when I read magazine,I can't understand the English words ___them_英语解答

when I read magazine,I can't understand the English words ___them?
a,in
b,on
c,at
d,for

人气：477 ℃　时间：2019-11-11 15:27:19

解答

估计这里的magazine是指代一个种类,也就是指代杂志这个总的大类,如果要看单复数我想magazine就该指出来是哪个.
这个题选A