OG语法91题

麦兜woo

Noboday knows exactly how many languages there are in the world, partly because of the difficulty of distinguishing between a language and the sublabguages or the dialects within it, but those who have tried to count typically have found about five thousand.

A.  and the sublanguages or the dialect within it, but those who have tried to count typically have found
B.  and the sublanguages or the dialects within them, with those who have tried counting typically finding
C.  and the sublanguages or the dialects within it, but those who have tried counting it typically find
D.  or the sublanguages or the dialects within them, but those who tried to count them typically found
E.  or the sublanguages or the dialects within them, with those who have tried to count typically finding

答案选A， 但it是指代谁呢? 为什么?我理解是指代languages，那不是应该用them吗?

Leliolevine

it指代a language