选修3
Unit7-Topic Talk
Unit7-Lesson 1
Unit7-Lesson 2
Unit7-Lesson 3
Unit7-Writing Workshop
Unit7-Reading Club 1
Unit7-Reading Club 2
Unit8-Topic Talk
Unit8-Lesson 1
Unit8-Lesson 2
Unit8-Lesson 3
Unit8-Writing Workshop
Unit8-Reading Club 1
Unit8-Reading Club 2
Unit9-Topic Talk
Unit9-Lesson 1
Unit9-Lesson 2
Unit9-Lesson 3
Unit9-Writing Workshop
Unit9-Reading Club 1
Unit9-Reading Club 2
symbolically
adv.象征地；象征性地
phenomenon
n.现象
mineral
n.矿物质；矿产
needle
n.针