1.Éè ΪÐéÊýµ¥Î»£¬¸´Êý µÄÐ鲿Ϊ £¨ £©£¨a£© £¨b£© £¨c£© £¨d£© 2.ÒÑÖª¼¯ºÏ £¬¼¯ºÏ £¬È«¼¯ £¬Ôò¼¯ºÏ £¨ £©£¨a£© £¨b£© £¨c£© £¨d£© 3.Ò»¸ö¿Õ¼ä¼¸ºÎÌåµÄÈýÊÓͼÈçͼ£¨1£©Ëùʾ£¬ÆäÖÐÕýÊÓͼΪµÈÑüÖ±½ÇÈý½ÇÐΣ¬²àÊÓͼÓ븩ÊÓͼΪÕý·½ÐΣ¬Ôò¸Ã¼¸ºÎÌåµÄÌå»ýºÍ±íÃæ»ý·Ö±ðΪ £¨ £©£¨a£© £¬ £¨b£© £¬ £¨c£© £¬ £¨d£© £¬ 4.º¯Êý ÊÇ £¨ £©£¨a£©ÖÜÆÚΪ µÄÆ溯Êý £¨b£©ÖÜÆÚΪ µÄżº¯Êý£¨c£©ÖÜÆÚΪ µÄÆ溯Êý £¨d