问题补充：
Babies are not born with moral sense; they can’t telldifference between right and wrong.
A. the;the
B. a;a
C. a;the
D. /;a
答案：
A. the;the
B. a;a
(答案→)C. a;the
D. /;a
解析：考查冠词的用法。moral sense是非感。第一空是泛指孩子不会生来就有是非感，因此用不定冠词a；第二空考查的是固定短语tell the difference between...and...,因此正确答案是C项。
