胆汁是由胆囊分泌的。( )
参考答案：错
解析： 胆汁的分泌 胆汁是由肝细胞分泌的。
__________ is the first day of the week and ________ is the first month of the year.[ ]
A. Monday; January
B. Sunday; February
C. Sunday; January
确定位置时，一个数就能确定—个位置。[ ]
