首页
登录
职称英语
Saving the juniper plant BackgroundJuniper was one of the first plants to colon
Saving the juniper plant BackgroundJuniper was one of the first plants to colon
游客
2025-02-10
43
管理
问题
Saving the juniper plant Background
Juniper was one of the first plants to colonise Britain after the last【31】________
Its smoke is virtually【32】________, so juniper wood was used as fuel in illegal activities.
Oils from the plant were used to prevent【33】________ spreading.
Nowadays, its berries are widely used to【34】________ food and drink.
Ecology
Juniper plants also【35】________several species of insects and fungus.
Problems
In current juniper populations, ratios of the【36】________are poor.
Many of the bushes in each group are of the same age, so【37】________of whole
populations is rapid.
Solutions
Plantlife is trialling novel techniques across【38】________areas of England.
One measure is to introduce【39】________ for seedlings.
A further step is to plant【40】________from healthy bushes. [br] 【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...
1eading 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://tihaiku.com/zcyy/3950496.html
相关试题推荐
SavingthejuniperplantBackgroundJuniperwasoneofthefirstplantstocolon
SavingthejuniperplantBackgroundJuniperwasoneofthefirstplantstocolon
SavingthejuniperplantBackgroundJuniperwasoneofthefirstplantstocolon
SavingthejuniperplantBackgroundJuniperwasoneofthefirstplantstocolon
Scientistshavetraditionally(classified)plantsby(groupingthem)accordingt
(Dueto)persistentinbreeding,self-pollinatingplants(have)geneticallymore
(Morethan)800majoroil(companv)(have)plantsandofficesinTulsa,Oklahoma
Lichens.probablythehardiestofallplants,livewherevirtuallynoth
[originaltext]Today,wearegoingtotalkaboutaspecialwaysomeplantsr
[originaltext]Today,wearegoingtotalkaboutaspecialwaysomeplantsr
随机试题
n=l×19³ColumnAColumnBThenumberofdistinct
Weliveinasocietywherethereisalotoftalkaboutscience,butIwouldsay
[originaltext]M:Hello!Youseemworried.CanIhelpyou?W:Oh,Ifeelsostr
尼泊金酯是国家允许使用的食品防腐剂,它是对羟基苯甲酸与醇形成的酯类化合物。尼泊金
一家公司的比较资产负债表上,在2005年12月31日,净收入为150000美元,
世界文化景观遗产主要由人类创意设计和建造的建筑及其环境景观构成,代表着“自然与人
太阳伤寒证不可能出现的症状是A.恶寒发热 B.有汗脉缓 C.项强痛 D.无
公司信贷业务的交易对象为()。A.自然人 B.银行的合作单位 C.信贷产品
根据烟叶税的有关规定,下列说法正确的是()。A.收购烟叶的单位和个人为烟叶
(2015年真题)关于安全生产事故应急预案的说法,正确的有( )。A.应急预案编
最新回复
(
0
)