单选题 The police are ______ the traffic accident that happened yesterday.
【正确答案】 C
【答案解析】[考点] 词组辨析
[解析] look down upon:蔑视,看不起;look forward to:(高兴地)期待,盼望;look into:调查,审查;look after:照料,照顾。根据句意,选C。