Which of the following weather signs(标志)means “rainy”?
A:
B:
C:
D:
I don't know _______ or not the film is suitable for children.
小刚的父亲感觉身体不适,化验尿中有血细胞,请判断,他父亲可能患有( )
人体内的胰岛素和性激素的化学成分