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
The problem of acid rain originated with the Industrial Revolution, and it has been growing ever since. The more accurate scie
The problem of acid rain originated with the Industrial Revolution, and it has been growing ever since. The more accurate scie
admin
2015-03-08
35
问题
The problem of acid rain originated with the Industrial
Revolution, and it has been growing ever since. The more
accurate scientific term of " acid rain" would be " acid
deposition". The dry form of such deposition is just damaging【M1】______
to the environment as the liquid form. The severity of its effects
has long been recognized in local settings, exemplified by the【M2】______
spells of acid smog in heavy industrialized areas. The widespread【M3】______
destructiveness of acid rain, moreover, has become evident only【M4】______
in recent decades. One large area has been studied extensively【M5】______
is northern Europe, where acid rain has eroded structures, injured
crops and forests, and threatened life in freshwater lakes. In 1984,
for example, environmental reports indicated that almost half of
the trees in Germany’s Black Forest has been damaged by acid【M6】______
rain. The northeastern United States and eastern Canada have
also been particularly effected by this form of pollution; damage【M7】______
has also been detected in other areas of these countries and
other regions of the world.
Industrial emissions have been blamed as the major cause
of acid rain. Because the chemical reactions involved in the
production of acid rain in atmosphere are complex and as yet【M8】______
little understood, industries have tended to challenge such
assessments and to stress the need of further studies; and【M9】______
because of the cost of pollution reduction, governments have
tended to support this attitude.
Studies released by the US government in the early 1980,【M10】______
however, strongly indicated industries as the main source of
acid rain, in the eastern US and Canada.
【M6】
选项
答案
has→had
解析
语法错误。此句中主句的谓语indicated是过去式,根据时态一致原则,从句中应当使用过去完成时或一般过去时,又因为从句的动作发生在主句动作之前,所以此处应为过去完成时。
转载请注明原文地址:https://jikaoti.com/ti/T8YYFFFM
0
专业英语八级
相关试题推荐
Theavailabilityoffoodandprobably,tolesserextent,thedegreeof【M1】______dangerfrompredatorsaretwobasicinfluences
Theavailabilityoffoodandprobably,tolesserextent,thedegreeof【M1】______dangerfrompredatorsaretwobasicinfluences
Theearliestcontroversiesabouttherelationshipbetweenphotographyandartcenteredonwhetherphotograph’sfidelitytoappea
Toseehowbigcarrierscouldcontroltheonlineworld,youmustunderstanditsstructures.EarthlinkgivesJenniferaccess
Foraclearerpictureofwhatthestudentknows,mostofteachersuse【M1】______anotherkindofexaminationinadditionto
AccordingtoDr.Adams,whatshouldwehaveasanattainablegoaloflanguagelearning?
IthaslongbeenrecognizedbothhomeandabroadthattraditionalChinesearts,suchascalligraphy,painting,opera,andlitera
Intheearly1450sculturalchangeinEuropefueledagrowingneedfortherapidandcheapproductionofwrittendocuments.Be
随机试题
辛弃疾的词在结构上起伏宛转,体现了其“沉郁顿挫”的风格,故人称辛弃疾为“词中老杜”。()
初起恶寒高热流清涕,继则咽痛发热口渴苔黄,此属肠痈腹痛而手术,现乏力食少,面色少华,此属
患者,男性,24岁,因畏寒、发热、食欲缺乏、恶心、呕吐、乏力就诊。以甲型病毒性肝炎收入院治疗。对该患者宜采用的隔离方法是
医生在手术前要求病人家属签字同意的行为属于()。
某公安局为解决警力不足问题,经上级公务员主管部门批准,拟向社会公开聘任一批人员,以下岗位人员不可以聘任的是()。
下列美术作品与创作者对应不正确的一项是()。
IntheUnitedStates,thefirstday-nurserywasopenedin1854.@Nurserieswereestablishedinvariousareasduringthe(1)_____
某项目建设方没有聘请监理,承建方项目组在编制采购计划时可包括的内容有______。①第三方系统测试服务②设备租赁③建设方按照进度计划提供的货物④外部聘请的项目培训
•Lookatthestatementsandthecompanynewsreportsbelow.•Whichnewsreport(A,B,CorD)doeseachstatement1-7referto?
Imaginethis:youwakeupeachmorningtofindyoursisterlyingbesideyou.Togetdressedandtieyour【B1】______,youuseone
最新回复
(
0
)