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
52
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] 【M8】
选项
答案
However—Therefore
解析
篇章错误。本处的考查点在于句子间的逻辑关系。前一句的意思是“细菌消耗掉了大部分的氧气”,显然这就会导致水中的其他生物无法获得足够的氧气,因此前后两句是因果关系而不可能是转折关系。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3250496.html
相关试题推荐
AmongthefourmaximsintroducedbyGrice,whichonemeansthatinconversation
WheneverIspeaktoeducatorsandinterestedlaypeopleaboutneuroplasticity
WheneverIspeaktoeducatorsandinterestedlaypeopleaboutneuroplasticity
WheneverIspeaktoeducatorsandinterestedlaypeopleaboutneuroplasticity
WheneverIspeaktoeducatorsandinterestedlaypeopleaboutneuroplasticity
BiancaSforzaattractedfewstareswhenintroducedtotheartworldonJanua
Whatisthefindingintroducedbytheinterviewee?[br][originaltext]W;I’mKe
Whatisthefindingintroducedbytheinterviewee?[originaltext]W;I’mKellyKl
Themostwell-knownIrishwriterinmoderntimesis______,whointroducedthes
WhointroducedtheHeroicCoupletintoEnglishliterature?A、GeoffreyChaucer.B、
随机试题
Irepliedtohimthus:"Why,sir,itisavaluablething,indeed,tobeaninstr
[originaltext]J:Becausein1987theDepartmentofEducationandScienceestabl
Whichofthefollowingprepositionalphrasescanfunctionasanadverbial?A、They
建筑施工企业各管理层应在作业人员进场前、转岗,()、事故后,采用新技术、新工艺、
非现场监管的监管评级应当遵循()原则。A.全面性原则 B.及时性原则
水电工程安全鉴定是水电工程蓄水验收和枢纽工程专项验收的重要条件,也是确保工程安全
口腔专科病史不包括A.牙体牙髓病史 B.修复治疗史 C.放射影像资料 D.
下列监理文件资料中,建设单位需短期保存的是()A、预付款报审与支付文件 B、工
施工合同履行中,发包人拖欠工程结算款,在收到竣工结算报告及结算资料56天内仍不支
根据《环境影响评价技术导则大气环境》(HJ2.2-2018),污水处理厂扩建项目
最新回复
(
0
)