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
2009-06-24
44
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、By taking over ponds.
B、By constructing sewers.
C、By building dams on rivers.
D、By flooding marshes.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/UoTd777K
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
MobilePhonesMobilephonesshouldcarryalabeliftheyprovedtobeadangeroussourceofradiation,accordingtoRobertBe
FinancingCollegeTrainingHighschoolstudentswho,aftergraduation,wouldliketocontinuetheireducationarefrequently
EconomicGrowthTheeconomyofanationrequires【46】.Totaloutputmustgrowifthecountryistoabsorbabout1.5millionn
Universitiesusuallygivediplomasorcertificatestostudentswhocompletecourserequirementsadequately.
LifeatAichiUniversityI’mYamamotoMika,a22-year-oldJapanesegirl.I’dliketoinviteyoutoAichi
Batsareextremelyshycreaturesandavoidhumansifatallpossible.
WashoeLearnedAmericanSignLanguage1Ananimalthatinfluencedscientificthoughthasdied.AchimpanzeenamedWashoeandbor
WashoeLearnedAmericanSignLanguage1Ananimalthatinfluencedscientificthoughthasdied.AchimpanzeenamedWashoeandbor
Pleaseputupyourhandsifyouhaveanyquestions.
Whatdoesthepassagemainlydiscuss?Whichofthefollowingisclosestinmeaningtothephrase"passeson"asusedinline14
随机试题
下列属于常用防腐剂的是
项目逻辑框架的水平组列项目包括()。
企业在作出租赁或是购买设备的决策之前,必须考虑的因素有()。
在Word2003中默认的文档视图是______视图。
销售量的不确定性在于完成周期中对库存的预测数量超过需求量。
2010年,我国的专利申请总量为122.2万件,同比增长25.1%。在2010年的三类专利申请中,发明专利申请39.1万件,较上年增长24.4%,占专利申请总量的32.0%;实用新型专利申请41.0万件,较上年增长31.9%,占专利申请总量的33.5%;外
2012年年末,合肥市规模以上工业企业2087户,全年实现工业增加值1653.54亿元,比上年增长17.4%。其中,轻工业增加值653.28亿元,增长16.5%;重工业增加值1000.26亿元,增长18%。战略性新兴产业完成产值1598.74亿元,比上年增
以节俭清正_______奢靡之风,_______勤俭节约传统美德和“八项规定”,保持质朴和勤俭的本色,刹住公款吃喝,规范接待标准,精简活动规模,杜绝浪费陋习,狠刹挥霍享乐和骄奢淫逸的不良风气。依次填入画横线处最恰当的一项是()。
智囊团
在窗体上画一个名称为Command1的命令按钮,然后编写如下事件过程: OptionBase1 Private Sub Command1_Click( ) Dima a=Array(1,2,3
最新回复
(
0
)