2.5.1测角网。细实线,纵向大,说明角度主要控制横向

1.2.1铅垂线与大地水准面引力

Unit 1 Ways of Learning Unit 2 Values Unit 3 The Generation Gap Unit 4 The Virtual World Unit 5 Overcoming Obstacles

Unit 1 Writing For Myself Unit 2 Friendship Unit 3 Understanding Science Unit 4 American Dream Unit 5 Romance

Part 1 ObjectivesPart Part 2 Background Part 3 Ddiscussion Part 4 Language Points Part Ccontent Questions Part 6 Translation

北京化工大学：《大学化学实验》课程教学资源（学习资源）人文化学——主题3：大自然中缤纷美丽的物质

Part 1 Objectives Part 2 Discussion Part 3 Background Part 4 Structure Study Part 5 Language points Part 6 Content Questions

Text A Tony Trivisonno's American Dream Part 1 Obiectives Part Discussion Questions Part3 Background Part 4 Text Structure Part Lanquage Points

Text A Public Attitudes toward Science Part 1 Objectives Part 2 Cultural Notes Part 3 Text Structure Part 4 Language Points Part 5 Content Questions

4.3化学电源