阅读短文，选择合适的选项。

A: Hi, Dad!

B: Hi, Jenny! Where is Lynn?

A: She is still at school. She cut her knee.

B: Oh, no! Poor Lynn! Is she okay?

A: Relax! Dad! Lynn is okay. It is only a little cut.

1. ____________ is still at school.

A. Lynn

B. Jenny

C. Danny

2. Lynn cut her ____________. 

A. finger

B. toe

C. knee

3. It is only a ____________ cut.

A. big

B. little

C. short

4. Lynn ____________ okay.

A. is

B. am

C. isn't

下图是叶片结构示意图，据图回答：

(1)写出图中序号所示结构名称：①_________⑥________

(2)叶片进行光合作用时，二氧化碳从标号________进入叶内，水分的运输由标号________完成。

(3)②所示部分含有较多的________。