合同是供方和顾客之间不能以任何方式传递的、双方同意的要求。131、
参考答案：对
—The students are cleaning the classroom.
— are cleaning the windows, ___ are cleaning the chairs. [ ]
A. Some, another
B. Some; others
C. Others; the other
D. Some, other
人体经络系统是由哪些部分组成的?
