448.kid(名)小孩(動)開玩笑
(名):I just have a kid and life is a nightmare.我只有一個小孩，生活便如同噩夢。
(動):I was only kidding.我不過是在開玩笑。

449.kill(動)殺死、使……死亡；消磨時間
He killed ten good years on that job.他在那件工作上浪費了整整十年的時間。

450.kilogram(名)公斤
簡稱kg.
The largest brain possessed by any dinosaurweighed about a kilogram.最大的恐龍大腦約有一公斤重。

451.kind(形)仁慈的、慈愛的(名)種類
(形):They are very kind to me. 他們對我很好。
(名):There are all kinds of animals in the zoo.動物園里有各種各樣的動物。

452.king(名)國王
He is a steel king.他是鋼鐵大王。

453.kiss(動)(名)親吻
(動)：They kissed and said goodbye.他們親吻道別。
(名):She gave her husband a kiss.她吻了她的丈夫一下。

454.kitchen(名)廚房
We usually eat in the kitchen.我們通常在廚房里吃飯。

455.kite(名)風箏；鳶
She had never learned to fly a kite.她一直沒有學會放風箏。

456.knee(名)膝蓋
She was on her knees weeding the garden.她跪在花園里除雜草。

457.knife(名)刀
復數(shù)knives
Put your knife and fork down on the plate if you've finished eating.如果你吃完了就把刀叉放在盤子上。

458.knock(動)擊、打
The falling bottle knocked him on the head.跌落的瓶子砸在他的頭上。

459.know(動)知道、曉得
不規(guī)則變化knew, known
There is one or two things I'd like to know about.有一兩件事我很想知道。

460.knowledge(名)理解；知識
不可數(shù)
My knowledge of Mr. Brown is not very great.我對布朗先生了解不深。

461.lake(名)湖
He has a villa by the lake.他在湖畔有一座別墅。

462.lamp(名)燈
On the street, lamps are fixed to lamp posts.在街上，燈是固定在街燈柱上的。

463.land(名)陸地(動)登陸、降落
(名):Most mammals live on land.大多數(shù)哺乳動物生活在陸地上。
(動):The pilot landed the helicopter in a rice field.飛行員將直升飛機降落在一片稻田里。

464.language(名)語言
Language is an instrument for communication.語言是溝通的工具。

465.large(形)大的、巨大的
I want a large box, this is too small.我要一個大盒子，這個太小了。

466.last(形)最后的(動)維持、持續(xù)
(形);He was the last person to leave.他是最后離去的人。
(動):How long will the meeting last?會議要開多久。

467.late(形)晚的、遲的
He was late for school.他上學遲到了。

468.later(形)隨后的、稍后的(副)較晚地；后來
(形):We will discuss this in detail in a later chapter.我們將在以后的章節(jié)中對這一點作詳細地探討。
(副):I went to bed later than usual.我比往常更晚睡覺。

469.laugh(動)笑、發(fā)笑
The jokes made everyone laugh.那些笑話使每個人都笑了起來。

470.lazy(形)懶惰的；無精打采的
His teacher thought he was lazy.他的老師認為他很懶惰。

471.lead(名)(動)領導、帶領
不規(guī)則變化led, led
(名):All the children followed his lead.所有的孩子都以他為榜樣。
(動):She led me into the living room.她帶我進入客廳。

472.leader(名)領導者、領袖
He is a decisive leader.他是一個有決斷力的領袖。

473.learn(動)學習、學會
My brother is learning English now.我的弟弟正在學英語。

474.least(形)最小的；最少的
He has least money in all of us.我們之中他的錢最少。

475.leave(動)離開
不規(guī)則變化left, left
Mr. Smith left the room at two o'clock.史密斯先生兩點離開房間。

476.left(形)左邊的
反義詞right
Some people write with their left hands.有些人用左手寫字。

477.leg(名)腿
I have a severe pain in my leg.我腿部劇烈疼痛。

478.lemon(名)檸檬；淡黃色
She drank a glass of lemon.她喝了一杯檸檬汁。

479.lend(動)借出
不規(guī)則變化lent, lent
Could you lend me your dictionary?你能把字典借給我嗎？

480.less(形)少量的、較少的
He has less strength than I.他力氣比我小。