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
A、Because salmon live in the streams near the banks. B、Because the banks help prevent erosion of the soil. C、Because the banks c
A、Because salmon live in the streams near the banks. B、Because the banks help prevent erosion of the soil. C、Because the banks c
admin
2021-11-26
49
问题
Today we continue our series on ecology and conservation with a look at a particularly endangered member of the black bear family. [16] One in ten black bears is actually born with a white coat, which is the result of a special gene that surfaces in a few. Local people have named it "the spirit bear". And according to the legends of these communities, its snowy fur brings with it a special power. Because of this, it has always been highly regarded by local people—[17] so much that they do not speak of seeing it to anyone else. It is their way of protecting it when the strangers visit the area.
The white bear’s habitat is quite interesting. The bear’s strong relationship with the old-growth rainforest is a complex one. The white bear relies on the huge centuries-old trees in the forest in many ways. For example, the old-growth trees have extremely long roots that help prevent erosion of the soil along the banks of the many fish streams. [18] Keeping these banks intact is important because these streams are home to salmon, which are the bear’s main food source. In return, the bear’s feeding habits nurture the forest. As the bears eat salmon, they discard the skin and bone in great amounts on the forest floor, which provide vital nutrients. These produce vegetation that sustains thousands of other types of life forms, from birds to insects and more.
Today, the spirit bear lives off the coast of the province of British Columbia on a few islands. There is great concern for their survival since it is estimated that less than two hundred of these white bears remain. The best way to protect them is to make every effort to preserve the delicate balance of their forest environment—in other words, their ecosystem.
[19] The greatest threat to the bear’s existence is the loss of its habitat. Over many years, logging companies have stripped the land by cutting down a large number of trees. In addition, they have built roads which have fractured the areas where the bear usually feeds, and many resting sites have also been lost The logging of the trees along the streams has damaged the places where the bears fish. To make matters worse, the number of salmon in those streams is declining because there is no legal limit on fishing at the moment.
16. What makes "the spirit bear" look special?
17. What do local people do to protect "the spirit bear" from strangers?
18. Why is keeping banks intact important for bears?
19. What is the biggest threat to the bear?
选项
A、Because salmon live in the streams near the banks.
B、Because the banks help prevent erosion of the soil.
C、Because the banks can help nurture the forest.
D、Because the banks can feed abundant vegetation.
答案
A
解析
录音提到,保持河岸完整之所以重要是因为白熊的主食鲑鱼正是生活在溪里(home to salmon)。A项的live in是对原词home to的同义转述,故选A项。B项“河岸有助于防止土壤被侵蚀”错误,这是老树的长树根的作用。录音提到白熊的摄食行为能反哺森林,C项“河岸能养育森林”与录音内容不符。D项“河岸能给大量植被供养”错误,实际上是白熊吃完鲑鱼后的骨头为植被提供丰富的营养。
转载请注明原文地址:https://kaotiyun.com/show/mXx7777K
0
大学英语六级
相关试题推荐
SlowHopeA)Ourworldisfullof—mostlyuntold—storiesofslowhope,drivenbytheideathatchangeispossible.Theyare’s
A、Tosavetheexpensesonclothing.B、Tokeepupwiththecurrenttrends.C、Tomeettheexpectationsoffashion-consciousclient
SurfingtheInternetduringclassdoesn’tjuststealfocusfromtheeducator:italsohurtsstudentswho’realreadystruggling
SurfingtheInternetduringclassdoesn’tjuststealfocusfromtheeducator:italsohurtsstudentswho’realreadystruggling
SurfingtheInternetduringclassdoesn’tjuststealfocusfromtheeducator:italsohurtsstudentswho’realreadystruggling
A、Watersports.B、Racinginrivers.C、Storiesaboutwomenswimmers.D、Booksaboutswimming.D题干问的是最近什么流行起来了。短文中提到,人们常常把生命比作水,这可能
A、Sendingallmessagessimultaneouslytotheaudience.B、Learningfromafamouspublic-speakingprofessor.C、Simplifyingandbre
在过去,国会曾公开表示,他们担忧劣等种族可能会污染美国的血统。我们并不主张回到那个时代。
A、Sellingdirecttothepublic.B、Sellingthroughtheirownchains.C、Sellingbyonlinestores.D、Sellingthroughsmallshops.C
A、Heusedallofittoexchangeafreeticket.B、Hetradedhalfofitforfreecoupons.C、Hewenttohavefourfreemealsinar
随机试题
给定程序中函数fun的功能是:将一个由八进制数字字符组成的字符串转换为与其值相等的十进制整数。规定输入的字符串最多只能包含5位八进制数字字符。例如,若输入:77777,则输出将是:32767。请改正程序中的错误,使它能得到正确结果。
A.正视眼B.近视眼C.远视眼D.老视眼E.散光6m以外的物体正好聚焦在视网膜上
可以增强磺脲类药物降血糖效应的药物包括
袋内壁刮治术一般适用于
在7~9层的中高层住宅中,一梯两户的板式住宅与塔式(点式)住宅相比.以下哪一条不是它的优点?
桥梁的五大部件包括()。
甲、乙签订融资租赁合同,甲为出租人,乙为承租人。甲根据乙的选择,向丙购买了1台大型设备,出租给乙使用。乙在该设备安装完毕后,发现不能正常运行。根据合同法律制度的规定,下列表述中,正确的是()。
为了了解高校学生对《知识产权法》基本知识的掌握程度,某教育咨询公司在一所高校内部选取了相同年级的两组学生进行了有奖测试。经阅卷分析发现:第一组学生的优秀率达到了60%,而第二组的优秀率只有20%。咨询公司据此得出结论:该校大学生在对《知识产权法》的了解和掌
MedicalJournalsMedicaljournalsarepublicationsthatreportmedicalinformationtophysiciansandotherhealthprofession
Wouldn’titbegreatifyoucouldjustlookupattheskyandreadtheweatherforecastrightaway?Well,youcan.Theforecast
最新回复
(
0
)