用适当的词填空。

1. January is the _________ month of the year.

2. February is the _________ month of the year.

3. December is the _________ month of the year.

4. _________ is the third month of the year.

5. _________ is the fourth month of the year.

6. _________ is the fifth month of the year.

唯物辩证法的基本规律有（）。

A．偶然与必然

B．对立统一

C．现象本质

D．质量互变

E．否定之否定