Generally speaking, children living in a city can not ox cow.
A. tell an; from a
B. tell; from
C. tell a; from a
D. tell; from a
网友回答
(答案→)A. tell an; from a
B. tell; from
C. tell a; from a
D. tell; from a
解析：考查动词及冠词。Ox和cow都是泛指，故分别用冠词an和a。tell … from …区分。句意：一般说来，生活在城市的孩子不能区分公牛和母牛。