单选题 He couldn't ______ his curiosity to see what was in the box.
  • A. retain
  • B. restrain
  • C. restrict
  • D. represent
【正确答案】 B
【答案解析】A项retain“保留”；B项restrain“抑制”；C项restrict“限制”；D项represent“代表”。restrain后常接表示某种情绪的词，如：restrain anger/curiosity；而restrict则表示限制在一定的范围，如：be restricted within narrow limits；be restricted to 30 km an hour。