轿车的加速度变化快慢将影响乘坐的舒适度.加速度变化得越慢,乘坐轿车的人会感到越舒适.若引入一个新物理量用于表示加速度变化的快慢,则该物理量的单位应是( )
A:m/s
B:m/s2
C:m/s3
D:m/s4
不同的人生,有不同的色彩,有的绚丽,有的平凡。绚丽让我们品味绽放的热烈,平凡让我们品味朝阳与落日的从容,说明( )
Tomorrow we will go to Hainan. It's warm there. We will have a special Chinese New Year's Day. Now let's get ready! We need three tickets from Shijiazhuang to Hainan. We don't need winter clothes. I want a beautiful dress. My parents take some T-shirts and shorts. We need to take milk, cakes and fruit. We need three hats. The sun is very hot there. We don't want to turn black. That's all done.
① ② ③ ④
⑤ ⑥ ⑦ ⑧
⑨ ⑩ ⑪ ⑫
____
员 用 后 欢 术 际 吓 她 包 叫 迎 进
5画:____
6画:____
7画:____
“从前皇帝自称为天子,如果有人说皇帝是强盗,可以打倒,别人一定把他看作疯子。孙中山就曾经是一个被人家看作是疯子的人。相反在辛亥革命以后,如果有人想做皇帝或者拥护别人做皇帝,一定也被看作疯子。”发生这种变化的原因是( )