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
Bracken, a poisonous weed, is spreading and damaging much pastureland in the Northern Hemisphere. One potentially inexpensive an
Bracken, a poisonous weed, is spreading and damaging much pastureland in the Northern Hemisphere. One potentially inexpensive an
admin
2014-10-21
101
问题
Bracken, a poisonous weed, is spreading and damaging much pastureland in the Northern Hemisphere. One potentially inexpensive and self-sustaining countermeasure is to introduce natural enemies of the plant; therefore, some scientists have proposed to control bracken by a release of bracken-eating moths native to the Southern Hemisphere into bracken-infested areas in the Northern Hemisphere. If the scientists’ proposal for controlling bracken is adopted, which of the following is a necessary condition for its success?
选项
A、That bracken in the Northern Hemisphere grows in approximately the same climates and soil conditions in which it grows in the Southern Hemisphere.
B、That the released moths will feed on weeds other than bracken that are native to the Northern Hemisphere.
C、That the livestock that will return to pastures now lost to bracken will develop immunities to the diseases caused by bracken.
D、That the released moths will survive in sufficient numbers to build a population large enough to reduce bracken and retard its growth.
E、That traditional methods of control, such as burning, cutting, and chemical spraying, will not become less expensive or labor-intensive than they are now.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/6itO777K
本试题收录于:
GMAT VERBAL题库GMAT分类
0
GMAT VERBAL
GMAT
相关试题推荐
Itissohot.Youshouldputthefoodintotherefrigeratornow.Otherwise,itwill______soon.
Packagingisaveryimportantformofadvertising.Apackagecansometimesmotivatepeopletobuyproducts.Forexample,alittl
Insomecities,workaholism(废寝忘食工作)issocommonthatpeopledon’tconsideritunusual.Theyacceptthelifestyleas【C1】______Gov
Thedoctoradvisedherthatshe______enoughrestbeforegoingbacktowork.
W:Mywatchisnotworking.________M:It’stenpasttwenty.
Traditionally,universitieshavecarriedouttwomainactivities:researchandteaching.Manyexpertswouldarguethatboththes
Ifyouassociatewithsuchpeople.I’mafraidyou______serioustrouble.
Dina:Youlookrun-down,Brian.Brian:Yeah.I’vebeenfeelingundertheweatherrecently.【D8】______andIstillhaven’tgotten
—Youdon’tlikethisoilpainting,doyou?—______.Ilikeitbetter______Ilookatit.
Thankstothemeansofmoderntransportationandcommunication,theworldisgettingsmaller.Thewholeworldcommunityappears
随机试题
女性,28岁。日晒后暴露皮肤出现皮疹,对称性关节痛,查血小板下降,尿蛋白阳性,血ANA(+),最可能的诊断是
反映一个国家的纵向权力结构和权力分配关系的是()
髓部有异常维管束的药材是
墙体应满足的基本要求主要有()。[2009年考试真题]
优先股的优先权主要表现在()。
商业银行应在每一会计年度终了编制本年个人理财业务报告,年度报告和相关报表,应于下一年度的()报中国银监会。
下面是一篇请示的正文部分,阅读后回答问题。二OO七年二月二十五日,××市委、市政府《关于加快发展旅游业的决定》(××字[××××]七号)明确指出:“同意建立旅游建设发展专项资金,其部分资金来源于交通建没附加费的分配。并将此分配比例从原来的5%调高
TwomonthsagoyougotajobasaneditorforthemagazineDesign&Fashion.Butnowyoufindthattheworkisnotwhatyouexpe
DoesTomknowanyotherforeignlanguages______English?
Fromtheverybeginning,thegirl’sfamilyobjectedstronglytoherdatingthisguy.Thoughthegirllovedtheguy【C1】______,sh
最新回复
(
0
)