首页
登录
职称英语
The level of lead contamination in United States rivers declined between 1975 an
The level of lead contamination in United States rivers declined between 1975 an
游客
2024-01-13
24
管理
问题
The level of lead contamination in United States rivers declined between 1975 and 19Federal regulations requiring a drop in industrial discharges of lead went into effect in 1975, but the major cause of the decline was a 75 percent drop in the use of leaded gasoline between 1975 and 19Which of the following, if true, best supports the claim that the major cause of the decline in the level of lead contamination in United States rives was the decline in the use of leaded gasoline?
选项
A、The level of lead contamination in United States rivers fell sharply in both 1975 and 1983.
B、Most of the decline in industrial discharges of lead occurred before 1976, but the largest decline in the level of river contamination occurred between 1980 and 1985.
C、Levels of lead contamination in rivers fell sharply in 1975 - 1976 and rose very slightly over the next nine years.
D、Levels of lead contamination rose in those rivers where there was reduced river flow due to drought.
E、Although the use of leaded gasoline declined 75 percent between 1975 and 1985, 80 percent of the decline took place in 1985.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3358939.html
相关试题推荐
The____goalofthebookistohelpbridgethegapbetweenresearchandteachin
WhentheUnitedStatesCongresscreatedYellowstoneNationalParkin1872,t
WhentheUnitedStatesCongresscreatedYellowstoneNationalParkin1872,t
WhentheUnitedStatesCongresscreatedYellowstoneNationalParkin1872,t
WhentheUnitedStatesCongresscreatedYellowstoneNationalParkin1872,t
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusuall
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusuall
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusuall
OneofthepoliticalissuesthatisheardalotaboutintheStateslatelyis
OneofthepoliticalissuesthatisheardalotaboutintheStateslatelyis
随机试题
Stressmaybedefinedasanemotional,intellectual,orphysicalreactionto
Completethesentencesbelow.WriteONEWORDONLYforeachanswer.Footballint
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Lastweek,speakersataprograminWashingtondiscussedusingnanotechnolog
当不存在品质价差和地区价差的情况下,期货价格高于现货价格,这时()。A、市场为反向市场,基差为负值B、市场为反向市场,基差为正值C、市场为正向市场
A.4~5天 B.6~7天 C.7~9天 D.14天减张缝合拆线应在术后(
附子的归经为A.心、肝、脾 B.心、脾、肾 C.心、肝、肾 D.心、脾、肺
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
以下选项中,属于组织策略的是()。 A.画线B.记笔记 C.列提纲D.
患者女,24岁。因左上智牙颊向高位阻生,要求拔除。拔除该牙应麻醉的神经是 A.
最新回复
(
0
)