（湖北卷）高中英语 Unit 2　Cloning Using Language课时作业（含答案分析）新人教教版选修8.doc

using language.单词拼写1the new aircraft has performed very well in its _ (最初的)trials.2three of the chickens _ (孵出) today. 3the _ (羽毛) of a pigeon can bring you good luck!4he gave me a _ (合理的) explanation.5i _ (只是) suggest you should do it again.6she put some _ (装饰) on the christmas tree.7the great _ (缺点) to living near a main road is noise.8a little baby is _ (不能的) to walk or talk.9its traditional in england to eat _ (火鸡) on christmas day.10we tried in _(徒劳的) to persuade him to go with us.多项选择1a bright idea suddenly _ me that i could use the money i saved to help a poor student in the countryside.astruckboccurredchappened dhurt2(2013武汉高二质检)she wants to find a job in the kindergarten because she _ working with children.aadores badmirescdreams davoids3he is in good_for a man of his age.acondition batmosphereccase dsituation4do you often go fishing at weekends?not often，i only go fishing _.aat one time ball the timecat a time dfrom time to time5(2013许昌高二检测)he is a _person and will understand your delay.aavailable bcomfortablecconvenient dreasonable6the work we have done has brought great benefits.we are happy that our efforts are not _.ain use bin needcin vain din order7(2013宜昌高二调研)she was on a diet，but she couldnt _ eating sweet food.consequently，her weight was gained again.aremove bresistcreject dobject8are you sure that alice is honest?no.thats _ a guess of ours.acertainly bhardlycmerely dnearly9the _ talks between china and the united states were the base of the later agreement.aoriginal bprimarycinitial dprimitive10one of the _ of french agriculture is short of farm labour.adisadvantage bdrawbackcdisaster dmistake.阅读理解aa team of michigan state university(msu) researchers has developed a new，more efficient way of cloning zebra fish，a breakthrough that could have an impact on research into human health.zebra fish are quickly becoming the animal of choice for many researchers.“after mice，they are the most commonly used vertebrates，that is，animals with backbones，in genetic studies，”says jose cibelli，the leader of the team.“they are used in cancer and heartdisease research because they have many of the same genes as people have.”for more than 20 years，zebra fish have also served as an excellent model for understanding both normal development and birth imperfections.more recently，research with zebra fish has extended to modeling human diseases.traditional cloning uses an egg and a donor(捐赠者) cell.the dna is removed from the egg and replaced by the dna taken from the donor.the resulting fish is an exact genetic copy of the donor.in cibellis technique，the egg is removed from the female zebra fish and placed in the ovarian(卵巢的) fluid of a chinook salmon，another kind of fish，before the donor cell is placed into the egg.the previous methods of cloning zebra fish had very low survival rates.with the new technique，the number of cloned fish is increased by 15 percent.what makes zebra fish so useful in research is that their eggs are transparent(透明的)，making the fishs development easy to follow.improving zebrafish cloning techniques is also important because currently the mouse is the only good model for genetic research.“so far the mouse is the only animal from which you can delete genes in a reliable way，”cibelli says.“what researchers do is mutate(使变异) a gene，destroy its function completely，and then study the consequences.”1. what do we learn about zebra fish from the text?athey can be used to cure human diseases.bthey have been used in genetic studies for 20 years.cthey are the only vertebrates used in cloning.dtheir survival rates are increased by the new method of cloning.2. researchers choose zebra fish for genetic research because _.athey have the same genes as human beingsbthey are a kind of vertebratectheir genes can be changeddtheir eggs are easy to observe3. we can infer the following from the text except that _.athe zebra fish cloning technology may provide a new model for genetic researchbmice will not be used in genetic research any morecexperimental results on zebra fish may apply to human beingsdjose cibelli led the new research of cloning zebra fish4whats the text mainly about?ahow cloning has developed.ba study of a new way to clone zebra fish.ca breakthrough in research into human health.dzebra fish，the best model for genetic research.bwith all the lowfat and fatfree products on the market，youd think reducing fat intake would be the surest way to greater health.in fact，there is such a thing as too little fat.strange but true：eating without fat can lead to vitamin deficiencies(维生素缺乏症)thats because some vitamins require fat to be taken into the body and to do their jobs，which include providing energy，keeping the body working normally and supporting the body to fight against disease，for a start.vitamins are necessary，which means fats are necessary，too.dietary fat，which comes from the food you eat，is crucial to the intake of the vitamins soluble(可溶的)in fat，which includes vitamins a，d，e and k(vitamin c，needed for healthy teeth，doesnt need fat) among them，vitamin a is necessary for good eyesight，and vitamin d for bone health.when vitamins which are soluble in fat are taken in，they move from the mouth to the stomach and then to the small intestine(小肠)fats can move across the cell walls(细胞壁) of the small intestine and enter the bodys general movement of blood.any vitamins in that fat are taken into the body as well.the vitamins are then carried to the liver(肝脏)，where theyre stored until the body needs them.without enough fat in your diet，your body cannot successfully take in the fatsoluble vitamins that are necessary to your health.however，the types of fat you eat matter a lot.there are some important rules to follow，including：avoid unhealthy fats and plant fats are best.besides，eat healthy oils.last but not least，dont overdo it.you only need a small amount of fat to help take in vitamins.just a little with any vitaminrich meal and itll get those vitamins into position to do some good.5the first paragraph mainly talks about _.awhy lowfat products are popularbthe best way to stay healthycthe importance of different vitaminsdthe important part that fat plays6eating fatfree meals can result in the shortage of vitamins because _.asome vitamins can be taken in with the help of fatbvitamins are sometimes hard to be taken inceating without fat makes the body too weakdfatfree meals make people eat fewer vegetables7which of the following might be the result of fatfree diets?abad teeth. boverweight.chair loss. dsoft bones in legs.8how many tips are mentioned on taking in fat?atwo. bthree.cfour. dfive.课时作业(四).1.initial2.hatched3.feather4.reasonable5.merely6.decorations7.drawback8.unable9turkey10.vain.1.a句意：我突然有了一个很好的想法我可以用存下来的钱帮助农村的一名贫困学生。strike在此意为“突然想到”，为及物动词；occur作“突然想到”解时，为不及物动词。2a句意：她想在幼儿园找份工作，因为她喜欢和孩子们在一起。adore“崇拜，爱慕，喜爱”；admire“赞美，羡慕”；dream“做梦，梦见”；avoid“避免”。3a考查名词词义。in good condition意为“状况良好”。atmosphere“气氛”；case“情况”；situation“形势”。4d考查介词短语。at one time“曾经”；all the time“始终”；at a time“每次”；from time to time“有时”。由句意可知d项正确。5d考查形容词词义辨析。available “可用的”；comfortable“舒服的”；convenient“方便的”；reasonable“合理的，讲道理的”。由句意可知d项正确。6c根据“the work we have done has brought great benefits.”可知我们所做的工作带来了很大的成效，所以我们的努力没有白费。“in vain”意为“徒劳，白费力气”，符合题意。7b句意：她在节食，但她抵制不了甜食。结果她的体重又增加了。remove“移走”；resist“抵制”；reject“抛弃”；object“反对”。由句意可知b项正确。8cmerely意为“仅；只；不过”。certainly一定，必定，当然；hardly几乎不；nearly差不多，几乎。根据否定回答可知c项正确。9cinitial“最初的，开始的”；original“最早的，最先的”；primary(在时间、顺序或发展上依靠的)“第一的，基本的，主要的”；primitive“原始的”。根据句意选c项。10b句意：法国农业发展的障碍之一是缺乏劳动力。drawback指人或事物前进发展时的不利因素，“不利的缺点、障碍”，符合句意。disadvantage“不利，弱点”；disaster“灾难”；mistake“错误，过失”。.1.d根据第五段最后的“.the number of cloned fish is increased by 15 percent.”可以知道，这种新的克隆技术可以大大提高克隆斑马鱼的成活率。2d根据第六段的“what makes zebra fish so useful in research is that th