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【派】reference（n. 谈到；参照；附注；证明书；推荐人）
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impromptu［imˈprɔmptjuː］adj. / adv. 即席的（地），即兴的（地）
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【记】联想记忆：im（使） + prompt（即时的） + u→即时演说→即席的
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【例】When Morris is suddenly asked to speak impromptu, his nerves begin to flutter.
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acumen［əˈkjuːmen］n. 敏锐，聪明，洞察力
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【记】词根记忆：ac（尖，锐利） + u + men（名词后缀）→敏锐
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【例】The leader was respected by many people due to his political acumen.
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issue［ˈiʃjuː］n. 发行物，（报刊）期号；问题，议题，争论点；（水、血等）流出，放出；河口，出口 vt. （报刊等）发行，发布；排出，（使）流出；分配
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【例】①To sum up, in today’s lecture, we’ve looked at some of the issues in research paper writing, like the basic steps, types of research paper, and how to choose a topic. （2005听力）
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②A survey in America last month by Ernst & Young found that “although corporate America foresees a significant workforce shortage as boomers retire, it is not dealing with the issue.”（2009）
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mandate［ˈmændeit］n. 授权，命令；委托统治权 vt. 将（某地）委托某国管理；命令（某人）做某事
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【记】词根记忆：mand（命令） + ate→命令
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【例】①After protracted consideration the national government had decided to ask a mandate from the people.
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②The workers are mandated by the union to proceed with strike action.
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delicacy［ˈdelikəsi］n. 精致，优美，细微；美味，佳肴；微妙；棘手
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【记】词根记忆：de（表加强） + lic（引诱） + acy→非常诱人的东西→佳肴
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【例】①Jenny was nice from natural delicacy.
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②Jack still cannot understand the delicacy of the situation.
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range［reindʒ］n. 排，行，系列；射程，距离；山脉；范围，幅度 vi. 排列，安置；（在一定范围内）变化；漫游，徘徊；延伸
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【记】本身为词根：行，列
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【例】①We also use a broad range of art and photography, and the design has to work well with that, too. （1997）
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②Participants of the activity ranged from 20 years old to 60 years old.
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③We use gesture to indicate a wide range of meanings. （2010听力）
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【用】词组in / within range表示“在射程内”。
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sabotage［ˈsæbətɑːʒ］n. / vt. 阴谋破坏
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