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
考研
Turtles have an unfortunate habit of eating plastic objects floating in the sea. These then get trapped in their alimentary cana
Turtles have an unfortunate habit of eating plastic objects floating in the sea. These then get trapped in their alimentary cana
admin
2022-11-16
51
问题
Turtles have an
unfortunate
habit of eating plastic objects floating in the sea. These then get trapped in their alimentary canals, cannot be broken down by the animals’ digestive enzymes and may ultimately kill them. It is widely assumed that this liking for plastics is a matter of mistaken identity. Drifting plastic bags, for instance, look similar to jellyfish, which many types of turtles love to eat. Yet lots of plastic objects that end up inside turtles have no resemblance to jellyfish. Joseph Pfaller of the University of Florida therefore suspects that something more complicated is going on. As he writes in Current Biology, he thinks that the smell of marine micro-organisms which colonize floating plastic objects induces turtles to feed.
The idea that the smell of plastic rubbish might lure animals to their doom first emerged in 2016. Researchers at the University of California, Davis, noticed that certain chemicals, which are released into the air by micro-organism-colonized plastics, are those which many seabirds sniff to track down food. These chemicals mark good places to hunt because they indicate an abundance of the bacteria that lie at the bottom of marine food chains. The researchers also found that birds which pursue their food in this way are five or six times more likely to eat plastic than those which do not.
Since turtles are known to break the surface periodically and sniff the air when navigating towards their feeding areas, Dr. Pfaller theorized that they are following these same chemicals, and are likewise fooled into thinking that floating plastic objects are edible.
To test that idea, he and his colleagues set up an experiment involving loggerhead turtles, a species frequently killed by plastic. They arranged for 15 of the animals, each around five months old, to be exposed, in random order, to four smells delivered through a pipe to the air above an experimental area. Two of the smells proved far more attractive to the animals than the others. When sniffing both the smell of food and that of five-week-old bottles turtles kept their noses out of the water more than three times as long, and took twice as many breaths as they did when what was on offer was the smell of fresh bottle-plastic or clean water vapour. On the face of it, then, the turtles were responding to the smell of old bottles as if it were the smell of food.
Though they have not yet tested whether the chemical is the culprit, Dr. Pfaller and his colleagues think it is the most likely candidate. In an unpolluted ocean, pretty well anything which had this smell would be edible—or, at least, harmless. Unfortunately, five-week-old plastic bottles and their like are not.
What does the author mean by saying "unfortunate" (Line 1, Paragraph l)?
选项
A、Plastic rubbish is distasteful for marine creatures.
B、Animals are likely to die from eating plastic objects.
C、Turtles often mistake plastic bags for tasteful jellyfish.
D、Floating plastics are covered by micro-organisms.
答案
B
解析
根据题干关键词unfortunate和Line 1,Paragraph 1可定位到第一段第一句。这里unfortunate被用来描述海龟吞食海上漂浮的塑料垃圾的习惯,那么在文中找到作者对该习惯进一步描述的语言,即可推断出作者使用该词的用意。首段第二句紧接着说明该习惯所带来的不幸后果,即“这些塑料制品阻塞海龟的消化道,无法被其体内的消化酶分解,最终可能会导致海龟死亡”。B项Animals are likely to die from eating plastic objects (动物可能因为吃塑料制品而死掉)和原文所述意思一致,且plastic objects是原文these指代的对象,are likely to die from是原文may ultimately kill them的同义替换,故B项为正确答案。第一段中并未提到塑料垃圾的口感如何,A项中的“不合口味的”无中生有,可排除;第一段第三至四句分析了一种海龟喜欢吃塑料垃圾的可能原因,指出“漂浮着的塑料袋看起来像许多种海龟喜欢吃的水母”,而该题问的是作者为什么要用unfortunate来评价海龟喜欢吃塑料的习惯,而非其背后的原因,故C项虽与原文语义一致,但是答非所问,应排除;D项来自第一段最后一句话“他认为是附着在漂浮的塑料物体上的海洋微生物产生的气味引诱海龟进食”,这句话同样与作者的评价无关,故D项也可排除。
转载请注明原文地址:https://jikaoti.com/ti/sr1iFFFM
0
考研英语二
相关试题推荐
Inthepast20yearsalone,threecoronaviruseshavecausedmajordiseaseoutbreaks.FirstcametheoriginalSARSvirusin2002.
Inthepast20yearsalone,threecoronaviruseshavecausedmajordiseaseoutbreaks.FirstcametheoriginalSARSvirusin2002.
ThecollapseofBritain’stradewiththeEUwillcontinueintothesummerafterthefailuretorecruitupto30,000customsagen
Everysuit-dresssoldbythelikesofGucciorGivenchyisbilledasamust-havethatseason.But,itturnsout,somearemorem
Nobodyeverproteststhatanelementaryschoolshouldbedescribedas"manned"insteadof"staffed,"butdaretosuggesta"men
ManyAmericanshavebeenfeedingababyaspirinonceaday,believingitwouldprotectthemfromaheartattack,astroke,ande
Theworldeconomyhasrunintoabrickwall.Despitecountlesswarningsinrecentyearsabouttheneedtoaddressaloominghung
Britain’sprivateschoolsareoneofitsmostsuccessfulexports.Thechildrenofthewealthy【C1】________tothem,whetherfromC
Britain’sprivateschoolsareoneofitsmostsuccessfulexports.Thechildrenofthewealthy【C1】________tothem,whetherfromC
LastSeptember,theU.S.governmentannouncedthatitsbirthratefellto"anotherrecordlow".Morallyspeaking,there’snothing
随机试题
以下药物一般不呈现“药源性胃肠道损伤”的是
患者,男,50岁,骤发剧烈腹痛,初起时剑突下偏右呈发作性胀痛,迅速波及全腹呈持续性,并向后腰背放射,伴恶心、呕吐,查体:体温38.9℃,BP110/80mmHg,脉搏110/min呼吸32/min心肺检查(-),全腹彭隆,伴明显肌紧张及广泛压痛,反跳痛
急性根尖周炎的患牙扪诊出现深部波动感的阶段是
由分部工程双代号网络计划如下图所示,则工作C的自由时差为()天。
上大学的收益不包括()。
我国古代很早就有把课内活动与课外活动结合起来的思想,下列选项中表达了这一思想的是()。
传统的动物资源保护措施主要是划定保护区或建立保种基地。这些措施能很好地保护物种的多样性,但也存在一些缺点:保护区面积大,偷猎现象屡禁不止;建立良种基地保护地方品种投资大,时间长,容易出现近亲繁殖、物种衰退等现象。试管、克隆、冷冻保存等生物技术新成果的问世,
给定材料材料1互联网技术的飞速发展,尤其是移动互联网技术的不断成熟,催生了一大批勇于表达自我、热衷传递信息的自媒体。微博、微信、手机程序的迅速崛起,促使信息生产、整合、传播方式发生了革命性变化,开启了信息传播的新模式。人人都有麦克风、摄
同卵双生子的大脑在遗传上是完全相同的。当一对同卵双生子中的一个人患上精神分裂症时,受感染的那个人的大脑中的某个区域比没有受感染的那个人的大脑中的相应区域小。当双胞胎中的两个人都没有精神分裂症时,两人就没有这样的差异。因此,这个发现为精神分裂症是由大脑的物质
如果公开课的课程没有得到教育部门的批准,那么高校不能开设;倘若公开课的课程没有受到学生的广泛欢迎,那么授课教师需要不断的反思自己,要么是课程设置得不合理,要么是授课风格不符合学生的口味;只有受到学生广泛欢迎的公开课才会得到教育部门的批准。某高校目前开设了公
最新回复
(
0
)