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
Dogs were first domesticated from wolves at least 17,000 years ago, but perhaps as early as 150,000 years ago based upon recent
Dogs were first domesticated from wolves at least 17,000 years ago, but perhaps as early as 150,000 years ago based upon recent
admin
2012-07-11
67
问题
Dogs were first domesticated from wolves at least 17,000 years ago, but perhaps as early as 150,000 years ago based upon recent genetic fossil and DNA evidence. In this time, the dog has developed into hundreds of breeds with a great degree of 【B1】______. For example, heights at the 【B2】______range from just a few inches to roughly three feet, and colors range from white to black, with reds, grays, and browns 【B3】______in tremendous patterns.
Dogs are highly social animals and this similarity in their 【B4】______behavioral system accounts for their trainability, playfulness, and ability to fit into human 【B5】______and social situations. This has earned dogs a unique position in the 【B6】______of interspecies relationships. The loyalty and 【B7】______that dogs demonstrate as a part of their natural instincts are 【B8】______to be reflections of the human idea of love and friendship, leading many dog owners to view their pets as full-fledged family members. 【B9】______. Dogs play a variety of roles in society and are often trained as working dogs. 【B10】______. In many countries, the most common and perhaps most important role of dogs is as a companion. 【B11】______
【B1】
选项
答案
variation
解析
由空前的of可推测,所填词应是名词。variation在此意为“差别,区别”。
转载请注明原文地址:https://kaotiyun.com/show/LvE7777K
0
大学英语六级
相关试题推荐
Ifsomeoneaccidentallystepsonyourtoe,ithurts.Butdoesithurtmoreifyouthinkhediditdeliberately?That,inessence
Ifsomeoneaccidentallystepsonyourtoe,ithurts.Butdoesithurtmoreifyouthinkhediditdeliberately?That,inessence
PartⅡReadingComprehension(SkimmingandScanning)Directions:Inthispartyouwillhave15minutestogooverthepassagequ
PartⅡReadingComprehension(SkimmingandScanning)Directions:Inthispartyouwillhave15minutestogooverthepassagequ
StudyStylesYouknowwhetheryou’reamorningpersonoranightowl.Youknowwhetheryou’reapickyeaterorahumangarb
StudyStylesYouknowwhetheryou’reamorningpersonoranightowl.Youknowwhetheryou’reapickyeaterorahumangarb
StudyStylesYouknowwhetheryou’reamorningpersonoranightowl.Youknowwhetheryou’reapickyeaterorahumangarb
A、Whichcountryshouldbeallowedtohavenuclearweapons.B、Thetimefortheirnextcoffeeappointment.C、Whetheritismeaning
Directions:Forthispart,youareallowed30minutestowriteashortessayentitledShouldtheStateInterferewithPeople’sS
Iflifeseemsboringanddepressing,perhapsabigdoseofdailyself-esteemhelpisjustthesparkyouneedforahappierlife.
随机试题
肝硬化:
补体的激活途径有______、______、______。
男性,35岁,饮高度白酒450ml后第2天出现上腹及左上腹持续性疼痛、阵发性加重,并向腰背部放射,下列哪种处理不恰当
以无生命的有机物作为主要营养物质的细菌是A.寄生菌B.光能自养菌C.腐生菌D.化能自养菌E.自营菌
经产妇,37岁,妊娠33周,未规律产前检查,诉下肢水肿半个月,头痛3日,今晨出现视物不清及头痛加重,且呕吐2次,急诊来院。若化验血小板计数23×109/L,ALT:105U/L,AST:82U/L,LDH:368U/L,最可能的诊断为
关于挖坑灌砂法测试压实度方法,请回答以下问题。下列不适用于该方法检测的是()。
土地增值税清算审核的主要方法有()。
下列关于契税的表述中,正确的有()。
属于象征性学习的有()
假定w、x、y、z、m均为int型变量,有如下程序段:N=1;x=2;y=3;z=4;m=(W<X)?W:K;m=(m<y)?m:y;m=(m<z)?m:z;则该程序运行后,m的值是【】
最新回复
(
0
)