首页
登录
职称英语
Honeybee populations declined by 13.6% over the winter, according to a surve
Honeybee populations declined by 13.6% over the winter, according to a surve
游客
2024-03-11
33
管理
问题
Honeybee populations declined by 13.6% over the winter, according to a survey of beekeepers across England. Losses were most severe in the north-east, where the survey recorded a loss rate of 17.1%.
Experts worry that the declines will affect plant productivity. There are also concerns that the declines, along with drought conditions in some area, will mean less English honey this year.
Martin Smith, president of the British Beekeepers Association, which carried out the survey, said: "If this was measured against similar losses in livestock, it would be seen as disastrous and there would be great concern on the knock-on impact of food prices."
Beekeepers are puzzled by the decline because the cold winter and early spring should have favoured bees. They stay "clustered" tightly in their hives when it is cold and dry, saving energy for spring foraging when the temperature rises about 12°C.
However, there is good news that the rate of colony loss has slowed. Four years ago, one in three hives was wiped out.
Beekeepers suspect that poor nutrition is a likely cause of weakness in adult bees that makes them succumb to diseases spread by a parasitic mite.
"The varroa mite is the number one reason why people lose bees, so the government needs to increase research to cure diseases caused by varroa," said Smith. "But a colony that has a good source of pollen and nectar will go into winter more strongly and better able to fend off disease."
The association is calling on everyone who has a garden, small, to plant bee-friendly plants this summer. "It is really important that there are flowering nectar-rich plants around in August, September and October to provide the nutrition that’s needed so the bees can top up their stores of honey in the hive to see them through winter," said Smith.
A campaign being launched next week to save all bees, spearheaded by Sam Roddick and Neal’ s Yard Remedies, pins the blame for the decline on pesticide. It will start a petition to hand to Downing Street in October to ban the use of a class of pesticides that has been implicated in bee deaths across the world.
Roddick said, "These neonicotinoid pesticides penetrate the plant and indiscriminately attack the nervous system of insects that feed off them, disorientating bees, impairing their foraging ability and weakening their immune system, causing bee Aids. On current evidence, Italy, Germany and Slovenia have banned some varieties. In the UK, it’s up to the people to show the government that if there is any doubt that they are contributing to bee deaths, we need to ban them."
A spokesman for the government’s National Bee Unit said: "The UK has a robust system for assessing risks from pesticides and all evidence shows neonicotinoids do not pose an unacceptable risk when products are used correctly, but we will not hesitate to act if presented with any new evidence." [br] Which of the following is not the reason of less honey in Britain according to scientists?
选项
A、Because the number of honeybees declines.
B、Because the beekeepers become much less.
C、Because the productivity of honey plant will decline.
D、Because of the drought conditions in some areas in Britain.
答案
B
解析
细节题。根据题目中less honey in Britain可定位至文章第二段,根据Experts worry that the declines will affect plant productivity.There are also concernsmat the declines,along with drought conditions in some area,will mean less Englishhoney this year.(专家担心蜜蜂数量的下降会影响工厂生产力,加之一些地区干旱的情况。可能会导致今年英国蜂蜜的产量减少。)可知,蜜蜂数量的下降、工厂生产力的下降和一些地区的干旱情况是专家担心蜂蜜产量下降的三大因素,而B项“蜂农明显减少”文章并未提及,不能构成蜂蜜产量下降的原因。
转载请注明原文地址:https://tihaiku.com/zcyy/3526067.html
相关试题推荐
相应correspondingly;accordingly
根据……bebasedon…;accordingto…
Honeybeepopulationsdeclinedby13.6%overthewinter,accordingtoasurve
Honeybeepopulationsdeclinedby13.6%overthewinter,accordingtoasurve
Honeybeepopulationsdeclinedby13.6%overthewinter,accordingtoasurve
[originaltext]DuringthearcticwinterfromOctobertoMarch,theaveraget
据统计accordingtostatistics/figures
[originaltext]Thewintergift-givingseasonisresponsiblefortwentyperce
[originaltext]Thewintergift-givingseasonisresponsiblefortwentyperce
[originaltext]Accordingtoofficialstatistics,Thailand’sannualroad-deat
随机试题
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Completethesummarybelow.ChooseONEWORDONLYfromthepassageforeachanswe
Ifyouhaven’talready,youwillatsomepointmakeamistakeatwork.Howy
根据我国标准的规定,凡工程建设没有满足某个规定的要求,就称之为质量不合格;而没有
D
装配式桁架拱安装过程中应采用全站仪监测,监测的内容不包括( )。 A、拱肋、
盈亏平衡点越低,说明项目()。A:适应市场变化能力越强,抗风险能力越强 B:
上述患者的有关处理不妥的是A.避免辛辣食物 B.少吃水果 C.服缓泻剂 D
对于编制城市近期建设规划应遵循的原则的叙述中,不正确的是()。A.处理好近
下列各项中,能够产生应纳税暂时性差异的有()。A.账面价值大于其计税基础的资产
最新回复
(
0
)