首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Complete the sentences below. Write NO MORE THAN TWO WORDS for each answer. Saving the juniper plant Background Many of the bus
Complete the sentences below. Write NO MORE THAN TWO WORDS for each answer. Saving the juniper plant Background Many of the bus
admin
2014-11-08
69
问题
Complete the sentences below.
Write NO MORE THAN TWO WORDS for each answer.
Saving the juniper plant
Background
Many of the bushes in each group are of the same age so______ of whole populations is rapid. Solutions
Narrator: You will hear an Environmental Studies student giving a presentation about his project on saving an endangered species of plant. Now you have some time to look at Questions 31-40. Now listen and answer Questions 31-40
Student: For my presentation, I’m going to summarise what I’ve found out about efforts to save one plant species ... the juniper bush. It once flourished in Britain and throughout the world’s temperate zones, but over the last few decades has declined considerably. Before I go on to explain the steps being taken to save it in England, let me start by looking at some background information and why the juniper has been so important in cultural as well as ecological terms, historically and in the present day. Firstly, I want to emphasise the fact that juniper is a very ancient plant. It has been discovered that it was actually amongst the first species of plants to establish itself in Britain in the period following the most recent Ice Age. And, as I say, it has a much valued place in British culture. It was used widely as a fuel during the Middle Ages because, when burnt, the smoke given off is all but invisible and so any illicit activities involving fire could go on without being detected, for example, cooking game hunted illegally. It also has valuable medicinal properties. Particularly during large epidemics, oils were extracted from the juniper wood and sprayed in the air to try to prevent the spread of infection in hospital wards. And these days, perhaps its most well known use is in cuisine...cooking, where its berries are a much-valued ingredient, used to flavour a variety of meat dishes and also drinks.
Turning now to ecological issues, juniper bushes play an important role in supporting other living things. If juniper bushes are wiped out, this would radically affect many different insect and also fungus species. We simply cannot afford to let this species die out.
So, why is the juniper plant declining at such a rapid rate? Well a survey conducted in the north and west of Britain in two thousand and four to five showed that a major problem is the fact that in present-day populations, ratios between the sexes are unbalanced and without a proper mix of male and female, bushes don’t get pollinated. Also, the survey found that in a lot of these populations, the plants are the same age, so this means that bushes grow old and start to die at similar times... leading to swift extinction of whole populations.
Now, the charity Plantlife is trying to do something to halt the decline in juniper species. It’s currently trying out two new major salvage techniques, this time focusing on lowland regions of England. The first thing it’s trying is to provide shelters for the seedlings in areas where juniper populations are fairly well established. These, of course, are designed to help protect the plants at their most vulnerable stage. A further measure is that in areas where colonies have all but died out, numbers are being bolstered by the planting of cuttings which have been taken from healthy bushes elsewhere.
Now, I hope I’ve given a clear picture of the problems facing this culturally and ecologically valuable plant and of the measures being taken by Plantlife to tackle them. If anyone has any questions, I’d be happy to ...
选项
答案
extinction
解析
转载请注明原文地址:https://kaotiyun.com/show/n4AO777K
本试题收录于:
雅思听力题库雅思(IELTS)分类
0
雅思听力
雅思(IELTS)
相关试题推荐
Projectingtheideaofadistinctivefemaledemandinseventeenth-andeighteenth-centuryEnglandwasagroundbreakingdeparture
PART1Theexaminerwillaskyousomequestionsaboutyourself,suchas:—Whatpartofyourcountrydoyoucomefrom?
Discussiontopic:Films/MoviesExamplequestions:•Towhatextentdoyouthinkthatmostfilmsarerealistic?•Doyouthinkth
Discussiontopic:FamousPeopleExamplequestions:•Dofamouspeoplehavespecialresponsibilitiestosociety?•Somefamouspe
Whatsortsoffilmsdoyouthinkarenotsuitableforchildren?
Doyouthinkthatpeoplereadnowadaysastheydidinthepast?
Manydevelopingcountriesarecurrentlyexpandingtheirtouristindustries.Whyisthecase?Isitapositivedevelopmen
Inmanycountrieschildrenareengagedinsomekindofpaidwork.Somepeopleregardthisascompletelywrong,whileotherscons
Describethetrendinthechartbelow.ThegraphshowsthepercentageoftheUKadolescentsfollowingvegetariandiet.
Questions28-29Completethenotes,whichshowhowtheapproachestodefining’talent’havechanged.ChooseONEorTWOWORDSfro
随机试题
X2012型龙门铣床的工作进给和快速移动的调速系统是晶闸管一直流电动机无级调速传动系统。其调速范围为50:1,静差度小于15%。()
处理器的分配在逻辑上是分两级进行的,它们分别是
IFG是指
一般来说,合同的保证人不能是()。
下列各项中,应计入产品成本的是()。
下列有关图2中蛋白质的叙述,正确的是()。
“编筐编篓,家家都有”,草编曾在日常生活中随处可见。但随着传统手工艺市场逐渐被工业化挤占,加上传统手工艺传承者少、产品难以推广,草编似乎越来越不受人“待见”。然而,在滨州博兴县锦秋街道湾头村,古老的草编搭上互联网的快车后,迅速打开了市场,焕发出勃勃生机。这
我国幅员辽阔,各地各方面的差异很大,为了使教学不脱离实际而补充必要的乡土教材,贯彻的教学原则是()。
阅读下面的文言文,完成下列问题。晚游六桥待月记袁宏道西湖最盛
近几年来,一个新的群体日益受到社会的广泛关注,他们一般在20岁左右,跟随打工的父母在城市长大,受教育程度普遍不高,生存环境较差,既不是传统意义上的农村人,也不是地地道道的城市人,被称为“农民工第二代”。请你谈谈对这一社会现象的认识。
最新回复
(
0
)