甲、乙两物体作匀速直线运动，它们运动的路程之比是1：3，运动时间之比是4：1，那么运动速度之比是（   ）

完形填空。

   1! My name  2Alice. I'm fourteen  3  . I like playing Volleyball  4 going to the cinema. My favourite5  is Christmas.

    This is my friend Joe. He's fifteen. He   6  like playing sport. He can7  English and he likes Maths. He wants8   everything about it.

    This is my cousin. She is thirteen.   9 favourite sport is skating and she can skate very   10   . She likes music. She says it's exciting.

读图，下列从中得出的结论最为合理的是______。