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
Agricultural pests are winning the battle against the poisonous chemicals in pesticides. As each new chemical pesticide is used,
Agricultural pests are winning the battle against the poisonous chemicals in pesticides. As each new chemical pesticide is used,
admin
2011-02-28
30
问题
Agricultural pests are winning the battle against the poisonous chemicals in pesticides. As each new chemical pesticide is used, the insects or rodents gradually become used to it. The pests change themselves so that they are not killed by the poison. Therefore, farmers, scientists, and food planners are trying a new method to control the pests that attack their crops, This method is called Integrated Pest Management or IPM.
Integrated Pest Management is a plan that combines several different methods to destroy insects and rodents. These methods are specifically developed for individual areas and crops. The control methods include using the pests’ natural enemies, controlling the pests’ breeding environment, and developing stronger varieties of seeds. Chemical poisons are used only when necessary. The IPM method accepts the fact that it is useless to try to destroy pests completely with chemical poisons. Its aim is to control pest populations so that crops can still grow well.
Cotton farmers in Texas have been using the IPM method; The farmers find the best combination of control methods for their needs. In this way, they can produce crops without using too many chemical poisons. In 1977, three quarters of Texas cotton fields received no insecticides at all. That year’s cotton crop was better than average. The IPM methods showed the farmers a better way to control the pests in their fields.
The United Nations Environment Program(UNEP)has been studying agricultural pests and chemicals. It has found that 223 pests are resistant to, or not affected by, insecticides. Rodents, including rats, are also gaining resistance to poisons. In 1965, another UN organization, the UN Food and Agricutural Organization, listed 182 resistant types of pests. Three years later, there were 228 species on the resistant list. The 1977 survey raised the number to 364 species. Because so many pests are becoming resistant to chemical poisons, it is necessary to find another method of control. By using Integrated Pest Management, farmers can still control and limit pests without depending on chemical poisons.
Agricultural pests are______.
选项
A、rapidly being destroyed by chemical poisons
B、killed by pesticides
C、dangerous to farmers, scientists, and food planners
D、bec0ming used to poisons
答案
D
解析
文章第一段第一句就指出“农作物在抵抗杀虫剂中有毒的化学药品方面打了场胜仗”,接着又解释说,它们对每种新的化学杀虫剂都逐渐产生了适应性。所以答案[D]很明显符合题意。至于[A]、[B]、[C] 要么与事实不符,要么在文章没有提到。
转载请注明原文地址:https://kaotiyun.com/show/D8td777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
PaulJohnson’sAHistoryOfTheAmericanPeopleiswhatwehavecometoexpectfromthisproductivewriter—clear,colorfulnarra
PaulJohnson’sAHistoryOfTheAmericanPeopleiswhatwehavecometoexpectfromthisproductivewriter—clear,colorfulnarra
It’salmostanarticleoffaith:yourbestallyinthefightagainstcancerisadoggedlyoptimisticoutlook.Anditwouldseem
Studythefollowingpicturecarefullyandwriteanessayonit.Inyouressay,youshould(1)describethepicturebriefly,(2)
PaulJohnson’sAHistoryOfTheAmericanPeopleiswhatwehavecometoexpectfromthisproductivewriter—clear,colorfulnarra
PaulJohnson’sAHistoryOfTheAmericanPeopleiswhatwehavecometoexpectfromthisproductivewriter—clear,colorfulnarra
Somedoctorsaretakinganunusualnewapproachtocommunicatebetterwithpatients—theyareletting【C1】______readthenotestha
Somedoctorsaretakinganunusualnewapproachtocommunicatebetterwithpatients—theyareletting【C1】______readthenotestha
Manyyearsagowhenthesummersseemedlongerandlifewaslesscomplicated,wehadrentedacottage【C1】______ariverinthehea
Theautomobilehasmanyadvantages.Aboveall,itofferspeoplefreedomtogowhereverandwhenevertheywanttogo.Thebasicp
随机试题
下列导致胎儿窘迫的因素中错误的是
下列疾病的摄影位置选择,不妥的是
下列现象属于物理爆炸的是()。
关于证券公司进行期货交易的中间介绍业务,下列情形,不是证券公司必须告知客户的事项的是()。
材料(大意):材料一:2012年4月3日下午,在台州做生意的王先生的妻子小蔡在台州第一人民医院生产时出现大出血,尽管医院采取了相关措施,并紧急为其输血,但一直未见好转。由于需要大量A型血小板及血浆,但血站血源十分紧张,无奈之下,王先生想到了微博:
人事工作主要是做人的工作,人事干部应当具有良好的形象。你作为一名剖处长,对树立人事干部的良好形象有何认识和建议?
古希腊有人提出过一个诡辩式的论断:1粒谷子落地时没有响声,2粒谷子落地时也没有响声,3粒谷子落地时还是没有响声。以此类推,1整袋谷子落地时也不会有响声。这个错误的论断说明
设,则A与B()
ApaperintheLancet,shamelesslytimedtocoincidewiththeOlympicgames,comparescountries’ratesofphysicalactivity.The
【11】【13】
最新回复
(
0
)