until very recently it was possible to use only natural materials of various kinds for the making of clothing. both plants and animals supply these natural materials.
from plants we get cotton and linen. from animals we get such materials as wool, silk, leather, and furs. modern man now has cloth which is made synthetically. in 1884 the first artificial fiber was made, called artificial silk, rayon, nylon and dacron are best-known products developed later.
2015英语六级词汇攻略《黑宝典》系列十二
英语六级高频词汇汇总之(7)
六级高频词汇汇总(33)
解析六级大纲核心难词(MNO)
六级高频词汇汇总(25)
六级高频词汇汇总(24)
英语六级高频词汇汇总之(1)
六级高频词汇汇总(45)
2015英语六级词汇攻略《黑宝典》系列四
英语六级高频词汇汇总之(14)
2015英语六级词汇攻略《黑宝典》系列五
六级高频词汇汇总(32)
2015英语六级翻译指导及练习(5)
2015六级高频词汇汇总(4.4)
2015英语六级翻译指导及练习(19)
英语六级高频词汇汇总之(2)
英语六级高频词汇汇总之(17)
六级高频词汇汇总(61)
英语六级高频词汇汇总之(20)
2015英语六级考试翻译冲刺模拟训练(12)
六级高频词汇汇总(51)
六级高频词汇汇总(53)
英语六级词汇攻略黑宝典系列一
2015英语六级词汇攻略《黑宝典》系列九
2015英语六级考试翻译冲刺模拟训练(3)
六级高频词汇汇总(35)
解析六级大纲核心难词(G)
2015六级高频词汇汇总(3.4)
英语六级高频词汇汇总之(15)
2015英语六级考试翻译冲刺模拟训练(1)
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |