Ò»¡¢Ñ¡ÔñÌ⣺£¨ ÿСÌâ5·Ö£¬¹²60·Ö£»ÔÚ¸ø³öµÄA¡¢B¡¢C¡¢DËĸöÑ¡ÏîÖУ¬Ö»ÓÐÒ»Ïî·ûºÏÌâÄ¿ÒªÇó £©
1.ÒÑÖª¼¯ºÏ £¬ £¬Ôò £¨ £©
£¨A£© £¨B£© £¨C£© £¨D£©
2.ÒÑÖªÏòÁ¿ ,Èç¹ûÏòÁ¿ Óë ƽÐÐ,Ôò µÄֵΪ( )
(A) (B) £¨C£© £¨D£©

3£®Èô ΪÐéÊýµ¥