成人的心肌细胞中，比腹肌细胞数量显著多的细胞器是（  ）

先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。    Do you have a good friend? I have one. She's English and1name is Kate.We are in the same (相同的)2and my desk is next to hers.She is nice and I3her well.She always4me with my English and I always tell her how to say "quilt", "grandma", "radio" …in Chinese.She likes reading and she has so many5in her room.They are everywhere — on her bed, on the sofa and on her desk ...Some of them are6the computer.She7it's very important(重要的).Look! This is a8of Kate's family.9people(人)are in it：her parents.her sister, her brother and herself(她自己).Kate's mother Helen is our English10.She teaches well and she's good to us.We like her very much.

- ______ do you like winter ? (   )

- Because I can skate.

假如你的朋友冬季去意大利旅游，你会告诉他那里（  ）

2015年12月13～14日，四川大部分地区迎来大幅度的降温．图1是四川某区域的等高线地形图，该区域在此次降温的过程中下了雪．为看雪景，小明一家在周末（18日）赶到该区域．请结合地球公转示意图（图2），完成下列问题．