单选题 The scientists have absolute freedom as to what research they think it best to ______.
A. engage B. devote C. seek " D. pursue

【正确答案】 D
【答案解析】[解析] 动词辨析题。pursue表示“追随,追求;进行,从事”;engage虽然也有“参加,从事”之意,但搭配为:engage(sb. )in sth. ;devote表示“付出,奉献,献身”,搭配为devote oneself/sb. to sb. /sth. ;seek表示“探求,寻求”。根据句意应选D:pursue。