418. justify v. 使…有正当理由
Nothing can justify your cheating on an exam.任何事情都不能成为你考试作弊的理由。 419. imperative a. 必要的
It's imperative that you apologize to him immediately.你必须立即向他道歉。 420. motivate v. 激励；促进；激发；
名词形式motivation。
A desire to pass Band 6 motivates her to work hard.通过六级的欲望刺激着她努力学习。 421. multiply v. 繁殖 multiply 除了表示繁殖，也可表示做乘法，如 multiply A by B，或者multiply A and B (together),表示A和 B相乘。而做除法则为divide，加为plus 或add，减法为subtract或minus。与这个词拼写差不多的词是multiple，multiple既可作形容词，也可作名词。作形容词时表示多项的，多类型的；作名词时表示倍数，而multiple store则指连锁商店。 Fish multiply rapidly.鱼繁殖很快。 422. maintenance n. 保养
maintenance是动词maintain的名词形式。它表示维持、保持，也可表示赡养费、抚养费。 price maintenance 保持价格不变 maintenance man 维修工人
It is important to have some skin maintenance at certain ages.到了特定年纪，一些皮肤保养是很有必要的。
423. massive a. 大量的; 大而重的
a massive increase 大规模增长 a massive crowd 大批群众 The 9·11 tenth annversary has been a subject of massive media coverage. 911十周年纪念已经被媒体广泛报道。
424. mask v. 掩饰；面具；
gas mask 防毒面具
Her smile masked her true feeling.她的微笑掩饰了自己的真实感受。 425. overall a. 总体的
an overall impression 总体印象Overall, the picture is well conceived except for the light.总体来说，除了光线问题，整张图片构思不错。 426. perceive v. 感知；注意到；观察到；
perceive sth. as sth. 理解或领悟某事物；认为
I perceived that his emotion is instable these days.我注意到她这几天情绪不太稳定。 427. prevail over v . 胜过；盛行；流行；普遍存在
prevail among /in sb. /sth. 普遍存在；十分流行 prevail against /over sb. /sth. 战胜/击败某人或某物
Tennis prevails in this country.这个国家十分盛行网球运动。 428. prime n. 壮年；全盛时期；
prime还可表示首要的；典型的 prime minister 首相 He died in the prime of his life.他在壮年时便去世了。 429. priority n. 优先权
give priority to 给??优先权 top priority 最应优先考虑的事
As the reform goes on, the government gives priority to economy developme。随着改革的深入，政府将经济发展作为第一要务。
430. prominent a. 突出的, 杰出的=distinguished
He is a prominent teacher in this school.他是这所学校里表现突出的老师。 431. prone to a. 易于
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除了prone，还可表示“倾向??”“易于??”的词还有 apt、likely 等。prone 多指人，着重指其本性，或倾向于某种错误、弱点或不良行为。likely 侧重可能性，用于指将来，预言好的或者不好的结果。apt 多用于口语，指自然或习惯性的倾向。
The kid is prone to crying.那个小孩很容易哭。 432. prosperity n. 繁荣
borrowed prosperity 虚假繁荣 business prosperity 商业繁荣 形容词形式 prosperous。
It seems that the new government isn't able to bring along a period of prosperity.新政府似乎没
能给经济带来繁荣。
433. preach v. 说教；讲道；布道，
preach to sb. about /against /on sth. （在教堂中）讲经，布道 preach sth. to sb. ①宣扬（教义或教条）；②教导某事物；③唠叨的说教
His father often goes to church to preach to people on Sundays.他的父亲经常周末去教堂布道。 She hates her mother preaches to her all the day.她讨厌她妈妈整天唠唠叨叨。 434. punctual a. 守时的
He is a punctual man.他是个守时的人。 435. propel v. 推动
propel 表示驱动，推动；促使，而push则是普通用词，使用比较广泛。 He used a paddle to go forward.他划桨推动小船前进。 436. pledge n. 保证；抵押品；典当物；
I believed her pledge that she will never reveal this secret. 我相信了她绝不说出这个秘密的保证。
437. promising a. 有希望的；有前途的；有出息的；
He is supposed to be a promising violinist.大家都认为他会成为一个有前途的小提琴家。 438. publicity n. 公众的注意
publicity agent 宣传员 give publicity to 公布，宣布
Her screaming arouse the publicity.她的尖叫引起了公众的注意。 439. prompt a. 迅速的
除了作形容词使用，prompt还可作动词，表示激起；推动；提示，也可作名词表示提示；提示的内容。
Do you know what prompts him to be so nervous?你知道什么导致他如此紧张吗？ 440. initiate v. 创始
The company initiated a management training program for small businesses.该公司创始了针对小企业的管理培训方案。
441. identify…with v. 使等同
I identified with the heroine of the novel.我与小说中的那个女主人公感同身受。 442. impart v. 传授
A teacher's aim is to impart knowledge.教师的作用是传授知识。 443. liable to a. 易于= be apt to/be prone to
We are liable to make mistakes.我们都易犯错误。 444. liberal a. 自由的
Her parents are very liberal and allow her a lot of freedom.她的父母很开明，让她享有许多的自由。
445. linger v. 继续逗留；留恋；
They lingered in the beautiful town.他们在这美丽的小镇逗留。
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446. launch v. 发起
We were going to launch a counterattack.我们准备发起反攻。 447. label n. 标签
I read the information on the label before deciding which jam to buy.我先看果酱标签上的说明再决定买哪种.
448. mature a. 成熟的
This is the most mature of his plays.这是他最成熟的一部剧作。 449. moderate a. 适度的
moderate physical exercises 适度的身体锻炼
Moderate exercise will be of benefit to you.适度运动对你有益。 450. reckless a. 鲁莽的
He apologized for their reckless behavior.他对他们的鲁莽行为道了歉。 451. relevant a. 有关的
A paper relevant to this research was published by him.与本研究相关的一篇论文是他发表的。 452. remedy n. 治疗法
Warmth is the best remedy for colds.热疗是治感冒的最好方法。 453. resistant a. 抵抗的
A healthy diet creates a body resistant to disease.保健饮食有助于增强体内对疾病的抵抗力。 454. respective a. 分别的
He drove them both to their respective homes.他驾车把他们分别送到家里。 455. resume v. 重新开始
We resumed our work after a rest.休息之后我们重新开始工作。 456. restore v. 恢复
Drastic measures will have to be taken to restore order.为恢复秩序必须采取严厉措施。 457. restraint n. 约束
There is still need for profit restraint.现在仍有必要限制利润。 458. rival n. 对手=opponent
The party leader has been supplanted by his rival.那位政党领导已被他的对手取而代之了。 459 resort to v. 诉诸于
In recent years, some groups have resorted to threats and evenefforts to disrupt important research.近年来，一些团体为了达到破坏重要研究的目的而诉诸于威胁甚至暴力。 460. successor n. 继任者
I am sure that he is a reliable successor.我确信他是个可靠的接班人。 461. scandal n. 丑闻
The scandal caused tempests in the newspaper.那件丑闻在报纸上引起阵阵风波。 462. scatter v. .驱散
The police scattered the crowd.警察驱散了人群。 463. sentiment n. 感情
He could feel the sentiment stirring within him.他可以感觉到这种情绪在心中波动。 464. severe a. 严重的
severe wound 重伤
The premier came under severe criticism.这位总理遭到严厉的抨击。 465. shield v. 保护
She held her hand above her eyes to shield them from the sun.她举起手遮挡阳光以保护眼睛。 466. simultaneously a. 同时地
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The event will be telecast simultaneously to nearly 150 cities.这一盛事将向近 150 个城市同时进行电视广播。
467. sole a. 唯一的
He has the sole agency for Ford car.他有福特汽车的独家代理权。 468. sponsor n. 赞助者
A wealthy sponsor came to our rescue with a generous donation. 有个富有的赞助人慷慨捐赠来解救我们。
469. startle v. 惊吓
He startled from sleep.他从睡梦中惊醒起来。 470. stray v. 走失
Pound the cows so they don't stray.把这些走失的牛关进待领场，这样它们就不会乱跑了。 471. substantial a. 可观的，大量的=considerable
a substantial income 一大笔收入
Substantial profits accrue when sales take off.当销售额突飞猛进之后，可观的利润就开始自然累积。
472. sufficient a. 充分的
We must work hard, but equally we must get sufficient rest.我们必须努力工作,但同时也要有充分的休息。
473. supplement v./n. 补充
He supplemented his income by taking apart-time job.他靠兼职来增加收入。 474. swing v. 摇摆
The children were swinging on a rope.孩子们抓着绳子荡来荡去。 475. scope n. 范围
This subject is outside the scope of our inquiry.这个问题不在我们探讨的范围之内。 476. seemingly ad. 表面上
Any seemingly viable proposition will be tested by market research. 任何表面上可行的建议都要通过市场研究予以检验。 477. speculate v. 猜测
The doctors speculate that he died of cancer.医生推测他死于癌症。 478. steep a. 陡的
This hill is too steep to ride up on a bicycle.这山太陡了，骑自行车可上不去。 479. summon v. 唤起
How can I summon up his courage?如何唤起他的勇气？ 480. shift v. 移动；转变；
shift responsibility on to others 转嫁责任
The Left is shifting their ground.左派正在改变立场。 481. strive v. 力求
strive for freedom 力求自由
The scientists strive for a breakthrough in cancer research.科学家们力争在癌症研究方面有个突破。
482. submit to v. 屈服=yield to
I submit to his wishes.我顺从他的意愿。 483. striking a. 显著的
Her big eyes are her most striking feature.大眼睛是她容貌最显著的特点。 484. scrape v. 刮,擦
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He bent over to scrape some dirt off his shoes.他弯腰刮掉鞋子上的尘土。 485. sensible a. 合情理的
That sounds very sensible to me.我觉得这很合理。 486. submerge v. 淹没
I watched the submarine submerge.我望着潜艇潜入水中。 487. stereotype n. 陈规，固定的看法，
The idea is an old-fashioned stereotype.这观点是老一套了。 488. sustain v. 维持=support
They had sufficient food to sustain life.他们有足够维持生命的食物。 489. testify v. 作证
He testified that he had not seen the accident.他作证说他没有看见那次事故。 490. trigger v. 引发
trigger a debate/war 引发战争
The odour of food may trigger people's appetite.食物的香味能引起人的食欲。 491. triumph n. 胜利
The winning team returned home in triumph.球队凯旋而归。 492. transient a. 短暂的
Their happiness was transient,for the war broke out soon after they got married.他们的幸福是短暂的，因为他们婚后不久就爆发了战争。 493. thrive v. 繁荣=prosper
A business cannot thrive without good management.没有良好的经营管理，事业就不会兴旺发达。 494. universal a. 普遍的
These phenomena is very universal.这些现象己经非常普遍了。 495. utilize v. 利用
How can we utilize his knowledge and skill to our advantage?我们如何来利用他的知识和技术才对我们有利？
496. variation n. 变动
the variation in temperature 温度变化
Prices are subject to variation.价格可以变动。 497. virtually ad. 实际上
It is virtually impossible to predict the future accurately.精确预言未来的事实际上是办不到的。 498. wretched a. 难过的
She lamented to us about her wretched lot.她向我们哀叹自己悲惨的遭遇。 499. yield v.结出
The village abounds in fields that yield many bushels of corn.那个村庄到处都是盛产玉米的农田。
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