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
A、It will put the productive farmland in danger. B、It may improve conditions for some invasive species. C、It is a warning sign f
A、It will put the productive farmland in danger. B、It may improve conditions for some invasive species. C、It is a warning sign f
admin
2021-08-20
34
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、It will put the productive farmland in danger.
B、It may improve conditions for some invasive species.
C、It is a warning sign for people to do something.
D、It may push crop pests moving toward the poles.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/fwD7777K
0
大学英语六级
相关试题推荐
A、Makingacompromise.B、Warningofthedangers.C、Callingthepoliceforhelp.D、Turningdownthemusic.ABettyWong列举了多个解决邻居家噪
A、Stayawayfrompartiesandcampussocialevents.B、Sticktogetheralwaysifgoingtothesocialevents.C、Checkoneachother
A、Personalinstincts.B、Behavioralchanges.C、Conversationvideos.D、Psychologicalresearches.BBrinke博士的调查指出,运用一些客观、有理有据的生理和行为变
A、Itprovidesstudentschancestoparticipateinacademicresearch.B、Itencouragesprofessorstohirefull-timeresearchassist
RelationshipTalkingPoints:SpeakYourSpouse’sLanguageA)AnnaandMikePetersonrecentlyhaddinnerattheirfavouritesteakh
TryingtooHardCanSlowNewLanguageDevelopmentA)Neuroscientistshavelongobservedthatlearningalanguagepresentsadiffe
TryingtooHardCanSlowNewLanguageDevelopmentA)Neuroscientistshavelongobservedthatlearningalanguagepresentsadiffe
Forthispart,youareallowed30minutestowriteanessayonuniversityranking.Youressayshouldincludethedifferentviews
A、Learningaforeignlanguage.B、Doingcomparativeliterature.C、Writingpapers.D、Meetingwithprofessors.B
Forthispart,youareallowed30minutestowriteashortessayentitledProblemsofInfringementthroughtheInternetYoushou
随机试题
加工风鸡的最佳时间是________。
以下有关提前竣工的说法正确的有()
海关依法收取的担保资金包括()。
在商用房贷款发放过程中,对于借款人未到银行直接办理开户放款手续的,()部门应及时将有关凭证邮寄给借款人或通知借款人来银行取回。
记cos(一80°)=k,那么tan100°=()
李军在某服装店挑选衣服,店主向其推荐了一款风衣。李军试穿后觉得不合适,脱下风衣后准备离开,店主却强迫李军买下了这件风衣。店主的这一行为侵犯了李军的()。
2019年3月5日,李克强总理在作政府工作报告时强调,2019年国有大型商业银行____,贷款要增长30%以上。
俗话说“不要将你的鸡蛋全都放在一只篮子里”。下列选项与该俗语蕴含的道理相吻合的是:
概要叙述你参与实施的电子商务系统项目以及你所担任的主要工作。阐述该项目实施或运行过程所发现的主要问题及其解决方法,并说明效果。
Thereisperhapsnoothereventinthenaturalworldthatisascharacteristicofaseasonasafullchorusofspringpeepers.I
最新回复
(
0
)