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
45
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://kaotiyun.com/show/sZbK777K
0
专业英语八级
相关试题推荐
A、Theyprovideprivateworkoutrooms.B、Theyarefreeofcharge.C、Theyprovidevariousworkoutequipment.D、Theymeetbusiness
A、Theycanbeeasilygatheredbyillegalsoftware.B、TheyareprovidedbyYahooorHotmail.C、Theyarenotworthyofsigningup.
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
EffectiveNote-takingThedifficultyoftakingnotes:Note-takingrequiresahighlevelofabilityduetothe【T1】______ofspoke
A、Thenatureofwork.B、Officedecoration.C、Officelocation.D、Workprocedures.B面试官问MissGreen:“从就业部到广告公司,你的工作一定有所改变,不是吗?”Miss
随机试题
非经国务院计量行政部门批准,任何单位和个人不得拆卸、改装计量基准,或者自行中断其计量检定工作。()
一新购肉牛,采食过程中被惊吓,突然躁动不安,伸颈,空嚼吞咽,大量流涎,咳嗽,呼吸困难。该病可能为()。
既能止咳平喘,又能润肠通便的药对是
水痘患者作为唯一的传染源,其具有传染性的时段为
缺铁性贫血时,外周血涂片的特点是
下列关于旅行社聘用导游的做法中,正确的是()。
A.negativeB.interactC.gainD.self-respectPhrases:A.achildislikelytodevelopa【T13】_____________outlook
数据库管理系统常见的数据模型有层次模型、网状模型和【】3种。
A、 B、 C、 B
Ataroundageoffive,everychildhastomakethe【C1】______fromhometoschool.Childrenatthisagehaveanenormousamountto
最新回复
(
0
)