首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
Passage 2 Birds are a critical part of our ecological system. But more than ...
Passage 2 Birds are a critical part of our ecological system. But more than ...
admin
2020-12-24
30
问题
Passage 2
Birds are a critical part of our ecological system. But more than ever, birds are threatened byhuman pollution and climate change.
We need the birds to eat insects, move seeds and pollen around, transfer nutrients from sea toland, clean up after the mass death of the annual Pacific salmon runs, or when a wild animal fallsanywhere in a field or forest.
How could we enjoy spring without the birds flitting busily in our garden or dropping by tocheck out the flowers in our urban window box Can you contemplate America without the soaringbald eagle, or even those scavengers like the pigeons and gulls that clean up discarded food scrapson 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, theremains of any shot deer peppered with fragments of lead bullets. Loons, ducks and other water birdswill be poisoned by lead bullets and lead fishing sinkers if we allow such objects to drop in theirfeeding 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 riversand 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 fuelstops and rest stations, and from constructing golfing resorts and factories in their feeding andbreeding grounds.
Seabirds are among the most endangered vertebrate species on the planet, with the InternationalUnion for Conservation of Nature classifying 97 species as globally threatened, and 17 in the highestcategory of critically threatened. Of greatest concern are the pelicans of the southern oceans and thespectacular, but slow-breeding albatross.
Plastic bags must be eliminated from natural environments so sea and shore birds don′tmistakenly carry such debris back to feed their chicks, with invariably lethal consequences. Thealbatross, cormorants and herons need us to stop over-fishing and compromising their normal foodsupply.
The pelicans, penguins and all the birds that inhabit, or visit, our coastlines need us to ensurethat we do not dump oil into gulfs and bays, or release so much carbon dioxide into the atmospherethat the oceans turn acidic and we lose the mussels and oysters, the mass of calcareous plankton thatfeeds 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 monitorthe health of the natural world for us, provided that we, in turn, make the effort to access that keyinformation.
The birds and humans are both large, complex and ultimately vulnerable organisms that inhabitthe 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 diminishedourlives 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://ti.zuoweng.com/ti/LCT8KKKQ
相关试题推荐
Passage2 Americanstodaydon′tplaceaveryhighvalueonintellect.Ourhe...
Passage2 Americanstodaydon′tplaceaveryhighvalueonintellect.Ourhe...
Passage2 Americanstodaydon′tplaceaveryhighvalueonintellect.Ourhe...
Passage2 Americansdon’tliketolosewars.Ofcourse,alotdependsonhowy...
Passage2 Americansdon’tliketolosewars.Ofcourse,alotdependsonhowy...
Passage2 Americansdon’tliketolosewars.Ofcourse,alotdependsonhowy...
Passage2 Ofallthecomponentsofagoodnight′ssleep,dreamsseemtobe...
Passage2 Ofallthecomponentsofagoodnight′ssleep,dreamsseemtobe...
Passage2 ForcenturiesinSpainandLatinAmerica,headinghomeforluncha...
Passage2 ForcenturiesinSpainandLatinAmerica,headinghomeforluncha...
随机试题
下列说法正确的是( )。 A、21世纪的养老,主要是指从正常的工作状态中退下
既可化湿止呕,又能发表解暑的药物是 A、佩兰 B、砂仁 C、白豆蔻 D、
将拟建工程场地一定范围内的新建、计划扩建、原有和拟拆除的建筑物、构筑物连同周围的
要求灵敏度适中、线性好、性能稳定、价格便宜,在氧化及中性环境中测温,应选择的热电
下面哪种措施有利于减轻不均匀沉降的危害?( )
妊娠合并心脏病的孕妇产褥期的处理,错误的是
患者男性,54岁,确诊为乙肝后肝硬化6年,腹胀伴双下肢浮肿1个月,加重伴无尿2天。查体:蛙状腹,液波震颤阳性,双下肢可凹性浮肿。化验血钠122mmol/L...
王国维云:“中西之学,盛则倶盛,衰则俱衰,风气既开,互相推助。”霍德在《阅读过去》中文版序中承认中国是世界考古学中心地域之一,他期待倾听不同的声音,探索更...
根据《母婴保健法》规定,可以申请医学技术鉴定的是A.对孕妇产妇保健服务有异议的B.对婚前医学检查结果有异议的C.对婚前卫生咨询有异议的D.对孕妇期保健服务
在城市房屋拆迁行政裁决中,被拆迁人是房屋拆迁管理部门的,由()裁决。A:上级房屋拆迁管理部门B:人民法院C:县级以上人民政府D:同级人民政府