A：____?

B：No. It is a photo of my uncle's family.

A：____?

B：They are in London.

A：____?

B：Yes. My cousin's name is Cui Tong.

A：____?

B：Thirteen.

A：____  ?

B：No. he is in Grade 8. But the girl is in Grade 7.

A：Oh. I see. She is his sister

①天然气  ②太阳能  ③风能  ④石油  ⑤煤  ⑥生物质能  ⑦核能  ⑧氢能．

孔子作为中华传统文化的象征，获得世界人民的敬重。下列哪一选项是孔子的主张 （     ）       

甲、乙两列火车，甲车上的乘客看到站台上的房屋向东运动，看到乙车向西运动，如果以地面为参照物，甲车是在向____行驶，乙车是在向____行驶。