【简答题】When I was 16 years old, a boy gave me an important gift. It was a smile. It was the early autumn of my first year at a junior high school, and my old school was far away. As a result, no one knew who...
【单选题】下面关于牛顿万有引力定律说法错误的是()
【单选题】Which inference is more firmly based on the information in the passage? Early one morning, a man was walking along a sandy, deserted beach. At least he thought it was deserted. As he gazed ahead of hi...
A.
The boy knows he cannot save all the starfish.
B.
The man believes the boy’s efforts are admirable.
【单选题】It was in the stone house was built as a school by local villagers the boy finished his primary school. [ ]
【单选题】It was amazing that the boy was able to solve the problem so quickly.
【单选题】关于牛顿第一定律,下列说法中错误的是( )
A.
牛顿第一定律告诉我们:做匀速直线运动的物体一定不受力
B.
牛顿第一定律是在实验的基础上进一步推理而概括出来的,是一个科学的理论
C.
地球上没有不受力的物体,但受平衡力的物体可以参照牛顿第一定律进行分析
D.
控制小车从斜面同一高度滑下是为了让小车滑到水平面时的初速度相同