在“观察叶片的结构”实验中，如图表示将叶片制成切片，并在显微镜下观察到叶片结构的情况．据图回答问题：在图中的方框内填写有关结构的名称．

A: Hello! May I speak to David, please?

B: Hello! This is David speaking. Who's t____?

A: Simon speaking. What are you going to do tomorrow?

B: I have no i____. Do you have any plans?

A: Yes. Shall we go to the zoo?

B: Good idea. We can see different kinds of animals there. A____ them, I like pandas best.

A: So do I. I can't wait to see them. B____ the way, can we feed the pandas?

B: No, I'm afraid not. It may h____them.

A: I see. Can you take your c____ with you? Mine is broken.

B: No problem. How can we get there?

A: The No.8 bus can take us there.

B: When shall we meet?

A: Let's m____ it half past eight in the morning.

B: All right. See you then at the school gate.

A: See you.

当历史的尘埃落定，许多喧嚣一时的东西都会烟消云散，惟有优秀的文化会长留世间，给人以思想的启迪、心灵的温暖和精神的慰藉。这一观点看到了（    ）

①优秀文化是引领人们前进的旗帜

②文化随着时代的发展而变迁

③文化对人的思想和行为具有深远持久的影响

④文化是人类社会特有的现象