A:公民应关爱社会,遵守社会规则,承担对社会的责任
B:公民应尊重自然,维护生态平衡,承担对自然的责任
C:公民选择文明乘车行为主要是因为社会舆论压力和他人监督
D:公民参与公共生活、遵守公共规则,必然会牺牲个人自由
English is ____ (speaking/spoken) as the first language as well as the official language in America.