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
37
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.
【L37】
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
extinction
解析
录音原文的at similar times“在相近的时代”和swift“快速的”分别是题目中的same age和rapid的同义替换。
转载请注明原文地址:https://kaotiyun.com/show/8mnD777K
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
Everywhereintheworld,plantsandanimalslivetogether.Someanimalseatplantstheylivewith.Someplantsstayalivebecaus
WhatdidthestudyinBritainfindout?
MidburyDramaClubBackgroundClubstagedin1957Prizerecentlywonby【L1】________sectionUsuallyperforms【L2】_____
MidburyDramaClubBackgroundClubstagedin1957Prizerecentlywonby【L1】________sectionUsuallyperforms【L2】_____
MidburyDramaClubBackgroundClubstagedin1957Prizerecentlywonby【L1】________sectionUsuallyperforms【L2】_____
MidburyDramaClubBackgroundClubstagedin1957Prizerecentlywonby【L1】________sectionUsuallyperforms【L2】_____
CreatingartificialgillsBackgroundTakinginoxygen;mammals—lungs;fish—gillsLong-helddreams—humansswimm
CreatingartificialgillsBackgroundTakinginoxygen;mammals—lungs;fish—gillsLong-helddreams—humansswimm
随机试题
余某,现年35岁,2015年药学专业大学本科毕业,到甲省丙市人民医院药剂科工作。2018年经国家执业药师职业资格考试取得执业药师资格。2018年,碍于情面利用自己的证件替亲戚李某办理《药品经营许可证》《执业药师注册证》,并担任药店负责人,但不参与实际经营。
Manythousandshavebenefited______thenewmedicalsystem.
慢性肺心病患者,近一周来病情加重,痰稠不易咳出,嗜睡,神志恍惚,发绀,双肺可闻湿性哕音。血常规:WBC13.5×109/L,N85%,尿蛋白(+),显微镜下,WBC数0~3个/HP,大便隐血试验(±)。治疗中,下列哪项不正确
下列对沙门菌的叙述,正确的是
A.家庭性反应B.撤药反应C.过敏反应D.给药反应E.基因毒性反应H类反应即()
一般资料:求助者,男性,56岁,中学文化,民营企业家。案例介绍:十几年前的一天,求助者和公司里的几个人打了一个通宵的扑克牌。第二天觉得骶尾部疼痛很厉害,当时贴了些膏药。此后总觉得骶尾部疼痛,多次到医院检查治疗,钱花了几十万,但似乎没有明显效果。求
2016年是中国共产党成立95周年。在中共早期领导人中,有一位无锡籍人士,他是()
三江源自然保护区是我国新建的最大的自然保护区。其所指的三江源是下列哪三条江河的源头?()
(2007下项管)商业智能(BI)的核心技术是逐渐成熟的数据仓库(DW)和______。
BeforeMartinL.King.alltheblackleaderschoseviolencetowintheirfreedomandequality.JohnKennedythoughthighlyof_
最新回复
(
0
)