问题
选择题
| 作匀变速直线运动的物体（加速度不为零）在10s钟内先后通过相距100m的A、B两点，则它在通过AB中点时的速率应（ ） |
| A．大于10m/s B．小于10m/s C．等于10m/s D．以上三种情况均可能 |
答案
答案：A
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| 作匀变速直线运动的物体（加速度不为零）在10s钟内先后通过相距100m的A、B两点，则它在通过AB中点时的速率应（ ） |
| A．大于10m/s B．小于10m/s C．等于10m/s D．以上三种情况均可能 |
答案：A
从方框中选择是党的动词并用其适当形式填空。有的需要加助动词或不定式符号（每次先用一次）
Today, we had a thanks-giving campaign day in our school with a lot of activities. In the morning, I made some thank-you cards and they 1_____________ to my teachers after class. The teachers were very happy to get them. From 3’ 00 to 4’ 00 p. m, I joined in a speech contest. In it, I 2_____________ a thank-you letter to Mum and Dad. After I came back home in the evening, I helped my parents 3_____________ the room and cook supper. I had such a meaningful day today. I realize that my parents and teachers and many others 4 _____________ a lot for me now. I must thank them by 5_____________ harder and becoming a useful person in the future. |