12ÕÅ·Ö±ð±êÒÔ1£¬2£¬¡­£¬12µÄ¿¨Æ¬£¬ÈÎÒâ·Ö³ÉÁ½µþ£¬Ã¿µþ6ÕÅ¡£

£¨1£©Èô1£¬2£¬3ÈýÕÅÔÚͬһµþµÄ¸ÅÂÊΪ¡£ÆäÖС¢mΪ»¥ÖʵÄÕýÕûÊý£¬ÔòµÈÓÚ£¨      £©

A£®2      B£®3      C£®5      D£®7      E£®11

  mµÈÓÚ£¨     £©

A£®11      B£®12      C£®15        D£®35       E£®77

£¨2£©Èô1£¬2£¬3£¬4ËÄÕÅÖУ¬Ã¿µþ¸÷ÓÐÁ½ÕŵĸÅÂÊΪ¡£ÆäÖÐn¡¢mΪ»¥ÖʵÄÕýÕûÊý£¬Ôòn=(       )

A£®2       B£®3       C£®5         D£®7        E£®11

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

ͬ²½Á·Ï°²á´ð°¸