The astronauts who flew into space in Shenzhou V and VI are the national h____ of China.
问题描述：
The astronauts who flew into space in Shenzhou V and VI are the national h____ of China.
答
应该用复数形式：heroes
乘神舟五号和神舟六号飞船飞上太空的宇航员 们 是中国的民族英雄.
请及时采纳,多谢!