04 3
文本
████ 重点词汇
████ 难点词汇
████ 词组 & 惯用语
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[本次分析采用基础词汇量：
This impressive display is used
to warn away other males...
...and to win a mate
seals also breed on pack ice
Their for only four days
- the shortest nursing period
known for any
- and all because the
threat of
caused them
on the ice
Another opts
for the solid ice further north
Because it's easy for
bears to hunt here,
these seals must be particularly
and have to hide their
seals are small,
so they can give birth
to their in little caves,
or , under the snow
Here, a is out of sight
and protected from bad weather
late March and into April,
female bears emerge from winter
with their new
The mother has not eaten for at least
five months and she's hungry - very hungry
she doesn't succeed in catching
a regular supply of seals,
her milk will fail and
her will die
Bears have an
sensitive sense of smell
and can detect seal hidden in
the snow from two kilometres away
But a female seal
uses several
and a bear will almost certainly
have to break into a number
before it finds one
that is occupied
This is a crucial time
for the
By watching its mother hunt
and by copying her actions,
it's beginning to acquire the
of its own hunting skills
Play is also important for developing
muscles and improving co-ordination
As the days go by,
the sun rises higher
and remains above the
horizon even at night
The female bear continues to hunt
until her is too tired
and can't keep up
She has smelt something
The escapes through a hole in
its that leads to the sea below
Only one in twenty hunts
is successful
But this mother must find a seal soon
if her is not to
As spring turns into summer, the sun's
heat begins the sea ice
Now the ocean is accessible and
the Arctic's summer visitors return
birds arrive
from the south
知识点
重点词汇
comparatively [kəmˈpærətɪvli] adv. 比较地；相当地 {cet4 toefl :5019}
hooded [ˈhʊdɪd] adj. 有罩盖的，戴头巾的 { :5182}
mammal [ˈmæml] n. [脊椎] 哺乳动物 {cet6 ky toefl ielts gre :5214}
arctic ['ɑ:ktɪk] n. 北极圈；御寒防水套鞋 n. (Arctic)人名；(英)阿克蒂克 adj. 北极的；极寒的 {gk cet6 toefl ielts gre :6116}
dens [denz] n. 兽窝，兽穴（den的复数）；牙齿；齿状部分 v. 把（野兽）驱赶进兽穴（den的第三人称单数） n. (Dens)人名；(葡)登斯 { :6303}
migrating ['maɪɡreɪtɪŋ] v. 迁移；迁徙；移居（migrate的ing形式） { :6504}
polar [ˈpəʊlə(r)] n. 极面；极线 adj. 极地的；两极的；正好相反的 n. (Polar)人名；(德、西)波拉尔 {cet6 ky toefl ielts gre :6795}
unstable [ʌnˈsteɪbl] adj. 不稳定的；动荡的；易变的 {cet4 cet6 toefl :6975}
extraordinarily [ɪk'strɔ:dnrəlɪ] adv. 非常；格外地；非凡地 {cet6 :7314}
starve [stɑ:v] vi. 饿死；挨饿；渴望 vt. 使饿死；使挨饿 {gk cet4 cet6 ky toefl ielts :7450}
nasal [ˈneɪzl] adj. 鼻的；鼻音的 n. 鼻骨；鼻音；鼻音字 {gre :7721}
pup [pʌp] n. 小狗；幼畜 vt. 生（小狗等小动物） vi. 生小狗 { :9257}
pups [pʌps] abbr. puppies 小狗，幼犬，自负的青年 n. 小狗( pup的名词复数 ); 自负的傻小子; （小狐，小海豹等）幼小的动物; 卖给/买到伪劣货 { :9257}
cubs ['kʌbz] n. 幼仔；幼童军；没经验的年轻人 vi. 生幼仔 { :10029}
cub [kʌb] n. 幼兽；不懂规矩的年轻人 vi. 生育幼兽 {gre :10029}
vigilant [ˈvɪdʒɪlənt] adj. 警惕的；警醒的；注意的；警戒的 {toefl ielts gre :11523}
难点词汇
ringed [rɪŋd] adj. 环状的；戴戒指的；有环的；被包围的 v. 围绕；圈出（ring的过去分词） { :15631}
lair [leə(r)] n. （野兽的）[动] 巢穴；躲藏处 vi. 进入兽穴；在穴中休息 vt. 使陷入泥潭；放于穴中 n. (Lair)人名；(英、法)莱尔 {gre :17399}
lairs [leəz] n. （野兽的）巢穴，窝( lair的名词复数 ); （人的）藏身处 { :17399}
suckle [ˈsʌkl] vt. 给…哺乳；吮吸；养育 vi. 吃奶 { :21460}
rudiments [ˈru:dɪmənts] n. 入门；初步；基础知识 { :21597}
ln [ ] abbr. 自然对数（Napierian Logarithm）；液态氮（Liquid Nitrogen） { :28828}
LF [ ] [计] 换行, 低频 [医] 絮凝单位, 絮凝限度 { :30107}
复习词汇
seals [si:lz] n. seal的复数形式 { :4021}
seal [si:l] n. 密封；印章；海豹；封条；标志 vt. 密封；盖章 vi. 猎海豹 n. (Seal)人名；(英)西尔 {gk cet4 cet6 ky toefl ielts :4021}
词组
Arctic seal [ ] 兔毛皮[亦作 arctic seal]
hooded seal [ ] [动物]冠海豹 (Cystophora cristata)[亦称作bladdernose]
opt for [ ] na. 选取；赞成 [网络] 选择；就是选择；选择了
polar bear [ˈpəulə bɛə] n. 北极熊；白熊 [网络] 冬泳者；极地熊；北极熊篇
polar bears [ ] na. 北极熊 [网络] 北极熊的采血点；爱上北极熊；梁伟灏
ringed seal [ ] un. 环斑海豹 [网络] 环海豹；抓环斑海豹；海狗鞭环斑海豹
starve to death [ ] [网络] 饿死；快要饿死了；每年世界上会有许多人饿死
to breed [ ] 配种
to melt [ ] [网络] 融化；溶化；熔化
to nest [ ] [网络] 营巢；为…筑巢
to starve [ ] [网络] 饥饿；缺乏
单词释义末尾数字为词频顺序
zk/中考 gk/中考 ky/考研 cet4/四级 cet6/六级 ielts/雅思 toefl/托福 gre/GRE
* 词汇量测试建议用 testyourvocab.com