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
DDT, the most powerful pesticide the world had ever known, exposed nature’s vulnerability. Unlike most pesticides, which effecti
DDT, the most powerful pesticide the world had ever known, exposed nature’s vulnerability. Unlike most pesticides, which effecti
admin
2020-06-21
75
问题
DDT, the most powerful pesticide the world had ever known, exposed
nature’s vulnerability. Unlike most pesticides, which effectiveness is limited 【M1】______
to destroy one or two types of insects, DDT was capable of killing hun- 【M2】______
dreds of different kinds at once. Developed in 1939, it first distinguished
itself during World War II, cleaning South Pacific islands of malaria- 【M3】______
caused insects for U.S. troops, while in Europe being used as an effective 【M4】______
de-lousing powder. Its inventor was awarded by the Nobel Prize. 【M5】______
When DDT became available for civilian use in 1945, there were only
a few people who expressed the second thoughts about this new miracle 【M6】______
compound. One was nature writer Edwin Way Teale, who warned, ""A spray
as discriminate as DDT can upset the economy of nature as much as a revo- 【M7】______
lution upsets social economy. Ninety percent of all insects are good, but if 【M8】______
they are killed, things go out of kilter right away."" Another was Rachel Car
son, who wrote to the Reader’s Digest to propose an article about series of 【M9】______
tests on DDT being conducted not far from which she lived in Maryland. 【M10】______
The magazine rejected the idea.
【M4】
选项
答案
caused — causing
解析
动词的-ed分词和-ing分词作名词修饰语时,-ed分词表示的是动词和所修饰名词间的被动关系,而-ing形式表示的则是主动关系,此句中malaria-causing insects相当于in-sects that caused malaria,因此是主动关系,所以应选择一ing形式。详细说明请参照本书第37页关于动词的-ed分词和-ing分词区别的解释。
转载请注明原文地址:https://www.kaotiyun.com/show/sZbK777K
0
专业英语八级
相关试题推荐
A、Itistocomparethedifferentfacilitiesthathotelchainsprovide.B、Itistocomparesomehotelchainsindifferentaspects
A、Shelostbothofherparents.B、Shewasill-treatedbyherstepmother.C、Shewasonthevergeofcollapseasamotherlesschil
StoryTellingI.StatusofstorytellingA.Inthepastprovidedcultural【T1】______【T1】______providedmoraleducation
StoryTellingI.StatusofstorytellingA.Inthepastprovidedcultural【T1】______【T1】______providedmoraleducation
StoryTellingI.StatusofstorytellingA.Inthepastprovidedcultural【T1】______【T1】______providedmoraleducation
StoryTellingI.StatusofstorytellingA.Inthepastprovidedcultural【T1】______【T1】______providedmoraleducation
StoryTellingI.StatusofstorytellingA.Inthepastprovidedcultural【T1】______【T1】______providedmoraleducation
A、Seeinginterestingbuildingsinthecity.B、Beingabletoenjoytheworldofnature.C、Drivinginunsettledweather.D、Taking
EffectiveNote-takingThedifficultyoftakingnotes:Note-takingrequiresahighlevelofabilityduetothe【T1】______ofspoke
EffectiveNote-takingThedifficultyoftakingnotes:Note-takingrequiresahighlevelofabilityduetothe【T1】______ofspoke
随机试题
A.慢性牙龈炎B.龈增生C.急性坏死性溃疡性牙龈炎D.浆细胞性牙龈炎E.苔藓型剥脱性龈炎上皮萎缩,棘层变薄,基底细胞水肿、液化,可观察到胶样小体,固有层可见密集的淋巴细胞浸润
我国急性胰腺炎最常见的病因是
关于手术室的清洁与消毒正确的是
患儿,5个月,体重7.5kg,羊奶喂养,未加辅食。近来家长发现其面色苍黄,表情呆滞,不哭,不笑,少动,患儿可能是
石灰稳定土宜在春末和气温较高的季节施工,养护温度低于()时强度几乎不增长。
根据我国《招标投标法》,招标可分为()
下列各项财政支出中,体现政府非市场性分配活动的支出是()。
社会主义制度下个人消费品分配为什么必须依照按劳分配原则?
期权交易的两个基本要素是()。
2013年,中国制造业PMI全年均值是:
最新回复
(
0
)