首页
登录
职称英语
[originaltext] Insects and diseases that attack food crops are moving as ris
[originaltext] Insects and diseases that attack food crops are moving as ris
游客
2023-08-06
67
管理
问题
Insects and diseases that attack food crops are moving as risen temperatures bring changes to the environment. Plant diseases alone destroy an estimated 10 to 16 percent of the world’s crops in the field, experts say, and plant diseases destroy another 6 to 12 percent after harvest.
A new study examines the movement of crop pests and diseases, and how it will affect agricultural production worldwide. Dan Bebber is a senior research fellow at the University of Exeter in Britain. He says research has shown that wild plants and animals are moving toward Earth’s North and South poles as the planet warms. Mr. Bebber wanted to know if the same thing was happening with organisms that attack agricultural crops. He examined reports of first sightings of new insects and diseases around the world.
The records came from CABI— the Centre for Agricultural Bioscience International. He says the group began collecting information from developing and industrialized countries years ago. Dan Bebber and his research team studied 612 different organisms— from viruses and bacteria to insects like beetles and butterflies. They found that since 1960, crop pests and diseases have been moving toward the poles at an average rate of about 3 kilometers each year. Mr. Bebber says this puts the most productive farmland in the world in danger. As new species of pests and diseases evolve and potentially the environment for them becomes more amenable at higher latitudes, the pressure on the breadbasket of the world is going to increase. Farmers face other threats. Invasive species passed through trade are also causing problems. Gene Kritsky is an entomologist at the College of Mount St. Joseph in Ohio. He specializes in the study of insects. He says climate change may improve conditions for some invasive species. It means that species in other parts of the world that might do well in warmer temperatures can now do well in the breadbasket of America. Another entomologist Christian Krupke of Purdue University says the effects of these changes will depend very much on the crop, the insect and the disease. But he says the research is a warning sign that people should care about climate change and do something about it.
Questions 23 to 25 are based on the recording you have just heard.
23. How bad are plant diseases to the crops?
24. What did Dan Bebber and his research team study?
25. What does Gene Kritsky say about climate change?
选项
A、They affect all agricultural production worldwide.
B、They impact most part of the crops in the field.
C、They destroy up to 22% of the crops before harvest.
D、They destroy about 10% to 16% of the world’s crops in the field.
答案
D
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2902094.html
相关试题推荐
[originaltext]M:YouareaprofessorofPhysicsattheUniversityofOxford;
[originaltext]M:Doyouthinkdreamshavespecialmeanings?W:No,Idon’
[originaltext]M:Doyouthinkdreamshavespecialmeanings?W:No,Idon’
[originaltext]M:YouareaprofessorofPhysicsattheUniversityofOxford;
[originaltext]M:YouareaprofessorofPhysicsattheUniversityofOxford;
[originaltext]M:YouareaprofessorofPhysicsattheUniversityofOxford;
[originaltext]M:YouareaprofessorofPhysicsattheUniversityofOxford;
[originaltext]W:I’veworkedininternationaltradeallmylife.Myfatherdid
[originaltext]W:I’veworkedininternationaltradeallmylife.Myfatherdid
[originaltext]M:Tonightwehaveaveryspecialguest.Mrs.AnnaSanchezisat
随机试题
[originaltext]Museumshavechanged.Theyarenolongerplacesforthepriv
【1】[br]【5】[originaltext]Germany’sinvasionofPolandonSeptemberIandB
UnderstandingDepressionI.Misunderstandingofdepressi
()是指国家组织管理体育的各种机构、各项制度和准则的总称。A.体育机构 B.体
结构的载荷与尺寸均已知。B处约束的全部约束力为:
营业税纳税人提供应税劳务,应当向其机构所在地或者居住地的主管税务机关申报纳税,但
外科监护病房空气消毒可选用A.层流通风 B.紫外线灯照射 C.过氧乙酸熏蒸消
太阳病的主要病机是A.寒邪袭表,郁遏卫气,损伤营阴 B.风寒袭表,营卫不和,正
某农业企业发行总额为500万元的5年期债券,票面利率为10%,发行费用率为5%。
下列选项中,( )是客流存在和发展的前提,并决定了客流的发展水平。A.人口及分布
最新回复
(
0
)