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
40
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
Itseemstomethatneighborsaregoing【B1】______inAmerica.Thefriendnextdoorfromwhomyouborrowedfoureggsoraladderh
A、Arrogant.B、Weird.C、Genuine.D、Outgoing.B根据男士的描述,那个男子总是盯着他,当他转身的时候,那个人已经悄然无声地站在了他身旁,可以推断出那个人行为古怪。故答案是B。选项是四个形容词,猜测题目与某人的性格有关
DoctorsinBritainarewarningofanobesity(肥胖症)timebomb,whenchildrenwhoarealreadyoverweightgrowup.So,whatshouldwe
Sometwentyyearsago,theperformanceofgirlsandboysinclasswascompared.Boys【B1】______betterinexams,sovariousmeasur
ItisnoteasytotalkabouttheroleofthemassmediainthisoverwhelminglysignificantphaseinEuropeanhistory.Historyan
A、BecauseChinesesuccessfullyintegratedintoAmerican.B、BecauseChopSueywasintroducedintoAmerican.C、BecauseChinesefoo
A、Inanoffice.B、Inarestaurant.C、Inadepartmentstore.D、Inafactory.D男士问:“谁将糖果装入盒子里?”,女士话中的“自动计数”,“机器”以及“我马上带你去看”,表明对话发生
Oneofthebiggestchallengesfacingemployersandeducatorstodayistherapidadvanceofglobalization.Themarketplaceisno
A、TheJapanesemathematicteachers.B、BoththespeakerandhisGermanfriend.C、BothAmericansandimmigrants.D、Thesonofthe
随机试题
在下列作品中,属于五言律诗的是()
A.V1-5ST段抬高,异常Q波形成B.Ⅱ、Ⅲ、aVFST段抬高,异常Q波形成C.v5~7、Ⅱ、Ⅲ、aVFST段抬高,异常Q波形成D.I、aVLST段抬高,异常Q波形成E.Ⅱ、Ⅲ、aVF、V3R~V6RST段抬高,异常Q波形
患者肢体关节酸痛、重着,手足沉重,活动不利,所属病症为()。
目前所使用的定性分析方法中,使用最为广泛的系统是()。
如果固定资产清理科目出现借方余额,应在资产负债表“固定资产清理”项目中以负数填列。()
签发人应标注在文件的()。
下面对类-对象主要特征描述正确的是
存储400个24×24点阵汉字字形所需的存储容量是
Themanageraskedyouto______foryourabsence.
PresidentBarackObama’spicktoheadtheEnvironmentalProtectionAgency(EPA),LisaJackson,hasspent20yearsasanenvironm
最新回复
(
0
)