题干
—She's never been to Japan, ___________?
—_________. She went there last month.
A：has she; Yes, she has
B：is she; No, she isn't
C：has she; No, she hasn't
D：is she; Yes, she is
答案(点此获取答案解析）
A
时．汽车的瞬时加速度的大小为( )