A-A+
______ of the machines on display were made in
问题详情
______ of the machines on display were made in China.
A．Second-fifths
B．Two-fifth
C．Two-fifths
D．Second-fifths请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：C
解析：分数的表达足以基数词代表分子，序数词代表分母，除了分子是“1”的情况外，序数词要用复数。
考点：
