分类：教育/科学-学习帮助
问题：单选13_______ofthestudents_______g 
 _______ of the students _______ girls in the class. A. Two fifths ； are B. Seventy rcents ； are C. Two fifth ； is D. Seventy percent ； is 
回答：选A. Two fifths ； are


如果用百分数:Seventy percent ；are
percent 不加s