5

()

15

7459

1:

2

3:

4:

14

1

2

3

4

1.

2.

3.

4.

1 A B C DA

2 . A B C DB

()

1492-14931487-1488149714981519-1522

- - --

1487--1488

14921493

1497--14981519--1522

()

1524

(1) (2) (3) (4)

15214271521511522961521427

(1)

1.1492ABCD

B

2.201011AB CDC

3.1603A BC DC

4. 500500 A B C D

A

5. /// A B C DA

6

A/// B/// C/// D///D

7()()()? A B C DB

8.

A. B.C. D.C