单选题 People weak in character usually {{U}}shudder{{/U}} at the sight of blood.
  • A. shake
  • B. fear
  • C. dislike
  • D. quiver
【正确答案】 D
【答案解析】[解析] quiver=shudder“颤抖，发抖”，二者为一对近义词。shake(shook)“摇动，振动”。