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
外语
What does the speaker mainly discuss?
What does the speaker mainly discuss?
admin
2014-01-27
52
问题
What does the speaker mainly discuss?
I want to talk today about some studies. They seem to indicate that there is a startling world-wide decline in the number of amphibians, such as frogs, toads and salamanders. There’s little doubt that one reason why the number of amphibians is declining is their habitats have been destroyed when the developers fill in ponds and marshes to build houses. Amphibians can’t just move somewhere. They need water to lay their eggs in. Another problem is the growing fish industry. Another range of popular pool fish such as carp have been introduced to many lakes and ponds all over the world. Raising and selling these fish can be profitable, but the fish eat the eggs and offspring of amphibians that were already living in the lakes and ponds. Other factors could be contributing to the decline include acid rain and the spread of pesticide residues. Many pesticides that farmers added to their crops are eventually washed away by the rain and end up in ponds and other bodies of water where amphibians live. Amphibians are especially vulnerable to pesticides dissolved in the water because of their moist skins. Water can pass through amphibians allowing toxins dissolved in the water to enter the amphibians’ body.
选项
A、Pesticides can cause an amphibian’s skin to dry out.
B、Pesticides kill the insects that amphibians depend on for food.
C、Dissolved pesticides can easily enter amphibian’s bodies.
D、Amphibians may eat plants that have been treated with pesticides.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/lRXd777K
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
Theindexisthegovernment’schiefgaugeoffutureeconomicactivity.
______thegamebeganinEnglandinthe1880s.______apointsystemoncourtwasintroduced.
Thepassageismainlyconcernedwith______.Farmersshouldnotbeblamedfortherisebecause______.
theclimateaffectsthefuturesustainableagriculturaldevelopment?pollutioncontrolneedsthesupportoftechnologyandtech
theclimateaffectsthefuturesustainableagriculturaldevelopment?avarietyofspeciesareonthedecrease?
"Itdoesn’tmatterwhatethicalassumptionsyouuse",saysMichaelGrubb,anexpertonclimatechangepolicy,coldfinancialarg
______bythelate1990sitspercapitaGNPwasthehighestinScandinavia?______itseconomywasgraduallyconvertedfromtradi
Inaperfectlyfreeandopenmarketeconomy,thetypeofemployer—governmentorprivate—shouldhavelittleornoimpactonthee
Writeanarticletitledas"KnowledgeEconomy".Youshouldwriteitaccordingtothefollowingoutline.Outline:1)anewkn
Consumersandproducersobviouslymakedecisionsthatmoldtheeconomy,butthereisathirdmajorelementtoconsidertherole
随机试题
FX系列可编程序控制器中的ORI指令用于()。
呼吸衰竭患儿的护理哪项是错误的
某岩石的实测单轴饱和抗压强度Rc=55MPa,完整性指数Kv=0.8,野外鉴别为厚层状结构,结构面结合良好,锤击清脆有轻微同弹。按照工程岩体分级标准,该岩石的基本质量等级应为()。
在包容液体的密封工作空间里,依靠其容积的周期性变化,把能量周期地传递给液体,使液体的压力增加并将液体强行排出,所指的泵是()。
事业单位办理备案登记时,需提供行政属地( )主管部门的证明材料。
甲企业为增值税一般纳税人,2012年度至2014年度发生的与无形资产有关业务如下:(1)2012年1月10日,甲企业开始自行研发一项行政管理用非专利技术,截至2012年5月31日,用银行存款支付外单位协作费74万元,领用本单位原材料成本26万元(不考虑增
主张“世界上除了运动着的物质之外,什么也没有”的观点,属于()。
Weight(体重)isoneofthetaboosubjects.InAmerica,itisOK,orevengood,tobethinbutitisanembarrassment(尴尬)tobeover
ThenumberofscientistsandengineersgoingtoAmericatostudyandworkisdroppingprecipitously.Animportantreasonisthe
HowNativeAmericansdevelopedcornisapuzzling,fornowildcomhaseverbeendiscovered.
最新回复
(
0
)