reveal 揭示，揭露 I promise never to ～ his secret

revenge 报仇，复仇Man may destroy the balance of nature ,but ,from time to time, nature takes a terrible ～

revise 修订，校订 ～ a dictionary

revive 苏醒，复苏 He is dead and never will ～

ridiculous 可笑的，荒唐的，荒谬的 In this department of English girls outnumber boys in a ～ ratio

rigid 刚性的，坚硬的 a ～ piece of plastic

ripe 成熟的，时机成熟的 a ～ cluster of grapes

roll 滚动，滚落 Rocks were ～ing down the hillside

rot 腐烂，腐坏，腐朽，腐败，腐化Meat may ～ if it is not refrigerated

roundabout 绕道的，绕圈子的，不直接的 The car has to take a ～ course to avoid the flood

rouse 惊起 The boat ～d wild ducks to flight

row 吵闹，争吵 What’s all this ～ about?

rub 擦，摩擦 He rubbed his eyes

rust 锈，铁锈 Iron gathers ～easily

ruthless 无情的，残忍的，冷酷的 a～ enemy

S

sack 麻袋，纸袋，塑料袋 a ～of cement

sacred 神圣的the ～ name of God

sacrifice 献祭，供奉 a law banning the ～ of animals

salute 敬礼，祝贺 ～ one’s superior officer

scan 细看，审视 ～ the doctor’s face for a sign of hope

scare 惊吓，恐惧 The thunder ～d the children

scatter 撒，撒播～ corn for the chickens

schedule 时间表，进度表 a fight ～

scheme 计划，方案 He suggested several ～s to increase sales

scold 责骂，训斥 Dad ～ed me for coming home late

score 得分，比分，分数，成绩 At the end of first half there’s no ～

scorn 轻蔑，鄙视 He ～s lying

scrap 碎片，零屑 ～s of bread

scrape 刮，擦 ～one’s chin

scratch 抓，刮，擦 The cat ～ed me with its claws

secure 安全的，可靠的，有把握的 a castle ～from attack

seek 寻找，探索 ～ shelter from the rain