情景对话：请根据对话内容选择正确单词，并将其适当形式填入横线上。

　　　　　　　　birthday  　 how    　can’t     　all     　hamburger

Bai Fei : Would you like to go to the Seven-star Park tomorrow?

Wu Dong: Yes, I’d love to. But I’m afraid I 1._________. I’ll go to see my

grandparents. What about the day after tomorrow?

Bai Fei: Sorry, I can’t. I’m going to my aunt’s 2._________party.

Wu Dong: What about Sunday ?

Bai Fei: OK. Let’s bring some fruit, 3._________ ,cakes and water

with us. We can have a picnic there.

Wu Dong: Good idea! 4._________long are we going to stay there?

Bai Fei: I think we’ll stay there 5._________ day.

Wu Dong: Great!

下列关于文化创新与社会实践的关系，理解正确的是（）

①文化的继承与发展需要在社会实践中不断创新

②只有抛弃传统的东西，才能推动个人和社会的进步

③要实现文化创新关键是要摆脱落后思想和文化的束缚

④社会实践的需要是文化创新的源泉和动力

A.②④

B.①④

C.③④

D.①③