词汇是表达思想、交流意见的根本。在日常生活中，丰富的词汇量可以让我们更准确、更生动地表达想法，使沟通更加流畅和有效。在各类英语考试中，词汇不仅是必考内容之一，也是提高阅读理解、听力理解和写作能力的基石，丰富的词汇量可以让学生在考试中更有信心，更好地应对各种题型。

PART I 核心词汇
Unit 1
minute, occur, analysis…
Words in Context
Vocabulary in Focus
Exercises for Enhancement

Unit 2
prime, locate, propose…
Words in Context
Vocabulary in Focus
Exercises for Enhancement

Unit 3
select, violent, settle…
Words in Context
Vocabulary in Focus
Exercises for Enhancement

Unit 4
interpret, veteran, toss…
Words in Context
Vocabulary in Focus
Exercises for Enhancement
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