（英语）percent(s) of ?
About 40 ______ of the population of this small town __ miners.
A. percents; are B. percent; are C. percents; isD. percent; is
答案是B 我选了A
这里的population 我是搞清楚了
主要是percent(s) of的疑问
我记得有看过percents of这一说法啊~
请问percents of在什么情况下用； percent of又在什么情况下用?