基因型为FFTt的个体产生的配子有：[ ]
A．FT和FT
B．Ft和Ft
C．FF和Tt
D．FT和Ft
答案：D
206. My cousin is a sailor. He's doing very well in the _______.
A．army
B．navy
C．air force
D．Boat
（3x3）2=______．
