A.121
B.115
C.119
D.117
[单选题]5,12,21,34,53,80,( )A.121 B.115C.119 D.117
[单选题]:5,8,13,21,34,( )A.45B.50C.55D.60
[单选题]5,8,13,21,34,( )。A.45B.50C.55D.60
[单选题]-3,0,5,12,21,()A.29B.32C.37D.35
[单选题]-3,0,5,12,21,( )A.29B.32C.37D.35
[单选题]-3,0,5,12,21,( )A.29B.32C.37D.35
[单选题]-3,0,5,12,21,()A.29B.32C.37D.35
[单选题]:30,12,360,21,80,1680,( ),3,99A.33B.9C.720D.15
[单选题]在1,1,2,3,5,8,13,21,34……这一斐波那契数列中,第12项是()。A .143.0B .144.0C .145.0D .146.0
[主观题]填空。2/7=()/219/12=3/()5÷3=()/()=1又()/()