有一位古人在谈到学习知识的方法时,曾说“苟有恒,何必三更睡五更起;最无益,莫过一日暴十日寒”。请问此人是谁?
参考答案:
胡居仁
— Who ______ the house in your family?
— My father and mother ______. [ ]
A. clean, clean
B. cleans, clean
C. cleans, do
D. cleans, does
如何认识黑森瘿蚊的检疫重要性?