Ò»¡¢Ñ¡ÔñÌâ:±¾´óÌâ¹²12СÌ⣬ÿÌâ5·Ö£¬¹²60·Ö¡£
1. =( )
£¨A£© £¨B£© £¨C£© £¨D£©
2. ÒÑÖªÏòÁ¿ £¬Ôò =( )
£¨A£© £¨B£©2 £¨C£© £¨D£©3
3.ÏÂÁк¯ÊýÖУ¬×îСÕýÖÜÆÚΪ ÇÒͼÏó¹ØÓÚÔ­µã¶Ô³ÆµÄº¯ÊýÊÇ( )