用括号内所给动词的适当形式填空。(必要时可加助动词或情态动词)
Do you know how to study better and 1 ( make) your study more effective? We all know that
Chinese students usually study very hard for long time. This is very good, but it 2 ( not, help) a lot,
for an effective student 3 (have) enough sleep, enough food and enough rest and exercise. Every day
you need to go out for a walk or visit some friends or some nice places. It's good for your study.
When you return to your studies, your mind 4 (refresh) and you'll learn more and study better.
Psychologists 5 ( find) that learning 6 ( take) place this way. Here 7 ( take) English learning as
an example. First you make a lot of progress and you feel happy. Then your language study seems 8
(stay) the same, so you 9 (think) you're learning nothing and you may give up. This can last for days
or even weeks, yet you needn't give up. At some point your language study will again take another big
jump. If you get enough sleep, food, rest and exercise, studying English 10 (be) very effective and
interesting. Don't give up along the way. Learning slowly, you're to get a good result.
的光滑斜面顶端有一质点
自静止开始自由下滑，同时另一质点
自静止开始由斜面底端向左以恒定加速度
沿光滑水平面运动，
