在化学反应中，只有极少数能量比平均能量高得多的反应物分子发生碰撞时才可能发生化学反应，这些分子被称为活化分子．使普通分子变成活化分子所需提供的最低限度的能量叫活化能，其单位通常用kJ•mol﹣1表示．请认真观察下图，然后回答问题．

青藏高原上的主要农作物有

一电风扇和电热毯的铭牌上均标有“220V 60W”字样，它们正常工作相同的时间，关于消耗电能的多少，以下说法中正确的是（　　）

根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    Xiao Lin has a good friend. Her 1 is Lucy. She is from the USA. She's a(n) 2. Xiao Lin and Lucy  3 in the same class. They go to school five days a4. They stay at  5 on Saturday and Sunday. Lucy 6 China and Chinese food. Her favorite  7 is rice cake. At school they play football after class. Xiao Lin and Lucy like 8 things. Now they are making a plane. They like flying planes on Saturday and Sunday. Lucy 9 English and a little Chinese. They are  10 friends.

读经纬网图，完成填空．