问题详情:
In order to save energy, many factories have brought in some ____ machines.
ctive B. expensive C. efficient D. extreme
【回答】
C知识点:形容词
题型:选择题
问题详情:
In order to save energy, many factories have brought in some ____ machines.
ctive B. expensive C. efficient D. extreme
【回答】
C知识点:形容词
题型:选择题