2019_2020学年高中英语课时分层作业4（含解析）外研版选修9.docx

课时分层作业(四).单词拼写1_(干旱)and famines(饥荒) have killed up to two million people here.2The design of the bicycle has managed to reduce the effects of wind_(抵抗力) and drag.3Remove the wafers with a spoon and_(转移) them to a plate.4I_(赞成) of the proposal.5Many parents_(反对) bilingual education in schools.6The government_(发布) a warning that the strikers should end their action or face dismissal.7Popular music_(演变) from folk songs.8What do you_(想象) doing, anyway?9The problem is by no means_(奇怪的) to America.10It gradually_(开始明白) upon me that I still had talent and ought to run again.【答案】1.Drought2.resistance3.transfer4.approved5.oppose6.issued7.evolved 8fancy9.peculiar10.dawned.阅读理解AThere are a growing number of pet owners who feed their pets on raw foods，which means “uncooked” meat and bones.William Burk，a pet food specialist from the Food and Drug Administration (FDA) ，believes that feeding raw meat to pets is against its goal of protecting the public from health dangers，and that raw meat and bones do not have all the required nutrition that a pet needs every day.Recognizing how popular these foods are，the FDA has provided guidelines for producers of pet foods which contain uncooked meat for dogs，cats and other pets.The guidelines give rules to protect pet owners and pets from dangers about food safety and lack of nutrition.Pet owners who feed raw meat and bones to their pets should deal with these products very carefully to protect themselves against possible dangers，says Burk.Just as when you are preparing foods for human beings，use hot water and soap to wash your hands，containers，and surfaces that come into contact with the food.Dont put your hands near your mouth until you have washed them，and dont allow your pet to touch your face right after it has eaten raw meat.“If pet owners choose to feed bones to their pets，they should watch their pets carefully when they are eating bones，”Burk says.“If a pet eats a big piece of bone that wont pass through its digestive system(消化系统)，it is likely to kill the pet.”【语篇解读】在喂养宠物时，人们总是喜欢将生肉和骨头给宠物吃，其实这样既危险，又缺乏营养。1What does William Burk think of feeding pets on raw meat?AItll make the pet owners sick.BItll keep the pets wild nature.CIts against the policy of the FDA.DIts dangerous and lack of nutrition.【解析】细节理解题。根据第一段第二句中的“feeding raw meat to pets is against its goal of protecting the public from health dangers，and that raw meat and bones do not have all the required nutrition”可知，William Burk认为用生肉喂养宠物不仅危险，而且缺乏营养，故D项正确。【答案】D2The FDA has provided guidelines for producers of pet foods with raw meat because _.Apet safety is a serious problemBmost pets are lack of nutritionCfeeding pets on raw foods is popularDthe quality of pet foods is dropping【解析】细节理解题。根据第二段的第一句“Recognizing how popular these foods are，the FDA has provided guidelines for producers of pet foods which contain uncooked meat for dogs，cats and other pets”可知，由于认识到生食深受欢迎，故FDA为宠物食物生产厂商提供了指导原则，故C项正确。【答案】C3Those who feed pets on raw foods should do some necessary cleaning when _.Apreparing raw meat for petsBtouching the food containersCtaking their pets out for a walkDpreparing foods for human beings【解析】细节理解题。根据第三段的第二句“Just as when you are preparing foods for human beings，use hot water and soap to wash your hands，containers，and surfaces that come into contact with the food”可知，正如准备人类食物一样，为宠物准备生食时要用热水和肥皂洗手、清洗容器和与食物有接触的表面，故A项正确。【答案】A4What suggestion is given to pet owners in the last paragraph?APets should be forbidden to eat raw bones.BPets should be kept away from the raw meat.CPets should be checked on their digestive system.DPets should be watched carefully while eating bones.【解析】细节理解题。根据最后一段中的“If pet owners choose to feed bones to their pets，they should watch their pets carefully when they are eating bones”可知，该段建议人们，当宠物吃骨头时，主人应当仔细观察，以防宠物被骨头卡住，故D项正确。【答案】DBIf you are sending a text message, watching TV or listening to the radio, you may stop and give this your full attention.Multitasking shrinks(使萎缩) the brain, research suggests.A study found that men and women who frequently used several types of technology at the same time had less grey matter in a key part of the brain.University of Sussex researchers said, “Using mobile phones, laptops and other media devices simultaneously could be changing the structure of our brains.”Worryingly, the part of the brain that shrinks is involved in processing emotion.The finding follows research which has linked multitasking with a shortened attention span, depression, anxiety and lower grades at school.The researchers began by asking 75 healthy men and women how often they divided their attention between different types of technology.This could mean sending a text message while listening to music and checking email, or speaking on the phone while watching TV and surfing the internet.The volunteers were then given brain scans which showed they had less grey matter in a region called the anterior cingulate cortex (ACC)(前扣带皮质)Scientists have proved that brain structure can be changed on exposure to fresh environments and experience.Other studies have shown that trainingsuch as learning to play magic tricks or taxi drivers learning the map of Londoncan increase greymatter densities(密度) in certain parts.Experts have also warned of the harmful impact technology can have on our memory and attention span.The University of California team conducted a survey of more than 18,000 people aged between 18 and 99, and found 20% had problems with memory.Researchers were shocked greatly by the 14% of 18 to 39yearold people who also worried about their memories.Multitasking may shorten attention span, making it harder to focus and form memories, the researchers said, adding that youngsters may be particularly affected by stress.【语篇解读】这是一篇科普小品文。主要谈到多任务通过影响人类大脑灰质的密度，从而影响着人类的日常生活。通过多任务所带来的负面影响，阐释了短文主旨：多任务能够使大脑萎缩。5The underlined word “simultaneously” in Para.2 means“ _”Aon ones ownBat no timeCat the same time Dby accident【解析】推理判断题。由第一段所述可知，多功能够使人的大脑萎缩；由第二段可知，经常使用多种类型的技术的男性或女性在大脑的关键部分有较少的灰质。综合这两点就可以推断出该词意思是“同时”，故选C。【答案】C6. All of the following are possible effects of multitasking EXCEPT _.Asaving timeBa shortened attention spanClower grades at schoolDdepression and anxiety 【解析】事实细节题。由第三段“The finding follows research which has linked multitasking with a shortened attention span, depression, anxiety and lower grades at school.”一句可以看出，多任务已经和学生在学校缩短的注意力、抑郁、焦虑和成绩低下等联系在一起了，文中并没有提及节省时间。故选A。【答案】A7What can increase greymatter densities?ASending a text message while listening to music.BStudents doing their homework.CTaxi drivers learning the map of London.DSpeaking on the phone while watching TV.【解析】事实细节题。从第五段“.learning to play magic tricks or taxi drivers learning the map of Londoncan increase greymatter densities (密度)in certain parts.”一句可以看出，某些训练能够增加大脑某个区域灰质的密度。【答案】C8. In which section of a newspaper can the passage be found?AEntertainment. BEconomy.CTourism. DScience.【解析】推理判断题。本文讲的是多任务影响大脑中灰质的密度，从而影响人们的日常生活，故可以推理出该文属于科学类。因此选D。【答案】D.语法填空Although Socrates(苏格拉底) was poor all his life，he never asked his pupils to pay for their lessons.He taught 1._ the love of wisdom，not for money.And 2._ he had to say was always new and worth hearing.All his pupils loved him.But his unusual ways of teaching and his demand that students always asked questions made him some 3._ (danger) enemies.The rulers did not want to be questioned.So they 4._(false) accused Socrates of teaching young men bad things and 5._(lead) them to ignore religion.In fact Socrates was a very religious man.His enemies had him 6._(arrest)，and he was sentenced to death by poisoning.During the 30 days before he was put to death，h