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
42
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.
【L31】
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
ice age
解析
录音原文的following the most recent“紧跟着最近的……”是对题目中after the last“在最后的…之后”的同义表述。
转载请注明原文地址:https://kaotiyun.com/show/rmnD777K
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
有三个关系R、S和T如下:则由关系R和S得到关系T的操作是()。
函数fun的功能是:根据所给的年、月、日,计算出该日是这一年的第几天,并作为函数值返回。其中函数isleap用来判别某一年是否为闰年。例如,若输入:200851,则程序输出:2008年5月1日是该年的第122天。请在程序的下划线处填
关系数据库管理系统能实现的专门关系运算包括()。
下列关于输入流类成员函数getline()的表述中,错误的是
ItwasClark’sfirstvisittoEngland,andhewaslookingforwardtohisfirstjourneyonLondon’sUndergroundRailway.Against【
Apilotnoticedaballoonwhichseemedtobe【K1】________(make)foraRoyalAirForceStationnearby.Heinformedthestation
Makinggoodchoicesaboutyourownhealthrequiresreasonableevaluation.Akeyfirststepinbetteringyourevaluationability
Youmightbesurprisedtoknowthatbicycleshaveexistedforabouttwohundredyears,butnooneissurewhofirstmadethispo
Chicago’sChildren’sHospitalistheluckyreceiverofasurprise$18milliongiftfromGladysHolm.Sheoncewasasecretarywh
PASSAGEONE(1)OnJuly7th,IwastravelinginLondon.IwashavingbreakfastatahotelverynearLiverpoolStreetStation
随机试题
背景材料某工艺品公司作为卖方同外商就工艺品的价格进行谈判。谈判开始后,工艺品公司坚持600元一件,而外商坚持400元一件,双方态度强硬。谈判进行了两日毫无进展。第三天谈判继续开始,双方商定最后阶段谈判限定为2个小时,以免浪费时间。谈判进行一段时间仍是没有
关于病原菌致病性的构成因素,叙述最全面的是()
蛛网膜下腔阻滞的绝对禁忌证是
自行办理纳税申报的情形包括( )。
选择国家税收法律、法规或政策规定不予征税的经营、投资、理财等活动的方案以减轻税收负担的方法是()。
(2016·山西)社会可以制约教育的发展,而教育无法影响社会的发展。()
日本自然主义的主要作家有_______。
WhatdoesthenewssayaboutthepresidentialelectioninIndonesia?
DoesGeneticResearchThreatenOurCivilLiberties?TheCurrentGeneticResearchThescienceofgeneticsisaflourishin
MiltonFriedmanwaswrong.Inflationisalwaysandeverywhereasocialphenomenon,notamonetaryone.Atleast,thatishowRob
最新回复
(
0
)