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.
2017届高考北师大版英语二轮复习单元限时规范练:必修5 Unit 15《learning》(含解析)
【师说】2017届高考英语二轮复习天天增分训练:24(含解析)
2017届江苏省南通市高考英语完形和阅读一轮综合练习:5(含解析)
【师说】2017届高考英语二轮复习天天增分训练:32(含解析)
2017届高考北师大版英语二轮复习模拟演练:4 动词时态和语态(含解析)
【师说】2017届高考英语二轮复习天天增分训练:23(含解析)
2017届高考北师大版英语二轮复习单元限时规范练:必修4 Unit 11《the media》(含解析)
2017届高考北师大版英语二轮复习单元限时规范练:选修6 Unit 18《beauty》(含解析)
【师说】2017届高考英语二轮复习天天增分训练:22(含解析)
【师说】2017届高考英语二轮复习天天增分训练:31(含解析)
2017届江苏省南通市高考英语完形和阅读一轮综合练习:3(含解析)
2017届高考北师大版英语二轮复习单元限时规范练:必修2 Unit 6《design》(含解析)
2017届高考北师大版英语二轮复习单元限时规范练:必修5 Unit 13《people》(含解析)
【加练半小时】2017届高考英语一轮复习训练:第15练(含解析)
【师说】2017届高考英语二轮复习天天增分训练:30(含解析)
【师说】2017届高考英语二轮复习天天增分训练:19(含解析)
2017届江苏省南通市高考英语完形和阅读一轮综合练习:2(含解析)
【师说】2017届高考英语二轮复习天天增分训练:29(含解析)
【师说】2017届高考英语二轮复习天天增分训练:25(含解析)
2017届高考北师大版英语二轮复习单元限时规范练:选修7 Unit 19《language》(含解析)
2017届高考北师大版英语二轮复习单元限时规范练:必修3 Unit 7《the sea》(含解析)
2017届高考北师大版英语二轮复习单元限时规范练:必修5 Unit 14《careers》(含解析)
2017届高考北师大版英语二轮复习单元限时规范练:选修6 Unit 16《stories》(含解析)
【师说】2017届高考英语二轮复习天天增分训练:17(含解析)
2017届高考北师大版英语二轮复习单元限时规范练:必修2 Unit 5《rhythm》(含解析)
2017届高考北师大版英语二轮复习单元限时规范练:选修7 Unit 21《human biology》(含解析)
2017届江苏省南通市高考英语完形和阅读一轮综合练习:6(含解析)
2017届高考北师大版英语二轮复习单元限时规范练:必修1 Unit 1《lifestyles》(含解析)
2017届高考北师大版英语二轮复习模拟演练:6 并列句和状语从句(含解析)
【师说】2017届高考英语二轮复习天天增分训练:18(含解析)