____is the solid evidence of the advanced civilization on the earth.
A、 Electricity
B、The steam engine
C、The virtual world
D、 New kinds of transportation
大学英语综合教程一二

章节列表

Growing up Online Quiz (在线测试)10Understanding Science Online Quiz(在线测试）4Understanding Science Online Quiz（在线测试）10The American Dream Online Quiz (在线测试)10The American Dream 单元测试10Romance Online Quiz (在线测试)10Animal Intelligence Online Quiz(在线测试)6Animal Intelligence Online Quiz（在线测试）8Unit 1 Ways of Learning Reading Skill2Unit 1 Ways of Learning Writing Skill2Unit 1 Ways of Learning Quiz10Unit 2 Values Reading Skill2Unit 2 Values Writing Skill2Unit 2 Values Quiz10Unit 4 The Virtual World Reading Skill2Unit 4 The Virtual World Writing Skill2Unit 4 The Virtual World Quiz10Unit 5 overcome Obstacles Reading Skill2Unit 5 overcome Obstacles Writing Skill2Unit 5 overcome Obstacles Quiz10Unit 7 The History of English Reading Skill2Unit 7 The History of English Writing Skill2Unit 7 The History of English Quiz10