I can't understand the article ---there are a few new words in it .A.though B.if C.because D.but

I can't understand the article ---there are a few new words in it .A.though B.if C.because D.but
I can't understand the article ---there are a few new words in it .A.though B.if C.because D.but

I can't understand the article ---there are a few new words in it .A.though B.if C.because D.but
C 典型的因果关系,因为有一些生词,所以看不懂.