4

4


00:00
00:44
01:06
01:38

===

2-4


3
1
1.5


1.
2.
3.


4-6


1
2

1
5
1-2


1. 2.5cm1
2.


6


1
2
2
1/2
1/3


1.
2. (1)
3.


16-18


2
1/2
2


1. 1.3cm
2.
3. (2)