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1.simulate v.模仿，假装(to imitate)
词根记忆：simul(类似)+ate--使某物类似于某物模仿
例：Don't simulate the way l speak.//simulate death装死
派生词：simulation(n.假装：模仿)；simulator(n.模拟装置：假装者)
2.simultaneous a．同时的，同步的(existing or occurring at the same time)
词根记忆：simult(相同)+aneous(…的)--时间相同的--同时的
例：The survey explained the simultaneous increase in tobacco sales and decrease in the number of adults who smoke.
派生词：simultaneously( ad.同时地)
3.sinew n．腱(tough cord of tissue joining a muscle to a bone)；肌肉(muscle)
例：The weightlifter's muscles and sinews were well defined.
4.single-entry a.单式的；单式记录的
例：single-entry ticket单式门票（即被一次检票后立即失效）
5.singularly ad.异常地(strangely)；特别地(exceptionally)
例：singularly wet weather异常多雨的天气
6.sinus n．穴：【解】窦（主要容纳静脉血的膨胀的通道或空腔）(cavity, hollow)
例：venous sinus静脉窦
派生词：sinusitis(n.窦炎)
7.sip v.啜饮，呷(to drink in small quantities)
联想记忆：高档酒店喝一小口(sip)酒也得给小费(tip)
例：Anne sipped at the coffee because it was hot.
8.skeleton n．骨架，骨骼(framework of bones supporting an animal or a human body)
发音记忆：“skin里头”--皮肤里头是骨骼
例：The structure of the skeleton of the creature resembled that of a reptile.
9.skeptic n.怀疑者(an adherent or advocate of skepticism)
联想记忆：s+kept(保留)+ic--持保留态度的人--怀疑者
例：The skeptic dismissed the president's plan as unworkable.
派生词：skeptical(a．怀疑的)：skepticism(n.怀疑态度;怀疑论)
n. 怀疑论，怀疑态度，怀疑主义
