⑴What is this? ____ A. Thursday.
⑵What are these?____ B. Yes, it is.
⑶What is she wearing?____ C. They're shorts.
⑷Is this a new cap?____ D. She is wearing a blue skirt.
⑸What day is today?____ E. It's a new T-shirt.
如图所示是甲、乙两个物体做匀速直线运动时的路程随时间变化的图象,根据图象可知,运动速度比较大的是物体____ ;甲、乙两物体通过相同的路程,所用时间的比值为____ .
为了表现梅雨潭的绿美到极致,作者用来作衬托的是( )。