首页
登录
职称英语
[originaltext] Today, we are going to continue our discussion of social inse
[originaltext] Today, we are going to continue our discussion of social inse
游客
2024-04-02
22
管理
问题
Today, we are going to continue our discussion of social insects, focusing on the Argentineant, 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 be descended 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://tihaiku.com/zcyy/3537412.html
相关试题推荐
[originaltext]Today,wearegoingtocontinueourdiscussionofsocialinse
[originaltext]Someofthemostpracticallessonscomingoutofresearchin
[originaltext]Someofthemostpracticallessonscomingoutofresearchin
[originaltext]WeonlyhaveafewminutesleftsoI’dliketogooveracoup
[originaltext]TheEducationSelectCommitteehasbeenexaminingtheunderach
[originaltext]TheEducationSelectCommitteehasbeenexaminingtheunderach
[originaltext]TheeconomiccrisisinEuropeandNorthAmericaledtomoreth
[originaltext]W:Hi,Gary!Isthisseattaken?M:No,itisn’t.Pleasegoright
[originaltext]W:Hi,Gary!Isthisseattaken?M:No,itisn’t.Pleasegoright
[originaltext]W:Hi,Gary!Isthisseattaken?M:No,itisn’t.Pleasegoright
随机试题
Health&FitnessCentre1.LocationLocatedatthe
LivingwithParentsorNot?Forthispart,youareallowed30minutestowri
Thewaythatpeoplespendtheirmoney,andtheobjectsonwhichtheyspend
某大型保险公司对符合一定安全标准的车辆提供汽车保险折扣。以下哪项审计测试能为内部
水利建筑工程工程量清单项目包括( )。A.土方开挖工程 B.土石方填筑工程
A.生后感染性肺炎 B.宫内感染性肺炎 C.新生儿肺透明膜病 D.胎粪吸入
A.葛根芩连汤 B.藿香正气散 C.芍药汤 D.柴胡疏肝散 E.痛泻要方
治疗热淋,小便淋沥涩痛,兼见心烦尿赤,口舌生疮,宜选用的药物是A.茵陈 B.
为提供城市发展的良好环境,保障城市安全,城市综合防灾减灾规划应遵循的原则包括(
《刑法》第175条规定:“以转贷牟利为目的,套取金融机构信贷资金高利转贷他人,违
最新回复
(
0
)