一质点做匀速直线运动,现对其施加一恒力,且原来作用在质点上的力不发生改变,则( )
A. cap B. shirt C. sweater D. coat E. shoes
Music and art my favourite lessons.
I carried with me for years a vague模糊的____(印象) that he was a cold-hearted寡情的 man