烷烃的卤代反应中,活性最强的氢为( )
A. 伯氢
B. 仲氢
C. 叔氢
D. 甲烷中的氢
I think that love is when you put someone ______________. it's definitely more than just the feeling.
love is ___________ the differences that you two have and learning to find the imperfection and working with it.
love is the ____________ feeling one can present(呈现) to another person who understands them.