2600.reward(名)報酬
Desert and reward seldom keep company.
賞罰不明乃司空見慣之事。

2601.rice(名)稻米、米飯
不可數(shù)
The rice has burnt.
飯燒焦了。

2602.rich(形)有錢的；豐富的
同義詞pursy
My neighbor is rich businessman．
我的鄰居是個很有錢的商人。

2603.riches(名)財富、財產(chǎn)
慣用復(fù)數(shù)
She gave away all her riches．
她放棄了所有的財產(chǎn)。

2604.ride(動)騎乘；(名)騎
不規(guī)作變化rode，ridden
(動):They rode in the back seat of the bus.
他們坐在公共汽車后面的座位上。
(名):I will give you a ride to school.我將載你去學校。

2605.rider(名)騎士
The horse bucked the rider off.
馬躍起將騎士摔于馬下。

2606.right(形)對的、正確的(名)杈利；正確
反義詞wrong
(形):John was right in his answer.
約翰答對了。
(名):we have right to be free.
我們有自由的權(quán)利。

2607.ring(動)圍住；回響(名)戒指、圈
不規(guī)則變化rang，rung
(動):My father's last words are still ringing in my ears.
我父親的臨終遺言還在我耳邊回響。
(名)Is that your ring?
那是你的戒指嗎？

2608.river(名)河流
The longest river in Africa is the Nile．
非洲最長的河流是尼羅河。

2609.roach(名)蟑螂
同義詞cockroach
The girl was much frightened by a roach.
這女孩被一只蟑螂嚇到了。

2610.road(名)道路
This is a road to success．
這是一條成功之路。

2611.robber(名)強盜
The robber broke open his house．
強盜砸開了他家的大門闖了進去。

2612.robberly(名)搶劫案
The news of the robbery of the bank was quickly bandied about.
銀行遭到搶劫的消息很快傳開了。

2613.robot(名)機器人
The current study is about space robot.
目前正在進行的研究工作是航空機器人。

2614.rock(名)巖石
Mountains are made of rock．
山是由巖石構(gòu)成的。

2615.rocket(名)火箭
The planned to send a rocket to the moon.
他們計劃向月球發(fā)射火箭。

2616.role(名)角色；任務(wù)
Robert denied any role in the robbery.
羅伯特否認曾經(jīng)參與過這起搶劫案。

2617.roll(動)滾；搖晃
He rolled himself from side to side.
他左右搖晃。

2618.Roman(形)羅馬的
R需大寫
Roman culture was enduringly fertilized.
羅馬文化不斷地得到充實。

2619.room (名)房間、室
Come and see me in my room this evening.
今天晚上請到我家來看我。

2620.root(名)根；根源；祖先
These plants have very deep roots.
這些植物的根長得很深。

2621.rose(名)玫瑰
They engrafted a new rose onto a wild rose.
他們把一枝新品種玫瑰嫁接在野生玫瑰上。

2622.round(形)圓形的；大約的(名)一輪：回圈；巡回
(形):It'll cost somewhere round $50.
這大概要花50美元左右。
(名):The doctor is on his round of visits．
醫(yī)生在巡回出診。

2623.route(名)路線
We drove home by a round about route.
我們開車繞道回家。

2624.royal(形)皇家的、王室的
The royal family consists of the king and queen and their relations.
皇室是由國王、王后以及他們的親屬組成。

2625.royalty(名)王權(quán)：皇室成員
A crown worn as a sign of royalty.
王冠做為王權(quán)的象征。

2526.rubber(名)橡膠
This cable has a rubber casing.
這根電纜線外包有一層橡膠。

2627.rule(名)規(guī)則
He does everything by rules.
他事事墨守成規(guī)。

2628.ruler(名)統(tǒng)治者
The new nation needs modern-minded ruler．
這個新興的國家需要具有現(xiàn)代思想的統(tǒng)治者。

2629.ruling(形)統(tǒng)治的
At this point,the ruling classes were willing to compromise.
在這個時候，統(tǒng)治階層愿意妥協(xié)了。

2630.run(動)跑；行駛；繼續(xù)
不規(guī)則變化ran，run
Are you running in the 100 meters?
你參加百米賽跑嗎？

2631.runner(名)奔跑者、奔跑的人
The runner collapsed because of exhaustion.
那個奔跑者因為極度疲勞倒下了。

2632.sad(形)悲傷的、難過的
She's sad bacause her son is ill．
她因兒子生病而難過。

2633.safe(形)安全的；可靠的
反義詞dengerous
A safe stateman is better than a clever one.
一個可靠的政治家比一個聰明的政治家更好。