To promote and cultivate the spirit of the Chinese nation, it is necessary to play the role of the "backbone", "backbone" refers to ( ) A. Centered on cultural construction

Promoting and cultivating the spirit of the Chinese nation:

1. The most important is to give full play to the role of the theoretical system of socialism with Chinese characteristics, which is the "backbone" (advanced). "role (advanced). Under the leadership of the CPC and the guidance of Marxism, it is our activities have a "backbone", in order to form the *** with the same ideals and spiritual pillars in the whole society.

2. It is necessary to inherit and carry forward the fine traditions and traditional culture of the Chinese nation (ethnicity).

3. It is necessary to correctly treat foreign ideas and culture (inclusiveness). We must not only draw on the excellent civilization created by the peoples of the world, but also be vigilant against the Western hostile forces in their attempts to westernize and divide our country.

4. It must be combined with the promotion of the spirit of the times (epochal). The national spirit with patriotism at its core and the spirit of the times with reform and innovation at its core are complementary and mutually supportive, united in the great practice of developing socialism with Chinese characteristics.

So choose D.