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
Biologist: Species with broad geographic ranges probably tend to endure longer than species with narrow ranges. The broader a sp
Biologist: Species with broad geographic ranges probably tend to endure longer than species with narrow ranges. The broader a sp
admin
2022-10-18
70
问题
Biologist: Species with broad geographic ranges probably tend to endure longer than species with narrow ranges. The broader a species’ range, the more likely that species is to survive the extinction of populations in a few areas. Therefore, it is likely that the proportion of species with broad ranges tends to gradually increase with time.
The biologist’s conclusion follows logically from the above if which of the following is assumed?
选项
A、There are now more species with broad geographic ranges than with narrow geographic ranges.
B、Most species can survive extinctions of populations in a few areas as long as the species’ geographic range is not very narrow.
C、If a population of a species in a particular area dies out, that species generally does not repopulate that area.
D、If a characteristic tends to help species endure longer, then the proportion of species with that characteristic tends to gradually increase with time.
E、Any characteristic that makes a species tend to endure longer will make it easier for that species to survive the extinction of populations in a few areas.
答案
D
解析
This question asks us to find an assumption that allows the biologist’s conclusion to be logically drawn if made in conjunction with the premise? of the biologist’s argument.
The biologist claims that species with broader ranges are more likely to survive the extinction of populations in certain areas than are species with narrow ranges. The biologist concludes that over time the proportion of species with broader ranges will probably increase.
Note that the argument as it stands is not logically valid: it is possible that if species that now have broad ranges survive the extinction of populations with narrow ranges, the proportion of species with broad ranges could still decline, That is, decimation of populations in certain areas may in fact cause the ranges of species that now have broad ranges to shrink in size, thereby becoming narrow ranges.
Were this to happen at a faster pace than the extinction of species that currently have narrow ranges, the proportion of species with broad ranges would decline rather than increase. The correct answer to this question must rule out this possibility.
A This choice does not rule out the possibility that the proportion of species that have broad ranges would decline.
B This choice does not rule out the possibility that the proportion of species that have broad ranges would decline.
C This choice does not rule out the possibility that the proportion of species that have broad ranges would decline. In fact, this assumption helps to support the claim that as certain populations of a species that once had a broad range die out, that species’ range could narrow.
D Correct. This assumption rules out the possibility described above; furthermore, it rules out any other possibility that allows the biologist’s conclusion to be false even if the premises were true.
E This choice does not rule out the possibility that the proportion of species that have broad ranges would decline.
The correct answer is D.
转载请注明原文地址:https://kaotiyun.com/show/8UkO777K
本试题收录于:
GMAT VERBAL题库GMAT分类
0
GMAT VERBAL
GMAT
相关试题推荐
Idon’tliketodisturbyou,becauseyou’requitetired______today.
TheUnitedStates【C1】______alargepartoftheNorthAmericancontinent.ItsneighborsareCanada【C2】______thenorth,andMexico
Woman:DoyougetthePublicBroadcastingSystemonTV?Man:Yes,everybodygetsPBS.【D5】______Woman:It’sboringandoftenput
Peoplesaythatmoneycannotbuyhappiness.ThiswastrueforHowardHughes.Hewasoneoftherichestandmostpowerfulmenof
Spending50minuteswithacellphoneclosetoyourearisenoughtochangebraincellactivityinthepartofthebrainclosest
Nooneknowshowmanlearnedtomakewords.Perhapshebeganbymakingsoundslikethosemadebyanimals.Perhapshegruntedlik
IftheDakotaAccessPipeline(输油管道)iscompleted,itwillcarrynearlyhalfamillionbarrelsofoilacrossfourstateseveryda
Regretisascommonanemotionasloveorfear,anditcanbenearlyaspowerful.So,inanewpaper,tworesearcherssetabout
Themulti-billion-dollarWesternpopmusicindustryisunderfire.ItisbeingblamedbytheUnitedNationsforthedramaticris
Mainstreameconomictheoryholdsthatmanufacturers,indecidingwhatkindsofproductstomanufactureandwhatformthoseprodu
随机试题
全科医生的工作任务包括
打印文档时不可以设定的是
在工作面上具有相同照度条件下,下列哪种类型的灯具最节能?(2003,32)
特种设备的使用,事关()。
下列工作中,属于工程招投标阶段造价管理内容的是()。
人力资源管理策略中,职位晋升阶梯在吸引策略中体现的是()的特点。
“两个共同”是新世纪新阶段民族工作的主题。“两个共同”是指()。
①一些地球环境的历史变化没有深海海底的钻探取样是可能发现不了的②到533万年前海面上升,与大西洋的通道恢复时,“地中海盐度危机”便告结束,大西洋水又呈瀑布状泻入地中海③现在查明,由于地中海四面被陆地包围,只有水深300米的直布罗陀海峡与
某单位要从100名报名者中挑选出20名献血者进行体检。最不可能被挑选上的是1993年以来已经献过血,或是1995年以来在献血体检中不合格的人。如果上述断定是真的,那么以下哪项所言及的报名者最有可能被选上?
Thejobofraisingchildrenisatoughone.Childrendon’tcomewithaninstruction【C1】______.Andeachchildisdifferent.Sop
最新回复
(
0
)