2016年12月英语六级听力答案：试卷一讲座3篇（有道考神版）
Section C Lecture16. They are necessary in our lives.
17. They feel too overwhelmed to deal with life's problem.
18. They expand our mind.
19. It came from a 3D printer.
20. When she was studying at a fashion design school.
21. It was hard and breakable.
22. It marks a breakthrough in printing material.
23. They arise from the advances in technology.
24. It is intensively competitive.
25. Sharing of costs with each other.
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