单选题 Female sea turtles, before laying (her) eggs, swim (as much) as 2,000 kilometers (to return) to the beaches (where)they themselves were hatched.
  • A. her
  • B. as much
  • C. to return
  • D. where


【正确答案】 A
【答案解析】将形容词性物主代词her改为their，与复数名词turtles呼应。