下列生物的繁殖方式中,属于有性生殖的是( )
A:玉米用种子繁殖
B:椒草用叶片繁殖
C:细菌分裂生殖
D:嫁接植物枝条
I go to the USA by bus.
— How far is your cousin's home from here?— It's about two ______ drive.