我国的基本国情是( )
A:我国是不发达阶段
B:我国正处于并将长期处于社会主义初级阶段
C:我国是发展中国家
D:我国已经很发达
阅读短文,判断正误
Look at this photo(照片).This woman is my mother. She is 36.This man is my father. He is 37.This girl is my sister. She is 11.The little boy is me. I am 6. I love them. And they love me very much.
为调查可变性红斑角化症遗传方式并绘制遗传系谱图,下列说法正确的是( )
下列说法中正确的是()
想一想,在安静状态下如何测量脉搏?