Unlike other zoo animals, zoo-raised elephants______. A.have difficulty getting food B.live a very long life C.give birth to many babies D.develop health problems
A.A.have B.live C.give D.develop
【参考答案】
D 解析：根据题干中的zoo-raised elephants将本题出处定位到第2段。该段首先提到，对于陆地上最......