如图所示，质量m₁=0.3 kg的小车静止在光滑的水平面上，车长L=15 m，现有质量m₂=0.2 kg可视为质点的物块，以水平向右的速度v₀=2 m/s从左端滑上小车，最后在车面上某处与小车保持相对静止。物块与车面间的动摩擦因数μ=0.5，则小车的最大速度是____________m/s；物块在车面上滑行的时间是____________s。

阅读理解。

     We do the shopping (购物) on Sundays. I often go to the supermarket (超市) with my mother on Sunday

morning in a car. Father likes red apples very much. So we buy some red apples for him. Mother likes yellow

bananas. The oranges are very nice. Mother buys some for me. I like oranges very much.

     There are many vegetables. They are very nice. We buy some tomatoes and carrots. After shopping, we

have some milk, some bread and some ice-cream. And then we go back home.

1. Who likes apples very much?

A. Mother

B. Father

C. I

D. I don't know 

2. What does mother like?

A. oranges

B. apples

C. bananas

D. pears

3. Mother buys some oranges for _____.

A. us

B. me

C. her

D. him 

4. After shopping, ______.

A. we go back home

B. we have some food

C. we have some apples

D. We only (仅仅) have some ice cream.