出监教育是指监狱对已经出监的罪犯集中进行的一种专门教育。（）
参考答案：错
根据句意及首字母提示，完成下列单词拼写。
1. They are waiting for you at the bus s______.
2. Beijing is in the n______ of China.
3. I often get up at h______ past six in the morning.
4. There are s______ minutes in an hour.
5. It's about two k______ from here to there.
6. A small n______ of students take cars to school.
7. Traveling by a______ is very expensive.
8. On the Internet, we can know the things in other p______ of the world.
9. —When do you want to go for a picnic, on Sunday or Saturday?
—I am free both days. It all d______ on you.
10. Li Lei takes the s______ to school every morning.
在光滑的水平面上有一质量为2kg的物体，它的左端与一劲度系数为l00N/m的轻弹簧相连，右端连接一细线，物体静止时细线与竖直方向成37°角，此时水平面对物体的弹力为零，如图所示．已知sin37°=0.6，cos37°=0.8，重力加速度g取10m/s2，则下列说法正确的是（ ）
A．当剪断弹簧的瞬问，物体的加速度为7.5m/s2
B．当剪断弹簧的瞬间，物体的合外力为15N
C．当剪断细线的瞬间，物体的加速度为零
D．当剪断细线的瞬间，物体受到的合外力为15N
