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
职业资格
Birds are a critical part of our ecological system. But more than ever, birds are threatened by human pollution and climate chan
Birds are a critical part of our ecological system. But more than ever, birds are threatened by human pollution and climate chan
admin
2017-02-25
18
问题
Birds are a critical part of our ecological system. But more than ever, birds are threatened by human pollution and climate change.
We need the birds to eat insects, move seeds and pollen around, transfer nutrients from sea to land, clean up after the mass death of the annual Pacific salmon runs, or when a wild animal falls anywhere in a field or forest.
How could we enjoy spring without the birds flitting busily in our garden or dropping by to check out the flowers in our urban window box? Can you
contemplate
America without the soaring bald eagle, or even those scavengers like the pigeons and gulls that clean up discarded food scraps on our city streets and waterfronts? How diminished our lives would be without
them
?
Scavenging eagles and condors need hunters to behave responsibly and bury, or remove, the remains of any shot deer peppered with fragments of lead bullets. Loons, ducks and other water birds will be poisoned by lead bullets and lead fishing sinkers if we allow such objects to drop in their feeding space.
All sea and shore birds, even the puffins and guillemots of the otherwise pristine Aleutians, need us to make sure that no other heavy metals, like mercury and cadmium, are dumped in rivers and make their way across the oceans.
Birds like the terns, knots and shearwaters that migrate between the far north and deep, deep, south of our planet need people everywhere to cease and desist from filling in their wetland fuel stops and rest stations, and from constructing golfing resorts and factories in their feeding and breeding grounds.
Seabirds are among the most endangered vertebrate species on the planet, with the International Union for Conservation of Nature classifying 97 species as globally threatened, and 17 in the highest category of critically threatened. Of greatest concern are the pelicans of the southern oceans and the spectacular, but slow-breeding albatross.
Plastic bags must be eliminated from natural environments so sea and shore birds don’t mistakenly carry such debris back to feed their chicks, with invariably lethal consequences. The albatross, cormorants and herons need us to stop over-fishing and compromising their normal food supply.
The pelicans, penguins and all the birds that inhabit, or visit, our coastlines need us to ensure that we do not dump oil into gulfs and bays, or release so much carbon dioxide into the atmosphere that the oceans turn acidic and we lose the mussels and oysters, the mass of calcareous plankton that feeds so many creatures, and the coral reefs that nurture enormous numbers of edible species.
Think about it: We share this small green planet. As they fly, feed and nest, the birds monitor the health of the natural world for us. provided that we, in turn, make the effort to access that key information.
The birds and humans are both large, complex and ultimately vulnerable organisms that inhabit the top of the food chain. At the end of the day, their fate will be our fate.
What does the underlined word "them" in PARAGRAPH THREE refer to?
选项
A、Birds.
B、Flowers.
C、Food scrapes.
D、Scavengers.
答案
A
解析
指代题。根据第三段的内容,让读者想象没有鸟类的生活,可以推测“How diminished ourlives would be without them?”中的them指的就是“鸟类”。故选A。
转载请注明原文地址:https://kaotiyun.com/show/RE3v777K
本试题收录于:
英语学科知识与教学能力题库教师资格分类
0
英语学科知识与教学能力
教师资格
相关试题推荐
教学片段:T:Doyouknowwhatcauseswaterpollution?Ss:Factoriespourwastewaterintoriversandlakes.T:Allthefactories?Ss
Birdsareacriticalpartofourecologicalsystem.Butmorethanever,birdsarethreatenedbyhumanpollutionandclimatechan
Asregardssocialconventions,wemustsayawordaboutthewell-knownEnglishclasssystem.Thisisanembarrassingsubjectfor
某位高一英语教师组织了一个关于oilpollution的口语活动,学生们却对该活动没有兴趣,活动难以开展。请分析学生不感兴趣的两个主要原因(8分),并列举组织成功的口语活动应注意的三个主要事项。
Asregardssocialconventions,wemustsayawordaboutthewell-knownEnglishclasssystem.Thisisanembarrassingsubjectfor
Themostsuitablequestiontypetocheckstudents’comprehensionanddeveloptheircriticalthinkingis______.
随机试题
关于康复医学的定义,以下哪项说法不正确
患儿,女,8岁。右上颌中切牙外伤冠折,切角缺损,即刻来院就诊。口腔检查发现:穿髓孔大,探痛明显,可疑扣痛。进行这种治疗成功的关键是
A.糜烂B.棘细胞层内疱C.基底层下疱D.基底细胞液化变性E.溃疡良性黏膜类天疱疮的主要病理变化之一是
《维斯比规则》和《海牙规则》对海运承运人规定的两大基本义务是()。
根据弗洛伊德的观点,由本能的冲动所造成的焦虑是()。
WhichofJohnBunyan’sworkisknownas"theencyclopediawitheternalsignificance"?
下列关于我国古代音乐作品的说法错误的是()。
下列各句中,加下划线的成语使用正确的一项是:
Individualsandbusinesseshavelegalprotectionforintellectualpropertytheycreateandown.Intellectualproperty【C1】_______
小明需要将word文档内容以稿纸格式输出,最优的操作方法是()
最新回复
(
0
)