( ) “There’s a motorcycle coming" is seen as, out of context, a statement that a motorcycle is coming. But in a particular context, it might be a warning to a pedestrian not to step onto a road. When the study of meaning is considered in the context of use, it becomes a branch of linguistics called pragmatics.

2009年兴边富民、人口较少民族地区和特困民族地区扶持发展、民族特色村寨保护与发展等工程。各级政府共投入民族专项资金2.85亿元，比上年增长l7.63％，民族自治地方社会生产总值比上年增长l2.4％。上述事实体现了[ ]

①民族特色是民族地区脱贫致富的关键 ②国家投入是民族地区发展的根本动力 ③我国坚持各民族共同繁荣的原则 ④我国各民族享有平等的发展权利

A．①②

B．①④

C．②③

D．③④