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、How they behave toward ants from other nests. B、What they usually eat. C、Why they are becoming extinct. D、Why they were brough
A、How they behave toward ants from other nests. B、What they usually eat. C、Why they are becoming extinct. D、Why they were brough
admin
2017-02-24
41
问题
Today, we are going to continue our discussion of social insects, focusing on the Argentinean, which as you might guess is a species of ant that are natives to Argentina. We’ll consider what happened to this type of ant after some members of the species move to California from their original habitat. Ok, well, in Argentina, these Argentine ants behave like most ant species around the world. They fight other ants of the same species if those ants are from some other nests. But the Argentine ants living in California behave differently. Ants from different nests form a single large colony. Within this colony, there is little aggression among ants from different nests. And when they fight insects from outside their colony, the Argentine ants can quickly recruit a huge army from their network of nests. This of course gives them advantages over other ants’species. So then, why do Argentine ants behave differently in California than they do in Argentina? Well, using genetic testing, researchers found that all the Argentine ants in California were very similar genetically. You see, when the first Argentine ants came to California, their population must have been very small, and all the later generations of Argentine ants there must bedescended from the same few ancestors. So they are all closely related. This discovery is important, because for most social insects, membership in a colony is based on how closely related they are genetically. Now listen to the following recording and answer questions 22 to 25.
22. What aspect of Argentine ant is mainly discussed?
23. What does the professor say about Argentine ants that live in Argentina?
24. What’s the characteristic of Argentine ants in California?
25. What did genetic testing indicate about the Argentine ants in California?
选项
A、How they behave toward ants from other nests.
B、What they usually eat.
C、Why they are becoming extinct.
D、Why they were brought to California
答案
A
解析
主旨题。根据We’ll consider what happened to this type of ant after some members of the species move to California from their original habitat.Ok,well,in Argentina,these Argentine ants behave like most ant species around the world.和讲座全部内容可知,主要讨论了阿根廷蚂蚁对来自其他蚁巢的蚂蚁是如何表现的。因此,正确答案为A。
转载请注明原文地址:https://kaotiyun.com/show/thU7777K
0
大学英语六级
相关试题推荐
A、MakeanappointmentwithDr.Chen.B、Waitforaboutthreeminutes.C、Callagainsometimelater.D、Trydialingthenumberagai
A、Becausesheisontheexecutivestaff.B、Becausesheisfamiliarwiththecompany.C、Becauseshehasknowledgeofmanagement.
A、805miles.B、1,000miles.C、1,305miles.D、1,500miles.C根据原文,本来有2,805miles,花了2,000miles换餐券,使用租车服务,又增加500里程数,所以最后账户里有1,305m
Adultsaregettingsmarteraboutbowsmartbabiesare.Notlongago,researcherslearnedthat4-day-oldscouldunderstand【B1】__
Morethanfiftyyearsago,theUnitedNationsdeclaredthatliteracyisabasichumanright.It’sveryimportantfor【B1】______th
A、Itisbasedonalotofresearch.B、Itcanbefinishedinafewweeks’time.C、Ithasdrawncriticismfromlotsofpeople.D、I
A、ProfessorSmithdoesn’tholdseminarsordiscussionsinhislectures.B、StudentssometimesfallasleepinProfessorSmith’sle
A、Trytosavemoneymonthbymonth.B、Trytoexerciseeachday.C、Trytobuysomenecessaryitems.D、Trytosticktoabudgetea
EdgarPoe,anAmericanwriter,wasbornin1809.Hisparentswereactors.Edgarwasababywhenhisfatherleftthefamily.Hew
A、Securemorestudentparkingspaces.B、Preserveopenspacesoncampus.C、Getmorefundingfortheirgroup.D、Scheduleameeting
随机试题
企业通过向消费者销售产品、信息或服务来得到收入,属于()模式。
2008年6月6日,B炼油厂油罐区的2号汽油发生火灾爆炸事故,造成1人死亡、3人轻伤,直接经济损失420万元。该油罐为拱顶罐,容量200m3。油罐进油管伸入罐内,但未伸到罐底。罐内原有液位计,因失灵己拆除。2008年5月20日,油罐完成了清罐检修
对设计工作进行监理时,在设计准备阶段,监理工程师的工作内容应包括( )。
式①和式②分别表示的是绿色植物体内进行的两种生理活动,请根据此式或图示回答问题:式②中表示的能量来源是式①中的_______。
下图为我国天然气资源生产与消费的空间迁移情况示意图。2000年,我国天然气资源的生产重心接近()。
下列历史事件时间排序正确的一组是:
具有证实倾向的推理类型是
如果小王考上博士并且小刘没有考上博士,那么温丽一定考不上博士。如果以上命题为真,再加上什么前提,可以推出:小刘考上博士了?
在图书数据库中查扰书名包含“数据库”的所有书的最高价、最低价和平均价。其对应的查询语句如下: SELECTMAX(单价)AS最高价,MIN(单价)AS最低价,AVG(单价)AS平均价; FROM图书; WHERE书名【】。
(1)利用查询设计器创建查询,从xuesheng和chengji表中找出所有1982年出生的汉族学生记录。查询结果包含“学号”、“姓名”、“数学”、“英语”和“信息技术”5个字段;各记录按“学号”降序排序;查询去向为表tablel。最后将查询保存在quer
最新回复
(
0
)