单选题 "Why is James so difficult to understand?"
"It's his pronunciation. He should speak ______. "
  • A. more slower
  • B. more slowly
  • C. more slow
  • D. too slowly
【正确答案】 B
【答案解析】[解析] B)项的more slowly是副词比较级。 C)项的slower是形容词比较级，不能修饰谓语动词speak。