目录 第1天 雅思阅读考试概述 Lessons from the Titanic 第2天 大意题型 1.Signs of Success 2.A Stubborn, Taxing Problem 3.Tea Times 4.Mary Wollstonecraft 5.Glass 第3天 大意题型巩固 1.From Black Box to Blue Box 2.Fat of the Land 3.A Modest Undertaking 4.Leisure Time 5.The History of Writing 6.Historical Thermometers 7.Parenting and Responsibility 8.What Is a Dinosaur? 9.Hair Today 第4天 细节题型(一):简答题/填词题/选择题/分类题 1.The 5000-mile National Cycle Network 2.Environmental Impact of Mining on People 3.Where Are the Jobs? 4.The Blueberries of Mars 5.Another Intelligence? 6.Recycling Britain 7.Things Fall Apart 8.Mobile Telecommunications 第5天 细节题型(一)巩固练习 1.In or Out? 2.The Brain and Intelligence 3.UNICEF, Malnutrition and Micronutrients 4.Social Impact of Mining 5.Under Water 6.Government in Aboriginal Societies 7.Of Ducks and Duck Eggs 第6天 细节题型(二):判断题/回填题/配对题 1.The Creation Myth 2.A New Menace from an Old Enemy 3.The Politics of Pessimism 4.Recycling Plastics 5.Asbestos Inhalation 第7天 细节题型(二)巩固 练习 1.Pronunciation and Physiognomy 2.Prosecuting Corporate Fraud 3.Wheres the Lawyer? 4.Turning up the Heat in the Greenhouse 5.Why Women Have to Work 6.How Fire Leapt to Life 7.Circadian .Rhythms of a Day 第8天 阶段性复习 1.Warnings to Be Ignored 2.Just Relax 3.Money as the Unit of Account 第9天 态度/观点题型 1.Too Few Women at the Top Is Not Just a Science Problem 2.Left out or Left behind 3.Before Disaster Strikes 4.A Constitution for Europe 5.Beware the Natives and Their Norms 第10天 态度/观点题型巩固练习 1.Were Patently Going Mad 2.Free Lunch for All 3.Risk Management for the Masses 4.Playing with Fire 5.The Siren Song of the Outsider 6.Weapons of Mass Salvation 第11天 总结题型 1.Sports and Recreation 2.The Greenhouse Effect 3.The Changing Nature of Careers 4.Automobiles vs.Public Transport 5.Paper Recycling 第12天 总结题型巩固练习 1.Locked Doors, Open Access 2.Fermented Foods for Babies 3.Political Parties in U.K. 4.What Happens When Lightning Strikes an Airplane? 5.Domestic Pets in New Urban Areas 6.The Tourist Industry 7.Homeopathy 第13天 图表题型 1.Numeraey Centre 2.Information for Students at the Language and Culture Center 3.Reaching for the Sky 4.Garbage in, Garbage out 5.Destination for International English Students 第14天 图表题型巩固练习 1.Fashion and Society 2.Hazardous Compound Helps to Preserve Crumbing Books 3.The Dam That Changed Australia 4.Did Tea and Beer Bring about Industrialization? 5.The Beam-operated Traffic System 6.Hemp Revival 第15天 总复习 1.The Peacemakers 2.Team-based Learning 3.Jupiters Bruises 答案 附录:雅思阅读考试答题卡
内容摘要 Of Ducks and Duck Eggs For people who like to keep poultry, ducks offer certain advantages over hens. Ducks are immune to some common diseases found in hens and are less vulnerable to others. Some breeds of duck produce bigger eggs than hens, In addition, ducks lay eggs over a longer season than do hens. Poultry keepers with gardens have less to worry about if they keep ducks rather than hens because the former are less apt to dig up plants and destroy roots. While both hens and ducks benefit the garden by eating pests, hens are known to damage herb and grass beds. Ducks, on the other hand, will search for insects and snails more carefully. Only very delicate plants are at risk from the broad, webbed feet of ducks. Like all water-birds, ducks need access to water, and cluck keepers typically provide this by building a pond. Something this large is not absolutely necessary, however; ducks need only to be able to dip their heads in the water to keep their nostrils clean. If a pond is provided, though, it is important to keep ducklings away from it until they are old enough to withstand the cool temperature of the water——about eight weeks. When keeping ducks, one has to consider just how many the land will support. Generally the rule is 100 ducks per half hectare. If more than this proportion is introduced, there is a risk of compacting the soil, which can lead to muddy conditions for long periods as the rain is not easily absorbed into the ground. While ducks offer many advantages over hens, they must be given a greater quantity of food, especially if regular eggs are desired. An adult duck will eat between 170 to 200 grams of food a day. If the ducks have access to grass and a pond, they will be-able to find for themselves approximately 70% of their daily dietary requirements in warmer months but less than half that in colder times. Therefore, it is important that they be fed enough food, such as grain, every day. Experienced duck keepers raise ducklings every three years or so because it is after this period of time that clucks egg-laying powers begin to seriously weaken. If the aim is to hatch ducklings, keepers should be aware that not all ducks make good mothers, and that certain breeds of duck appear to be worse than others. The poor mothers abandon their eggs a few clays after laying them. A sure way of making sure the rejected eggs hatch is to place them next to chicken eggs under a hen. The eggs of ducks as food for humans have a mixed reputation. This is because of a number of cases of salmonella food poisoning in Europe in the 1970s. Although it was never conclusively shown that duck eggs were to blame, the egg-eating public stopped buying and many cluck egg producers went bankrupt. ......
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