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
42
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
ThemostdramaticchangesthattookplaceduringtheseventeenthcenturyinFrenchculinarytechniquesconcernseasoning.Thest
In1755BritishwriterSamuelJohnsonpublishedanacerbiclettertoLordChesterfieldrebukinghispatronforneglectanddecli
PART1Theexaminerwillaskyouquestionsaboutyourself,suchas:—What’syourname?—Whatnationalityareyou?—Whatpart
Discussiontopic:CitiesandCountrysideExamplequestions:•Compareandcontrastlifeincitiesandthecountrysideinyourco
3.PART3Discussiontopic:SuccessExamplequestions:•Inyourcountry,howissuccessdefinedormeasured?•Whatgoalsdomo
Shouldfilmsbecensoredorshouldwebefreetochoosewhateverwewanttosee?
Somepeoplesaythatcensorshipshouldbecancelledcompletely.Doyouagreeordisagreewiththestatement?Giveyourspeci
Nowadays,moreandmoreworkcouldbecompletedbythemachineorrobotswithartificialintelligence.Dothepositiveeffectso
Questions28-29Completethenotes,whichshowhowtheapproachestodefining’talent’havechanged.ChooseONEorTWOWORDSfro
Questions28-29Completethenotes,whichshowhowtheapproachestodefining’talent’havechanged.ChooseONEorTWOWORDSfro
随机试题
A公司为上市公司,A公司持有B公司100%的股权,B公司为A公司的全资子公司。A公司持有C公司20%的股权,对C公司有重大影响。2×16年3月31日,B公司和C公司出资新设D公司,其中B公司以办公大楼出资,持股60%并控制D公司。C公司以30000万元银行
驾驶机动车通过居民小区遇到这种情况怎样处置?(图3.14.2)
算法是对问题求解过程的一种描述,“算法中描述的操作都是可以通过已经实现的基本操作在限定的时间内执行有限次来实现的”,这句话所描述的性质被称为算法的___________。
根据我国《著作权法》的规定,对该小说享有著作权的是()。孙某将该小说改编成电视剧本,应当()。
做土的有机质含量试验时,溶液由橙黄色经蓝绿色突变为橙红色时即为终点。()
下列关于共同市场的表述正确的是______。
目前,旅行社提供的常规性单项服务项目有()。
2012年我国全年累计生产黄金403.1吨,同比增加42.1吨。其中,黄金矿产金完成341.8吨,比去年同期增长13.18%;有色副产金完成61.3吨,比去年同期增长3.9%。黄金成品金产量排名前五位的省份(区)分别是:山东省、河南省、江西省、云南省和内蒙
RTOS响应时间的具体指标不包括如下哪一项?()
在窗体上画一个文本框,其名称为Text1。为了在程序运行后Text1中的文本不可编辑,应当使用的语句是______。
最新回复
(
0
)