首页
登录
职称英语
[originaltext] Scientists have observed that plants themselves produce many
[originaltext] Scientists have observed that plants themselves produce many
游客
2023-07-16
65
管理
问题
Scientists have observed that plants themselves produce many poisonous chemicals for defense against insects. But insects have developed ways of dealing with them and,in fact,have been eating plants for about 250 million years.Now insects are using these same mechanisms to deal with man-made poisons-insecticide.This is why resistance of insects to insecticide has developed so rapidly.What should be done?Scientists studyilg the problem suggest that farmers use less insecticide.At the moment,famlers regularly spray crops as a precaution against problems that are caused by large numbers of pests.They should,instead,spray only where pests have actually been seen.Secondly,farmers could use a combination of two or three jnsecticide at once.To survive,the insects would need to become resistant to two or more poisons at the same time.The most surprising suggestion,perhaps,perhaps,is that,at certain times of the year,famers should actually try to attract new insects onto the crops they are trying to protect.The new insects will mate with those which survived from a certain kind of insecticide and will lessen the latter’s resistance to it.
Scientists hope that these and other measures will postpone the day when farmers and scientists will have to stand by while new super bugs which may be resistant to all our poisons invade our farms and devour our crops.
选项
A、Changing the way of spraying crops.
B、Buying some outdoor insect lamps.
C、Using a combination of three insecticide.
D、Trying to attract new insects onto the crops.
答案
D
解析
短文提到,应对害虫耐药性最不寻常的建议是,在一年的某些时候尝试吸引别的昆虫来田间,D正确。
转载请注明原文地址:https://tihaiku.com/zcyy/2842849.html
相关试题推荐
[originaltext]DeepSpringsisanAmericancollege.Itisanunusualcollege
[originaltext]DeepSpringsisanAmericancollege.Itisanunusualcollege
[originaltext]DeepSpringsisanAmericancollege.Itisanunusualcollege
[originaltext]Onewinterdayin1891aclassatatrainingschoolinMassac
[originaltext]Onewinterdayin1891aclassatatrainingschoolinMassac
[originaltext]A"typical"Britishfamilyusedtoconsistofmother,father
[originaltext]M:Thenewmayorisreallyagoodpublicspeaker.Thespeechhed
[originaltext]M:Thenewmayorisreallyagoodpublicspeaker.Thespeechhed
[originaltext]M:Thenewmayorisreallyagoodpublicspeaker.Thespeechhed
[originaltext]M:Thenewmayorisreallyagoodpublicspeaker.Thespeechhed
随机试题
Becauseseatinginthetrainingsessionsis______limited,employeesareadvised
Astheautomobileindustryshedsjobs,itcomesasgoodnewsthatoverthela
Dalianurgentlyneedstoestablisha【B1】______oftalentedpeopletomeetthe
__________don’taskthemathsteacheraboutthehomework.Ithinkshe’sdefinitel
IPv6地址长度为()比特。A.32 B.48 C.64 D.128
桩基工程中,相应定额内未包括的项目或费用为()。A.桩基施工前的场地平整
房地产经纪人欲将潜在客户变成现实客户,首先应了解客户的()。(2010年真题
某化工企业的立式甲醇储罐采用液上喷射低倍数泡沫灭火系统,某消防设施检测机构对该系
男,23岁,右腹股沟可复性包块2年,查体:肿块还纳后,压迫内环口不复出,无压痛,
推进乡村治理体系与治理能力现代化的重要意义包括()A.推进乡村治理体系与治理能力
最新回复
(
0
)