474. hazard n. 危险
475. forge v. 伪造 ~ a famous painter’s signature 476. concession n. 让步 477. submerge v. 淹没 478. imperative a. 必要的 479. elapse v. 逝去 480. confine v. 限制
481. thrive v. 繁荣=prosper 482. resort to v. 诉诸于
483. sustain v. 维持=support
484. highlight v. 使突出 n. 最精彩的部分 485.massive a.大量的; 大而重 486. mask v. 掩饰 487. restore v. 恢复 488. restraint n. 约束 489. scope n. 范围
490. seemingly ad. 表面上 491. speculate v. 猜测 492. steep a. 陡的
493. summon v. 唤起 How can I ~ up his courage? 494. shift v. 移动；转变 ~ responsibility on to others 495. transient a. 短暂的 496. prompt a. 迅速的 497. impart v. 传授 498. embody v. 体现 499. confront v. 面对 500. triumph n. 胜利