首页
登录
职称英语
Pollution occurs whenever unnatural substances are introduced into an envir
Pollution occurs whenever unnatural substances are introduced into an envir
游客
2023-12-06
62
管理
问题
Pollution occurs whenever unnatural substances
are introduced into an environment. Most ocean
pollution caused by humans are concentrated along the 【M1】______
coasts of continents. Let’s see what some of the pollutants are.
Industrial wastes sometimes get to seawater. Often, 【M2】______
these contain(concentrations)of metals and chemicals
that harm organisms. Solid wastes, such as plastic bags
and fishing line left lying on the beaches, can entangle
in animals. Medical waste such as needles, plastic 【M3】______
tubing, and bags are a threat to both humans and
animals.
Pesticides, which include herbicides(weed killers)
and insecticides(insect killers), used in farming
reaching the ocean as runoff. They become 【M4】______
concentrating in the tissues of marine organisms. 【M5】______
Crop fertilizers and human sewage create a
different kind of problem. They fertilize the water. This
causes some types of algae to produce very rapidly. 【M6】______
When these algae die, they’re decomposed by huge
amount of bacteria. The problem is that the bacteria use 【M7】______
up much of the oxygen in the water during respiration.
However, other organisms such as fish can’t get the 【M8】______
oxygen they need, and they die.
Oil spills also pollute the ocean. You’ve heard in
the news about major oil spills caused to tanker 【M9】______
collisions, and leaks at offshore oil wells. Another
source of oil pollution is oil mixed with wastewater
that’s pumped out of ships. In addition to these
resources, oil discarded from cars and industries is 【M10】______
sometimes dumped into streams. It, too, eventually
reaches the ocean. [br] 【M5】
选项
答案
concentrating—concentrated
解析
非谓语动词错误。动词的现在分词一ing和过去分词一ed是学生比较容易弄混的两种形式。现在分词形式一般表示主语的使动而过去分词表示主语的被动。举个简单的例子,“这部电影非常打动人”的译文应该是This film is very touching;但主语如果改为人,“他被这部电影深深地打动了”,则应使用touch的过去分词形式He is deeply touched by the film。本句的意思是“这些农药被集中到海洋生物的组织当中”,因此应该是过去分词形式concentrated。
转载请注明原文地址:https://tihaiku.com/zcyy/3250493.html
相关试题推荐
______firstintroducedChristianityintoEngland.A、JuliusCaesarB、St.Augustin
NewDealwastheprogramofsocialandeconomicreformsintroducedbyPresident
WheneverIspeaktoeducatorsandinterestedlaypeopleaboutneuroplasticity
WheneverIspeaktoeducatorsandinterestedlaypeopleaboutneuroplasticity
WheneverIspeaktoeducatorsandinterestedlaypeopleaboutneuroplasticity
BiancaSforzaattractedfewstareswhenintroducedtotheartworldonJanua
BiancaSforzaattractedfewstareswhenintroducedtotheartworldonJanua
BiancaSforzaattractedfewstareswhenintroducedtotheartworldonJanua
Whatisthefindingintroducedbytheinterviewee?[br][originaltext]W;I’mKe
Whatisthefindingintroducedbytheinterviewee?[br][originaltext]W;I’mKe
随机试题
Scatteredaroundtheglobearemorethan100smallregionsofisolatedvolca
Completethenotesbelow.WriteNOMORETHANTHREEWORDSforeachanswer.
中国是发展中国家中的大国,其工业化正在快速发展。随着经济水平的提高,环境问题也变得日益严峻,因此环境保护被国家视为一项基本国策。近年来,国家采
确定沥青混合料最佳沥青用量时,横坐标是沥青用量而不能是油石比。()
长江三角洲城市2002年主要经济指标一览表 长江三角洲城市中,2002年
男性,39岁,发作时先觉胃部一股气体上升,并有咀嚼、吞咽动作,喃喃自语,走动,似
肺炎链球菌的致病力主要是由于 A.细菌内毒素的作用B.细菌外毒素的作用 C
如果预期标的物价格上涨,可卖出看跌期权。
S-美芬妥英在慢代谢(PM)者体内,羟基化代谢明显减弱,同时服用普萘洛尔、奥美拉
税务机关采取的下列措施中,属于强制执行措施的有()。A.查封纳税人的价值相当于
最新回复
(
0
)