首页
登录
职称英语
DDT, the most powerful pesticide the world had ever known, exposednature’s
DDT, the most powerful pesticide the world had ever known, exposednature’s
游客
2023-11-26
31
管理
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. [br] 【M8】
选项
答案
but — and
解析
这里如果使用but,句子的连接就不很顺畅。实际上本句的两个意群的关系应该是顺接,而不是转折,因此应选用表顺接的连词,如and和so等。
转载请注明原文地址:https://tihaiku.com/zcyy/3220183.html
相关试题推荐
LanguageandHumanityLanguageispowerfulanditcanhe
LanguageandHumanityLanguageispowerfulanditcanhe
LanguageandHumanityLanguageispowerfulanditcanhe
LanguageandHumanityLanguageispowerfulanditcanhe
LanguageandHumanityLanguageispowerfulanditcanhe
LanguageandHumanityLanguageispowerfulanditcanhe
LanguageandHumanityLanguageispowerfulanditcanhe
LanguageandHumanityLanguageispowerfulanditcanhe
LanguageandHumanityLanguageispowerfulanditcanhe
LanguageandHumanityLanguageispowerfulanditcanhe
随机试题
Booking.comB.V.,partofthePricelineGroup,ownsandoperatesBooking.
Everythinghasitsgoodandbadpoints.Fame,too,hasitsadvantagesanddis
Ourschoolsinginggroupisgoingtogive______performancenextmonth;don’tm
DoctorGreenwentonwithhisexperimentonhumanbeing______thedebategoingo
Washington’sNationalParkFundwasfoundedin1993byagroupofenthusiast
刘某,男,45岁,身高175cm,体重95Kg。从事行政管理20年,睡眠不足,餐
某些食品包装袋内有一小包物质用,来吸收氧气和水分,以防止食品腐败,常称“双吸剂”
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
男性,48岁,近1周内发现血压升高156/98mmHg,服用利尿剂氢氯噻嗪降压效
肌糖原不能分解为葡萄糖直接补充血糖是因为肌肉中无 A.糖原磷酸化酶B.脱支酶
最新回复
(
0
)