单选题
Of all the senses that help a small baby to distinguish his mother, the sound of her voice, his sense of smell, his sight, the distinctive way she handles him, sight is______.
【正确答案】
B
【答案解析】predominant，“占优势的”、“主要的”：permanent，“永久的”，如：I have a permanent job here．我在这里有一个永久的工作。prevalent，“流行的”、“普遍的”，如：The habit of travelling by aircraft is becoming more prevalent each year．坐飞机旅行一年比一年普遍了。preliminary，“初步的”，如：a preliminary examination 初试。