1. 2 , 3. 1. 768 824 2. 3. 1 ( ) ( ) ( ) ( ) ( ) ( ) ( ) 2 (1) ( ) (2) ( ) 3 (1) (2) (3) (4) 4 (1) (2) (3) (4) 5 (1) (2) (3) (4) (5) 6 _ _ _ _ _ _ _ _ _ : 1 2 1 ( ) A (y ) (ji ) (bi n) B (cu ) (j n) (j ) C (ch ) ( ) (j ng) D (q ) (m i) (xi ) 2 ( ) A B C D 3 ( ) A B C D 4 ( ) A ( ) ( ) B C ( ) D 5 ( ) A B C D 6 (1) _ (2) _ _ _ (3) _ (4) _ _ _ 1 2 200 1 . 2 1 2