关于染色体、DNA、基因关系的叙述,正确的是( )
A:染色体由DNA和糖类组成
B:人的23对染色体包含23个DNA分子
C:1个DNA分子就是1个基因
D:DNA上具有特定遗传信息的片段叫基因
It is generally believed that mutual understanding ______ a happy marriage and life.
My mother isn't watching TV at the m____.