首页
登录
职称英语
Elephants don’t forget—at least, female elephants don’t. Elephant families a
Elephants don’t forget—at least, female elephants don’t. Elephant families a
游客
2025-03-08
30
管理
问题
Elephants don’t forget—at least, female elephants don’t. Elephant families are matriarchal. And the social knowledge gained by the oldest females is the key to a family group’s survival, according to a study published in April by Karen McComb, a biologist at Sussex University in England.
Elephants announce their presence by making a deep, long sound, a practice referred to as contact calling(联络呼叫). An unfamiliar call may mean that an elephant from outside the family group is nearby. A stranger can cause trouble, interrupting feeding or disturbing the young. So an elephant
matriarch
signals the family to gather around her; then they all lift their trunks in the air to smell the unfamiliar caller. False alarms can disturb the group and take time and energy away from feeding, so survival may depend in part on getting it right.
Working with Cynthia Moss, who founded the Amboseli Elephant Research Project in Kenya 30 years ago, McComb tested the social knowledge of 21 Amboseli elephant families with matriarchs 27 to 67 years old. She played recordings of contact calls to each family and found that the oldest matriarchs were much better at picking out unfamiliar calls. In fact, a group with a matriarch in her fifties was several thousand times more likely to form into a group upon hearing an unfamiliar contact call than when hearing a familiar call. However, families with younger matriarchs were less than twice as likely to gather together upon hearing an unfamiliar contact call as compared with a familiar call. And they gathered together a lot. Moreover, the social knowledge of older matriarchs translated into favourable results: Families with older matriarchs produced more baby elephants in each female-reproductive year.
This finding shows how difficult it is to protect the oldest members of elephant families. As elephants age, they continue to grow larger, as do their much wanted tusks(象牙). So the older and wiser a matriarch is, the greater the chance she will be killed. About 800,000 elephants have been killed by people in the past 20 years. [br] What does the underlined word "matriarch" mean?
选项
A、An old member of an elephant family.
B、A female head of an elephant family.
C、A wise elephant.
D、A large elephant.
答案
B
解析
由第一段“Elephants don’t forget—at least,female elephants don’t.Elephantfamilies are matriarchal.”和画线词句“an elephant matriarch signals the faro—ily to gather around her”可推断出正确答案为B。
转载请注明原文地址:http://tihaiku.com/zcyy/3988468.html
相关试题推荐
据说有些单亲家庭的孩子生活很悲惨。Itissaidthatinsomesingle-parentfamilieschildrenlivea
Timwillnot(lent)youthebook(because)heisfearful(if)youwillforgetto
Malestudentsemitmoreheatthanfemalestudentsdo,andthelargerastudenti
Theevidenceforharmonymaynotbeobviousinsomefamilies.Butitseemst
Theevidenceforharmonymaynotbeobviousinsomefamilies.Butitseemst
Theevidenceforharmonymaynotbeobviousinsomefamilies.Butitseemst
Elephantsdon’tforget—atleast,femaleelephantsdon’t.Elephantfamiliesa
Elephantsdon’tforget—atleast,femaleelephantsdon’t.Elephantfamiliesa
Elephantsdon’tforget—atleast,femaleelephantsdon’t.Elephantfamiliesa
Elephantsdon’tforget—atleast,femaleelephantsdon’t.Elephantfamiliesa
随机试题
Whiteneighborhoodsarebecomingdarkerin【1】______andmoreexpensive.【1】__
Thesupplyanddemandofagriculturalproductsare______balanced.A、onpurpose
[originaltext]M:ThatisitIknowthatitissmallerthanyouwanted,butiti
安装在室外的地上、地下式消防水泵接合器,温度在()以下时应采取相适应的保温措施
一卡诺致冷机在工作时,低温热源温度为-10℃,高温热源温度为11℃。若在一次循环
A.攻下冷积,温补脾阳 B.润肠泄热,行气通便 C.温里散寒,通便止痛 D
能发生Vitali反应的药物是A.硫酸阿托品B.盐酸硫胺C.盐酸吗啡D.盐酸氯丙
(2019年真题)某图书馆是“L”型布置,防火墙设置在内转角,两侧墙上的窗口之间
雪口病的病因为( )。A.病因不清,多种因素作用 B.真菌感染 C.局部刺
发自髓室底至根分叉处的管道是A.管间吻合 B.根管侧支 C.根尖分歧 D.
最新回复
(
0
)