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
47
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.
【L33】
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
infection(s) (from)
解析
录音原文的the spread of infection“感染扩散”是infections spreading的同义替换。
转载请注明原文地址:https://kaotiyun.com/show/wmnD777K
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
下列给定程序中,函数fun的功能是:将s所指字符串中的所有数字字符移到所有非数字字符之后,并保持数字字符串和非数字字符串原有的次序。例如,s所指的字符串为“def35adh3kjsdf7”,执行后结果为“defadhajsdf3537”。请在程序的下划
给定程序中,函数fun的功能是:计算出形参s所指字符串中包含的单词个数,作为函数值返回。为便于统计,规定各单词之间用空格隔开。例如,形参s所指的字符串为:ThisisaClanguageprogram,函数的返回值为6。请在程序
有以下定义和语句:structstudents{intnum;charname[20];charc;struct{intgradel;intgrade2;}s;};structstudents
下列给定程序的功能是:读入一个英文文本行,将其中每个单词的第一个字母改成大写,然后输出此文本行(这里”单词”是指由空格隔开的字符串)。例如,若输入”Iamastudenttotaketheexamination”,则应输出”IAmASt
考生文件夹下有一个数据库文件“samp2.accdb”,其中存在已经设计好的表对象“tCollect”“tpress”和“tType”,请按以下要求完成设计:创建一个查询,查找收藏品中CD盘最高价格和最低价格信息并输出,标题显示为“v_Max”和“
Severaldaysago,Icameacrossastrangerinthestreetwhostoppedandaskedmedirections.I【C1】________toshowhimthewayt
ItwasClark’sfirstvisittoEngland,andhewaslookingforwardtohisfirstjourneyonLondon’sUndergroundRailway.Against【
ItwasClark’sfirstvisittoEngland,andhewaslookingforwardtohisfirstjourneyonLondon’sUndergroundRailway.Against【
Travellingcanbeawonderfuladventure.Travellingbyairplane,however,canbeverytiring.Thefollowing【K1】________(be)s
Accordingtotheman,whathappenedtohismechanicatGeorge’sGarage?
随机试题
A.胰蛋白酶B.糜蛋白酶C.胰淀粉酶D.羧基肽酶激活糜蛋白酶原的是
A.捕获法ELISAB.间接ELISAC.双抗体夹心ELISAD.竞争法ELISAE.一步法ELISA用于IgM类抗体的测定方法为
蜂蜜的作用不包括哪项
在自动银行对账中,必选的银行对账条件包括()。
债务人甲下落不明,但未被宣告失踪。债权人乙起诉要求清偿债务,人民法院在公告传唤后甲仍未出现。根据民事诉讼法律制度的规定,人民法院的正确处理是()。(2012年)
限制民事行为能力人订立的合同,经法定代理人追认后,该合同有效。相对人可以催告法定代理人在三个月内予以追认。()
金融市场最基本的功能是()。
蛙肉含有丰富的蛋白质,高热量,低脂肪,几乎不含碳水化合物,尤其对肠胃不适、节食和偏食者是理想的营养食品。蛙肉主要为食用,味道鲜美。蛙皮可制作服装、手袋、鞋及各种精美饰品。在意大利、比利时、卢森堡和法国掀起了一股吃蛙肉热,亚洲人更将蛙肉视为美味佳肴
Inthe1950s,thepioneersofartificialintelligence(AI)predictedthat,bytheendofthiscentury,computerswouldbeconvers
Whatdoesthetourguidetellhertourgroupabouteachofthefollowingplacesontheday’sitinerary?Writethecorrectlette
最新回复
(
0
)