1¡¢ÏÂÁв»µÈʽÖУ¬ÊôÓÚÒ»ÔªÒ»´Î²»µÈʽµÄÊÇ£¨   £©

A¡¢ £¼    B¡¢ £¾   C¡¢ £¾  D¡¢ £¼

2¡¢Èç¹û £¼ £¬ÔòÏÂÁи÷ʽÖУ¬³ÉÁ¢µÄÊÇ£¨    £©

A¡¢ £¼   B¡¢ £¾   C¡¢ £¼   D¡¢ £¾

3¡¢¶ÔÓÚÈÎÒâÓÐÀíÊý£¬ÏÂÁи÷²»µÈʽÖУ¬Ò»¶¨³ÉÁ¢µÄÊÇ£¨    £©

A¡¢ £¼   B¡¢ £¾   C¡¢ £¼   D¡¢ ≥