题目内容
Newton was playing under an apple tree an apple fell onto his head．
A．when B．while C．after D．before
试题答案
1、A
相关题目
Newton was playing under an apple tree an apple fell onto his head．
A．when B．while C．after D．before
查看习题详情和答案>>题目内容
Newton was playing under an apple tree an apple fell onto his head．
A．when B．while C．after D．before
试题答案
1、A
Newton was playing under an apple tree an apple fell onto his head．
A．when B．while C．after D．before
查看习题详情和答案>>