题干
100. My cousin wants to be a scientist and _____ science of nuclear.
A：devote to
B：devote for
C：devote himself to
D：devote himself for
答案(点此获取答案解析）
C
A：devote to
B：devote for
C：devote himself to
D：devote himself for
所用的时间为
，紧接着通过下一段位移
。则物体运动的加速度为