单选题 Each ______ effort a baby makes at speech is a sign of intellectual development.
  • A. cordial
  • B. compact
  • C. clumsy
  • D. chronic
【正确答案】 C
【答案解析】cordial:热情的,真诚的;compact:体积小的,精制的;clumsy:笨拙的,不灵活的;chronic:长期的,慢性的