语法与词汇24.After more than thirty years, the United States and China have begun to______their relations.
【正确答案】
B
【答案解析】本题考查动词辨析。根据主语the United States and China和宾语relations判断，句子描述的是两国关系，normalize(使正常化)符合语义，故答案为[B]项。economize意为“节俭，节省”；decentralize意为“分散，去中心化”；standardize意为“使标准化，使统一规格”。