回答下列问题：

汽车在平直公路上以10m/s的速度做匀速直线运动，发现前面有情况而刹车，获得的加速度为2m/s²，则汽车经过3s时速度的大小为____ m/s；经10s时速度的大小是____．

“情愿做野草, 等着地下的火烧”这句诗表明鲁迅先生的态度是（   ）

短文改错。

    Alice is a good friend of me____ .She was born in a small town near London on the November 3rd 1980____.Her father was a worker and her mother  was a teacher in England. When we were in Grade First____  , her family moved to Shanghai. Her father find ____ work there. Now her father works in a big factory. Her mother is still ____ teacher in China. She doesn't lives____  in Shanghai. Everything in Shanghai is very dear.Her home lives____  very far from the school.So they have to get up very early in the morning every day and go to school by bus.Because she is new here,she has a few friends____  here.“Life is not so happy here,”she often tells____ to me. I think I should help Alice.