地幔中的岩浆在某个固定位置上具有强烈上升的趋势，称之为热点。当板块薄弱点经过热点时形成火山喷发，称为热点火山。随着板块移动，热点火山在板块表面留下一连串火山锥（如图所示）。下列时段板块移动速度最慢的是（    ）

    After finishing all the food in the little bowl，Goldilocks wanted to rest．She chose the small chair,but it was in pieces．Then she walked into the bedroom and very soon fell____in the small bed．The Bears returned to____house．Baby Bear pointed at Goldilocks and____，"That's the bad girl．She ate my food and broke my chair!"Hearing this．Goldilocks jumped up and hurried out of the house without____her basket．She decided not____for a walk in the forest again．

    My name is Henry．I'm twelve____old and I have got a small family.My father is a manager____ he works in a hotel.My mother is a doctor．Now we live in Shanghai，a big city____ China.

    My grandparents don't live with____.They are on a farm．On Saturday,I go to see them with my parents．I like to eat noodles with____ ．They are my favourite and they are from the farm．