问题
选择题
| 如图是探究阻力对物体运动的影响的实验装置，下列说法错误的（ ） |
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A．每次实验时，应使小车滑到水平面时的初速度相等 B．由于惯性，小车到达水平面后继续向前运动 C．水平表面越粗糙，小车的速度减小得越快 D．实验表明，力是维持物体运动的原因 |
答案
答案：D
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| 如图是探究阻力对物体运动的影响的实验装置，下列说法错误的（ ） |
| |
A．每次实验时，应使小车滑到水平面时的初速度相等 B．由于惯性，小车到达水平面后继续向前运动 C．水平表面越粗糙，小车的速度减小得越快 D．实验表明，力是维持物体运动的原因 |
答案：D
| 完形填空。 | |||
| An old man has a cat. The cat now is very old. She can't run quickly, and she can't bite 1 . One day the old cat saw a mouse, she jumped and 2 it. But she couldn't bite it. So the mouse got out of her 3 and ran away. The old man got very 4 and beat the cat. The cat said to him."Don't beat your servant. Don't be unkind to the 5 When they are young, they can do good work." | |||
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