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
Saving the juniper plant Background Juniper was one of the first plants to colonise Britain after the last【L31】________ Its smok
Saving the juniper plant Background Juniper was one of the first plants to colonise Britain after the last【L31】________ Its smok
admin
2022-09-09
80
问题
Saving the juniper plant
Background
Juniper was one of the first plants to colonise Britain after the last【L31】________
Its smoke is virtually【L32】________, so juniper wood was used as fuel in illegal activities.
Oils from the plant were used to prevent【L33】________spreading.
Nowadays, its berries are widely used to【L34】________food and drink.
Ecology
Juniper plants also【L35】________several species of insects and fungus.
Problems
In current juniper populations, ratios of the【L36】________are poor.
Many of the bushes in each group are of the same age, so【L37】________of whole populations is rapid.
Solutions
Plantlife is trialling novel techniques across【L38】________areas of England.
One measure is to introduce【L39】________for seedlings.
A further step is to plant【L40】________from healthy bushes.
【L32】
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 insects 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
invisible
解析
录音原文的all but“几乎是”是virtually“几乎,差不多”的同义替换。
转载请注明原文地址:https://kaotiyun.com/show/umnD777K
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
需求分析阶段的任务是()。
关系数据库管理系统能实现的专门关系运算包括()。
滨海市对重点中学组织了一次物理统考,并生成了所有考生和每一个题目的得分。市教委要求小罗老师根据已有数据,统计分析各学校及班级的考试情况。请根据考生文件夹下“Excel素材.xlsx”中的数据,帮助小罗完成此项工作。具体要求如下:将“Excel素材.xl
2012级企业管理专业的林楚楠同学选修了“供应链管理”课程,并撰写了题目为“供应链中的库存管理研究”的课程论文。论文的排版和参考文献还需要进一步修改,根据以下要求,帮助林楚楠对论文进行完善。将文档中所有的文本“ABC分类法”都标记为索引项;删除文档中文
Lastyear,mybrotherandIwenttoMiamiforavacation.Someofmyfriendswhohadbeentherebeforesaid【K1】________wasawon
Thesubjectsinquestionnaireare
FeesandFundingThefeesare【L26】________peryeartodothecoursepart-time.Theuniversityhasa【L27】________itcanuseto
FeesandFundingThefeesare【L26】________peryeartodothecoursepart-time.Theuniversityhasa【L27】________itcanuseto
Whocantakepartineachoftheclasses?ClassparticipantsAchildrenandteenagersBadultsCallagesArtof
fitnesscentre
随机试题
下列方法中不能单独使用,必须与其他基本方法相结合使用的是【】
按照审计所依据的基础和使用的技术分类,审计可分为()
37岁孕34周,出现食欲减退、恶心、呕吐、腹胀、低热等不适,同时出现尿色深黄,查体发现巩膜黄染、血ALT140U/L,总胆红素2mg/dl,血压140/90mmHg,胎头浅定,胎心140次/分。该孕妇的诊断应该是
A.躺床保胎治疗B.健脾和胃,降逆止呕C.活血祛瘀下胎D.未孕前重防,已孕后重治E.补脾胃,滋化源,养精血,益胎元
根据《房屋建筑与装饰工程工程量计算规范》(GB50854—2013),关于桩基础工程的工程量计算规则,正确的说法是()。
儿童具有好奇心强、好模仿的特点,这就要求幼儿教师的工作具有()
监护人处分被监护人的财产,必须()。
研究人员的一项研究结果显示,经常使用智能手机的人,他们的大脑功能、认知能力、语言以及数学技能均低于那些不常使用智能手机的人。研究人员就此警告人们,避免花费过多时间在智能手机上,因为经常使用智能手机会降低智商。以下哪项如果为真,最能削弱上述观点?()
网络操作系统尽管有多种不同的品牌,其功能与结构也各有差异,但主要分为【 】和对等式两大类。
A、Hebroughtfoodwithhimwhenhegotonthetrain.B、Heboughtfoodfromthelocalpeopleonthetrain.C、Heboughtfoodsold
最新回复
(
0
)