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 In current juni
Complete the sentences below. Write NO MORE THAN TWO WORDS for each answer. Saving the juniper plant Background In current juni
admin
2014-11-08
60
问题
Complete the sentences below.
Write NO MORE THAN TWO WORDS for each answer.
Saving the juniper plant
Background
In current juniper populations, ratios of the______are poor.
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
sexes
解析
转载请注明原文地址:https://kaotiyun.com/show/94AO777K
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
AbolitionistFrederickDouglass’movetoRochester,NewYork,in1847wasamajorstepinhisfindinghisownintellectualpath.
RecentstudiesofthePhilippinefruitbatfaunahaveconfirmedsomeprevioushypothesesregardingbatsonoceanicislands:for
Discussiontopic:CitiesandCountrysideExamplequestions:•Compareandcontrastlifeincitiesandthecountrysideinyourco
Discussiontopic:FamousPeopleExamplequestions:•Dofamouspeoplehavespecialresponsibilitiestosociety?•Somefamouspe
Canyougivesomesuggestionsabouthowtochooseacollegemajor?
Youhaveafriendwhoisabouttoenteruniversity.Hewantstoaskyouwhetherheshouldchoosehistoryorcomputerscience.
Nowadays,moreandmoreworkcouldbecompletedbythemachineorrobotswithartificialintelligence.Dothepositiveeffectso
Describethetrendinthechartbelow.ThegraphshowsthepercentageoftheUKadolescentsfollowingvegetariandiet.
Questions28-29Completethenotes,whichshowhowtheapproachestodefining’talent’havechanged.ChooseONEorTWOWORDSfro
Questions28-29Completethenotes,whichshowhowtheapproachestodefining’talent’havechanged.ChooseONEorTWOWORDSfro
随机试题
薪酬管理的原则包括()
解释下列括号内的词语:千里澄江似练,翠峰如(簇)。
王某,女,56岁,反复腹大胀满4年。现腹大胀满,入暮尤甚,脘闷纳呆,面色萎黄,神倦怯寒,肢冷浮肿,腰膝酸软,小便不利,大便溏薄。舌淡胖,苔白腻,脉沉细无力。查体:腹部触诊见肝区压痛,叩诊有移动性浊音。宜辨证
患者,女性,36岁。阑尾炎切除术后3天肠蠕动仍未恢复,为减轻腹胀,最简单、有效的措施是
下列业务不得抵扣进项税的有()。
信用产生于货币作为()职能。
使用______发布的广告不属于网络广告。
计算机病毒是指“能够侵入计算机系统并在计算机系统中潜伏、传播、破坏系统正常工作的一种具有繁殖能力的()”。
硬盘的一个主要性能指标是容量,硬盘容量的计算公式为
Rockclimbingisanactivityinwhichparticipantsclimbup,downoracrossnaturalrockformationsorartificialrockwalls.Th
最新回复
(
0
)