单选题 The circulatory system helps {{U}}dispose of{{/U}} wastes that would harm the body if they accumulated.
  • A. catch up with
  • B. bear up under
  • C. get rid of
  • D. run out of
【正确答案】 C
【答案解析】C项get rid of“处理掉”。A项catch up with“赶上”；B项bear up under“(在困难情况下表现得)坚强，不气馁”；D项run out of“用完，用光”。