下列选项中可以单色印刷的是()
A.非处方药专有标识
B.非处方药红色专有标识
C.非处方药绿色专有标识
D.药品的使用说明书和大包装上的非处方药专有标识
参考答案:D
有一个三角形的两条边长分别为3、4,要使三角形为直角三角形,则第三边为______.
We _______ into five groups to go to the old people's home. We did many things to cheer them up. [ ]
A. divided
B. are divided
C. were divided
D. divide