum? A．Buy big shoes.　 B．Do the shopping. C．Hold exhibition. D．Do business. 2．Which museum can people visit online? A．Leila's Hair Museum.　 B．Giant Shoe Museum. C．Washington Banana Museum.　 D．Roswell UFO Museum. 3．Where can the text be found? A．In a history book. B．In an art magazine. C．In a notebook. D．In a guidebook. B Sound may offer a creative way to take the ocean's temperature.Climate change is steadily warming the seas，which have absorbed about 90 percent of the excess heat trapped by greenhouse gases.This warming contributes to the sea-level rise，endangers species and influences weather patterns. But tracking the warming is tricky.Ship-based observations capture only snapshots in time over a tiny portion of the water.Satellite observations cannot enter very deep below the surface.The most detailed picture of ocean heat comes from Argo，which can drop down to around 6，500 feet.But there are only about 4，000 such floats，and they cannot sample deeper parts of the ocean. In a paper published in Science，researchers compared the travel speeds of sounds produced by undersea earthquakes to detect ocean warming over wider areas.Because sound travels faster in warmer water，differences in speed can reveal changing temperatures.“They're opening up a whole new area of study，” says geophysicist Frederik Simons. Inspired by those early efforts to measure ocean heat with sound，Caltech researcher Wenbo Wu thought to monitor low-frequency sound waves sent out by earthquakes below the seafloor.“I know these earthquakes are very powerful sources，” Wu says，“so why not try to use the earthquakes？” He and his team tested the idea near Indonesia's island of Nias，where the Indo-Australian Plate is bumping under the Sunda Plate.The researchers gathered sound data from 4，272 earthquakes of magnitude 3 or greater from 2004 to 2016，and they compared sound wave speeds from quakes that originated in the same spot over the years.By modeling the differences，often just fractions of a second，they found that the ocean near Nias was warming by about 0.08 degree Fahrenheit per decade — more than the 0.047 degree F suggested by Argo's data.Less than one degree F does not sound large，but it takes considerable heat to warm the entire eastern Indian Ocean. The new method is promising，says oceanographer Bruce Howe.Meanwhile Simons and his colleagues are exploring an alternative technique，employing dozens of underwater microphones called hydrophones to catch more earthquake sounds.He notes that finding out the floats' precise locations will be challenging，however.“Overcoming such challenges would fill in important gaps，” Wu says.“We really need different methods of gathering the data as much as possible，” he adds. 4．What do people do to take ocean's temperature? A．Ships sail across all the ocean to take photos. B．Satellites are used to provide data on ocean heat. C．Argo enters the deepest seas for detailed pictures. D．The numbers of floats hit a record high for samples. 5．Why can sound be a method for detecting ocean warming? A．Because its speed varies with the temperature of water. B．Because it accompanies earthquakes below the seafloor. C．Because it is approved by researchers. D．Because its value has been proved by previous efforts. 6．What is the similarity between the studies by Wu and Simons? A．They use hydrophones as floats. B．They exchange their data with Argo. C．They meet the same trouble at work. D．They employ new research methods. 7．What is the best title for the passage? A．Undersea Earthquakes B．Climate and Seas C．Sound and Ocean Heat D．New Method Found C Finding fish is going to get harder as climate change continues to heat the world's oceans.A new study finds that warming seas over the past 80 years have reduced the sustainable(可持续) catch of 124 species(物种) of fish and shellfish. Overfishing(过度捕捞) has made that decline worse，researchers say.In some parts of the world，such as the heavily fished Sea of Japan，the decrease is as high as 35 percent.That's a loss of more than one in every three fish. Researchers examined changes in 235 populations of fish and shellfish between 1930 and 2010.On average，that warming has caused the sustainable catch to drop by 4.1 percent，the study found.About 8 percent of the fish and shellfish populations the team studied saw losses as a result of the ocean warming.However，about 4 percent of some populations increased.That's because certain species have thrived in warmer waters.One example is a kind of black sea fish.It lives along the north-eastern US coast.As warming continues，these fish will reproduce faster until they reach their limit. About 3.2 billion people worldwide rely on seafood as a source of food.That means it's urgent for commercial fishing fleets and regulators to consider how climate change is affecting the health of all of those fish in the sea. 8．What does the new study discover? A．Overfishing is to blame for fish health. B．Warming seas cause fewer fish and shellfish. C．Seafood matters to people's health worldwide. D．The living regions of fish and shellfish are different. 9．What does the underlined word “thrived” in paragraph 3 probably mean? A．Survived narrowly. B．Disappeared soon. C．Decreased sharply. D．Developed quickly. 10．What do we know about species of fish and shellfish? A．About 8 percent of them suffered from a great loss. B．About 35 percent of them survived in the Sea of Japan. C．About 3.2 billion species have been saved up to now. D．About 80 species have died out because of warming seas. 11．From which is the text probably taken? A．A cooking guide. B．A science magazine. C．A news review. D．A health brochure. D Between a quarter and one third of all marine species rely on coral reefs (珊瑚礁) at some point in their life cycle.The Great Barrier Reef，the world's largest coral reef，covers nearly 133，000 square miles and is home to more than 1，500 species of fish，411 species of hard coral and dozens of other species. Australian's Great Barrier Reef has lost 50% of its coral populations in the last three decades，with climate change，a key driver of reef disturbance，a new study has found. Researchers from the Centre of Excellence for Coral Reef Studies，in Queensland，north-eastern Australia，studied coral communities and their colony size along the length of the Great Barrier Reef between 1995 and 2017，finding reduction of virtually all coral populations. “We found the number of small，medium and large coral on the Great Barrier Reef has dropped by more than 50% since the 1990s，” reported co-author Terry Hughes，a professor at the centre，in a statement. Reefs are basic to the health of marine ecosystems — without them，ecosystems collapse，and marine life dies.Coral population sizes are also considered important when it comes to the coral's ability to reproduce.“A coral population has millions of small，baby corals，as well as many large ones，” said Andy Dietzel，a doctoral student in a statement.“Our results show the ability of the Great Barrier Reef to recover becomes weak compared to the past，” he added. Population falls occurred in both shallow and deep water coral species，experts found，but branching coral and table-shaped coral — which provide habitats for fish — were worst affected by mass bleaching (白化) events in 2016 and 2017，caused by record-breaking temperatures. Warm ocean temperatures are the main driver of coral bleaching，when coral turns white as a stress response to water that is too warm.Bleaching doesn't kill coral immediately，but if temperatures remain high，eventually the coral will die，destroying a natural habitat for many species of marine life. The new study found the serious worsening of coral colonies in the Northern and Central Great Barrier Reef following the mass bleaching events in the past five years，and experts said the southern part of the reef also suffered record-breaking temperatures in early 2020. “We used to think the Great Barrier Reef is protected by its huge size — but our results show that even the world's largest and relatively well-protected reef system is increasingly dropping，” Hughes said.He warned that climate change is driving an increase in the frequency of the reef disturbance like marine heat waves.“There is no time to lose — we must sharply reduce greenhouse gases as soon as possible，” he said. 12．What can we know about coral reefs? A．They are not able to recover by themselves. B．They make up the largest ecosystem in the sea. C．They can easily be disturbed by other marine species. D．They can influence the existence of other marine species. 13．What does the underlined word “collapse” in paragraph 5 mean? A．Change. B．Disappear. C．Crash. D．Progress. 14．How does coral respond to high temperatures? A．It will die very soon. B．It will change its color. C．It will fail to reproduce. D．It will kill other species. 15．What does Terry Hughes want to say in the last paragraph? A．The Great Barrier Reef doesn't have a self-protecting mechanism. B．The Great Barrier Reef is no longer the world's largest coral reef. C．Measures must be taken to protect coral reefs without delay. D．Climate change can increase the frequency of heat waves. 第二节 阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。 Things Only People Who Have Worked Overseas Can Understand If you have ever worked or lived overseas，I'm pretty sure you can understand the following things! We do not automatically become fluent in another language.A lot of people believe that changing your geographic location can improve your language learning skills quickly. 16 Language application takes time. We feel extremely lonely at times.Yes，living abroad can be wonderful. 17 Sometimes，we think that no one back at home understands our true feelings and life challenges，but a lot of other people travel long term and work abroad.Maybe they are not facing the same problems as you，but they know exactly how you feel. We don't really like our birthdays.Usually，your special day ends with the last phone call you get from home and then you can look through all your greetings on social media. 18 You may throw a small party with some of your new friends，but it's going to be nothing compared with the good-old feasts you used to have with your loved ones back at home. 19 Too often we simply can't tell you if we will be coming home for holidays this season.Sometimes，our working/living permits require us to stay in the country for at least a year.Adding up the flight costs and additional travel expenses，travelling home becomes quite a challenge for us. We will change. 20 You become more mature，independent and open-minded.Usually，you return home as a better person than the one you left as. A．The truth is: it isn't like that. B．We may not plan to move back home. C．We don't know when we'll come home next time. D．However，it can get extremely lonely on some days too. E．Living abroad makes us value the little things a lot. F．Living and working abroad shape your personality a lot. G．After that，you just act as if it's another ordinary day in your life yet. 第二部分　语言运用 第一节 阅读下面短文，从每题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。 Three years ago，I participated in Model United Nations(MUN)held by the Education Department，which was a mock (模拟的) UN activity.During the two days，students are separated in different groups which 21 different countries to debate and try to solve problems.MUN has 22 awards：best delegates (代表)，honorary mentions，and verbal mentions. Each time I participate in MUN，I made good 23 and undoubtedly got a few awards.But I often felt as if I'd 24 because I had never won the best delegate award.I 25 those who didn't deserve to win the award but won it various times，and I was just filled with 26 at their success.But later I realised that it was also 27 not to get the award because I could actually 28 something，and that I shouldn't 29 the best delegate award until I was the best delegate I could be. Failures are completely subjective — we can look at a result as a failure or a 30 ．Any failure can be regarded as a(n) 31 because you can always learn something from it and do 32 next time.This is supported by John Locke's theory that we are born with blank views: knowledge and ability are learned from our 33 ．That's true.If I make a mistake in the life practice，then I probably won't 34 that next time.I believe this is 35 the best way to become better. 21．A．strengthen B．condemn C．inspire D．represent 22．A．identical B．temporary C．various D．false 23．A．preparations B．predictions C．appointments D．explanations 24．A．accelerated B．failed C．exited D．succeeded 25．A．approached B．trained C．expected D．witnessed 26．A．relief B．envy C．satisfaction D．delight 27．A．annoyed B．ashamed C．good D．terrible 28．A．desert B．learn C．delete D．display 29．A．win B．miss C．deliver D．value 30．A．bond B．bet C．victory D．loss 31．A．aim B．benefit C．burden D．limit 32．A．funnier B．worse C．better D．slower 33．A．decisions B．attitudes C．positions D．experiences 34．A．repeat B．admit C．accept D．notice 35．A．wrongly B．scarcely C．truly D．narrowly 第二节 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 Today，much of the world's ocean is still a mystery.Only 5 percent of it 36._______ (explore) so far.In fact，we know more about some areas of Mars 37.________some parts of the world's ocean. New technology，however，is helping scientists explore these 38.________(hide) worlds.For example，scientists are using an underwater vehicle called DeepSee to explore seamounts — underwater mountains.Scientists have used DeepSee to study Las Gemelas，an area of seamounts near Costa Rica.A huge variety 39.______species live around Las Gemelas.Some of these species may have chemicals 40.______can help people fight illnesses. The 41.________(deep) location of the earth is the Mariana Trench in the Pacific Ocean.The ocean floor there is about 11，000 meters deep.In 2012，filmmaker and explorer James Cameron 42.________(reach) the Mariana Trench in a vehicle called Deepsea Challenger.He was the first 43.________(complete) the journey alone.Cameron took 44.________(photo) and made videos on the ocean floor.Deep-sea exploration also helps us in other ways.For example，we are learning how underwater earthquakes cause tsunamis(海啸)．As Cameron says，“This is the beginning of 45.________(open) up a new frontier.” 第三部分　写作 第一节 6月8日，你校举办了庆祝“世界海洋日”的宣传活动，请你就此为校英文报写一篇短文投稿，内容包括： 1.活动目的； 2.活动过程(设计海报、听报告等)； 3.活动意义。 注意：1．写作词数应为80左右；　 2．请按如下格式作答。 World Oceans Day ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ 第二节 阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。 Kareem sighed as he counted his money again.He was still short of fifty dollars to buy the latest Speedster X bike.In order to save his pocket money to replace his old bike，he had been packing sandwiches to school in the last three months. “How can I get that fifty dollars？” he thought to himself.His mind was wandering when Mother's voice disturbed his thoughts.“Kareem，I just ran into Aunty Kim，our neighbour who just moved in next door.Her son，Shawn，will cycle to school next week.Could you show him the shortcut to school later? It's Saturday anyway！” Hearing this，Kareem had no option but to obey it.He knew Mother had probably already volunteered his service to Aunty Kim.“Oh，here's a mail from your Grandma.Open it！” added Mother. Kareem's grandmother lived abroad and she would send him photos and cards.He opened the envelope and pulled out a greeting card.Incredibly，a fifty-dollar note slipped out as well! Kareem was wild with joy.Waving the note in the air，he shouted happily，“Enough money for my bike！” At 2 p．m.Kareem met Shawn as arranged by their mothers.The sooner he finished this task，the sooner he could go to the bike shop.While the boys were cycling，a squirrel (松鼠) appeared behind a parked car and dashed across the road so suddenly that the boys knocked into each other and fell down heavily.Kareem said regretfully，“I forgot to warn you about the squirrel population here.” As Kareem was lifting up his broken bike，Shawn cried anxiously，“Oh，my poor bike! It's completely broken.” Watching Shawn carrying the disabled bike home in silence，Kareem hurried to the bike shop for his dream bike.The sign “Half Price for Old Models” in the shop attracted his eyes. 注意：1．续写词数应为150左右； 2．请按如下格式作答。 “A Speedster X bike or two old models？” Kareem hesitated._____________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ “Hi！” Kareem appeared at Shawn's door cheerfully and asked，“Want to ride together？”______________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ 3/12 学科网（北京）股份有限公司 $$