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
2016-06-10
49
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/WZXd777K
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
PresidentBushintendstoprovideillegalimmigrantswithanopportunitytogetlegalresidencyorAmericancitizenship.
Doyoubelievethatonlyboysdowellinscience?Doesitseemtoyouthat(31)havebettervocabulariesthanboys?(32)yourop
Howmanyplanetsarethereinthesolarsystemrevolvingaroundthesun?
Withunfamiliarhumanbeings,whenweacknowledgetheirhumanness,wemustavoidstaringatthem,andyetwemustalsoavoidign
Themostobviouspurposeofadvertisingistoinformtheconsumerofavailableproductsorservices.Thesecond(31)istosell
Themostobviouspurposeofadvertisingistoinformtheconsumerofavailableproductsorservices.Thesecond(31)istosell
ThefirstspeakerhassomeacademicperformanceintheUnitedStates.
Whatdoesthespeakermainlydiscuss?
Writeanarticletitledas"KnowledgeEconomy".Youshouldwriteitaccordingtothefollowingoutline.Youshouldwriteno
______wasopenedtomepublicasearlyasl978?______isofhigherartisticqualitythanmostimperialtombs?
随机试题
正常成人的细胞内液约占体重的()
有关脂肪肉瘤的描述,错误的是
CT扫描注意事项中不包括
某儿童医院住院部发生一起医疗纠纷,一名患儿因淘气蹬爬医院楼道中的梯子,不慎触及表皮破裂的电线并从梯子上摔下,致重伤。医院的责任在于未履行
下列关于固定资产会计处理的表述中,正确的有()。(2012年)
2013年7月某旅游团在云台山游览时有一名游客突然出现大汗、口渴、头痛、眼花、恶心、发烧等现象,导游员根据这些症状大致能判断这名游客属于()
—Whydon’twetakealittlebreak?—Didn’twejusthave______?
上层建筑对经济基础具有反作用,上层建筑反作用的性质归根到底取决于它
齐次方程组有非零解,则A=________。
MPLSVPN承载平台上的设备主要由各类路由器组成,其中(3)是MPLS核心网中的路由器,这些路由器只负责依据MPLS标签完成数据包的高速转发,(4)是MPLS核心网上的边缘路由器,负责待传送数据包的MPLS标签的生成和弹出,还将发起根据路由建立交换标签
最新回复
(
0
)