实践的功利态度
参考答案：
是由满足人的实用功利或物质需要的动机所推动，并直接导致具体行动的意向，是人们日常行为的趋向。
根据句意填词：
1. How o_____ do you come to school late? Never.
2. Farmers milk some m _____ from cows.
3. J_____ food isn't good for your health.
4. I can't do it by myself. Can you h_____ me?
5. I eat fruit three t_____ a week.
6. My father is very busy. He only plays basketball o_____ a week.
7. Does he drink milk every morning? No, hardly e_____.
如图所示，粗糙的斜面体M放在粗糙的水平面上，物块m恰好能在斜面体上沿斜面匀速下滑，斜面体静止不动，斜面体受地面的摩擦力为F1；若用平行与斜面向下的力F推动物块，使物块加速下滑，斜面体仍静止不动，斜面体受地面的摩擦力为F2；若用平行于斜面向上的力F推动物块，使物块减速下滑，斜面体还静止不动，斜面体受地面的摩擦力为F3。则
A．F2＞F3＞F1
B．F3＞F2＞F1
C．F1=F2=F3
D．F2＞F1＞F3
