高中英语 Unit 4 Wildlife Protection Period Four课时作业 新人教版必修2.doc

Unit 4 Wildlife Protection Period Four Period FourGrammar & Writing.根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。Little-known facts about germsGerms are everywhere and in so many forms._1_ There are some steps you can take to help prevent the spread of germs in your personal space.Computer keyboards can have more germs than a public toilet.Keys and spaces on a keyboard are main breeding grounds for bacterial and viral growth._2_ Clean your keyboard regularly with specialized wipes for electronics, and remove dust with an air duster._3_While it seems to make sense that covering your toothbrush would protect, the opposite is the case.With a cover on your brush, a more humid environment is created and more likely to encourage growth of germs.Wash your toothbrush when done, and allow it to air dry.Make sure you store it away from the toilet.Hand sanitizer(洗手液) does not always replace soap and water washing.Hand sanitizer is great when youre not near a sink, and need to clean your hands.But given the choice of a spritz of sanitizer or good old soap and water, choose the soap and water route._4_ Lather up and scrub hard for at least 20 seconds, and wash between your fingers and the back of your hands.Dont skimp with the hand sanitizer eithercover the same hand areas as for soap and water._5_ If you freeze foods that you suspect might be spoiled, freezing them will not kill the germs already in the food.Freezing prevents further bacterial growth, but when you thaw it out, the bacteria continue to increase and pollute your food.AFreezing food does not kill germs.BTry not to eat outside especially in summer.CExposure to germs can lead to many illnesses.DToothbrush covers do not protect your brush from bacteria.EThere are a lot of effective ways to get rid of germs in your house.FSoap and water are only a better germ fighter when done properly.GSome reports show five times more germs on a keyboard than on a public toilet.答案1.C本文第一段为主题段，说明细菌无处不在，形式多样，可以产生许多疾病，以下几段是说明一些知之甚少的关于细菌的实事以及应该采取的不受细菌伤害的方法。选项C说明细菌会产生很多疾病，应该属于主题段内容。故选C。2G本段标题为“计算机键盘比公共厕所有更多的细菌”，选项G正是说明了一些报告显示计算机键盘比公共厕所的细菌多5倍，符合本段标题。故选G。3D本段内容主要说明牙刷盖不能保护你的牙刷不受细菌的侵入。故选项D可做本段的标题。4F本段说明洗手液不能代替肥皂和水洗。选项F正是说明肥皂和水洗如果正确使用是最好的祛除细菌的方法。故选F。5A本段说明冷冻食品不能杀死细菌。本段中的freezing them will not kill the germs already in the food.提示了该空格应该选A。.阅读理解The sea is home to billions of plants and animals.Many live only near the sunlit surface.Oceanographers classify marine living beings by separating them into two main groups: plants and animals.There are two general types of plants found in the ocean, those having roots that are attached to the ocean bottom and those not having roots which simply drift about with the water.The rooted plants in the ocean are only found in shallow water because there is not enough sunlight to sustain photosynthesis(光合作用) in deeper waters.Since sunlight does not pass more than a few hundred feet into the ocean, most of the ocean is not capable of supporting rooted plants.The most plenty plants in the ocean are known as phytoplankton(浮游生物)These are usually singlecelled, minute floating plants that drift throughout the surface waters of the ocean.To grow, phytoplankton need nutrients from the sea water and lots of sunlight.Marine animals are divided into three groups: zooplankton, nekton, and benthos.Zooplankton are drifting animals and are usually small, however, they can grow to fairly large size.For example, the jellyfish and the Portuguese manofwar are examples of larger types of zooplankton which are unable to propel(推进) themselves effectively.Nekton are the free swimmers and probably the largest portion of familiar animals found in the ocean belong to this class.Common fishes, the octopus, whales, eels and squid are all examples of nekton.The third type of sea animal spends its entire life on or in the ocean bottom.This group of marine animals is called the benthos.Some of these creatures, such as lobsters and snails, may be able to move about on the bottom but their lifestyle is so bound up with the ocean floor that they are unable to survive away from this environment.【语篇解读】海洋是成千上万种动物和植物的家乡。海洋植物主要有两种：有根植物和浮游植物；海洋动物大体可分为三类：浮游动物、游泳动物和海底动物。1The text mainly tells us something about _Amarine plants and marine animalsBtwo types of sea plantsCthree kinds of sea animalsDsmall and big animals in the ocean答案A主旨大意题。本文主要讲述了海洋生物的分类(海洋植物和海洋动物)以及他们的特点。2Why cant we find the rooted plants in deep water of the ocean?ABecause there are too many rocks at the bottom of the ocean.BBecause the rooted plants cant stand the coldness of the ocean.CBecause there is not enough sunlight for them in deep water.DBecause the rooted plants need more sunlight than plants which have no roots.答案C细节理解题。根据第二段可知，有根植物不生存在很深的海底是因为那儿没有充足的阳光来进行光合作用。3One of the characteristics of Zooplankton is that _Athey are small and never grow to large sizeBsome of the Zooplankton cant swim effectivelyCthey can swim freely in deep water of the oceanDthey need more sunlight than other animals in the ocean答案B细节理解题。根据倒数第三段最后一句可知，有些Zooplankton不能自己有效地推进自己，也就是说它们不能有效地游泳。4According to the last paragraph, we can conclude that _Abenthos live on the surface of the ocean waterBsome of the benthos cant live without the ocean floorCbenthos spend most of their time swimming in the oceanDbenthos can move about in the middle of the sea water答案B细节理解题。根据短文最后一句可知benthos离开海底不能生存。.完形填空When my husband, Bob, died very suddenly in January 1994, I received_1_ from people I hadnt_2_ in years: letters, cards, flowers, calls and visits.I_3_grief, supported by this outpouring of_4_ from family, friends and even mere acquaintances(相识但不熟悉的人)One message touched me deeply.I_5_ a letter from my best friend from sixth grade through high school.We had_6_ somewhat since graduation in 1949, as she stayed in our home town and I had not.But it was the kind of_7_ that could quickly begin again even if we lost_8_ for five or ten years.Her husband, Pete, had died perhaps 20 years ago at a young age，_9_ her with deep sorrow and heavy_10_：finding a job to gain money and_11_ three young children.She and Pete, like Bob and I, had shared one of those rare, close, “love-of-your-life-you-can-never-forget” relationships.In her letter she_12_ a short interesting story about my_13_She wrote, “When Pete died, your dear mother_14_ me and said, Trudy, I dont know what to say.so Ill just say I love you.” She closed her letter to me and_15_ my mothers words of so long ago, “Bonnie, I dont know what to say.so Ill just say I love you.” I felt I could almost_16_ my mother speaking to me now.What a(n)_17_ message of sympathy! How dear of my friend to_18_ it all those years and then_19_ it on to me.“I love you”_20_ words.A gift.I will never forget these words and I will pass them on to others like my mother and my friend.1A.solution Bcommunication Csympathy Dsorrow答案C根据下面的letters, cards, flowers, calls and visits可知，在丈夫去世以后，作者收到的是人们的同情。文章最后也有提示。2A.heard from Bcared about Cdepends on Dcame about答案A收到信、卡片等用动词词组hear from。3A.published Bdefeated Cconsidered Dexperienced 答案B有那么多家人、朋友和相识但不熟悉的人的关爱，作者战胜了悲伤。4A.love Bhappiness Cprotection Dopportunity答案A根据前面的supported by可知作者获得的应该是来自别人的爱。5A.accepted Bwrote Cdelivered Dreceived 答案D根据from my best friend from sixth grade through high school 可知，应该用receive。receive a letter“收到一封信”。6A.separated Bintroduced Cforgiven Dleft答案A根据后面句子的意思可以判断，“我们”自1949年毕业后分开。她呆在我们的家乡而作者没有。7A.agreement Bappointment Cfriendship Dbehavior 答案C虽然分别好多年了，但这种友谊还是能够很快再开始的。8A.temple Binterview Cdesire Dtouch答案Dlose touch“失去联系”。根据句子意思“即使我们失去联系我们的友谊也能很快再次开始”，可知，此空填touch。9A.turning Bexpressing Cleaving Dentertaining 答案C丈夫在20年前去世，给她留下了深深的悲伤。10A.impressions Bresponsibilities Cproblems Ddebts答案B通过下面的finding a job and _ three young children可知，丈夫的死给她留下了很重的责任。文章中没有提到丈夫给她留下沉重债务的事。11A.raising Bdressing Cconducting Dcharging答案A丈夫死后，她要找工作，还要养活三个孩子。raise children“养孩子”。12A.shared Bmade Cforgot Ddoubted 答案A在她写给我的信中，她和我一起“分享”了有关我母亲的一个有趣的故事。其他选项不符合短文意思。13A.husband Bmother Cchild Dfriend答案B从下文的When Pete died, your dear mother.可知，她向我讲述的是关于我妈妈的故事。14A.admired Bthreatened Cpromised Dhugged答案D此处用 “hug”表明我的妈妈对她的关爱和安慰。15A.removed Brepeated Cintended Doperated 答案B根据下面的“Bonnie, I dont know what to say .so Ill just say I love you.”可知，她在重复我妈妈说过的话。16A.suffer Bdirect Cconfuse Dhear答案D根据my mother speaking to me now可知，作者感觉到自己正在听(hear)妈妈对自己说的话。17A.terrible Benergetic Cpowerful Dinteresting答案C从短文的内容可以判断妈妈对别人表示同情的话是多么有力量，很多年后还让人记住。18A.cherish Bdebate Cscan Dseek答案A我的朋友自今还记住(珍爱着)我妈妈的话。其他选项不能表达这个意思。19A.choose Bpass Cinform Drelate答案Bpass on“传递”，符合句子意思。其他三个选项不能与on搭配。20A.Perfect BTalented CCritical DCurrent答案A根据整篇短文的内容，作者认为 “I love you”是一句非常完美的语言，他能是人们感觉到别人对自己的关爱。.应用文写作假如你是李华，你的美国笔友Mike打算暑假期间外出远足。因为他听说你有远足的经验，所以来信询问远足需要注意哪些问题。请你给他写封回信，说明远足应该注意的事项。内容要点如下：1最好与