This summer I visited the farm set up by my uncle,_______he raised fifty_______.

A．there; cattle

B．where; head of cattle

C．in which; head of cattles

D．where; cattle

三只小猫去钓鱼，它们共钓上36条鱼，其中黑猫和花猫钓到的鱼的条数是白猫钓到的鱼的条数的5倍，花猫钓到的鱼比另外两只猫钓到的鱼的条数的2倍少9条。黑猫钓上 ( )条鱼。

A．8

B．9

C．10

D．11