The quality of China's traditional virtue is eternal. B. it has a long history and is profound. C. connecting the preceding with the following and spreading through the ages. D.

Analysis of test questions: Option A is correct, in line with the meaning of the question, and immortality is the quality of Chinese traditional virtue, so it is chosen. The point of view of option b is inconsistent with the meaning of the question. It is the characteristic of China culture rather than the traditional virtue of China, so it is excluded. Option c does not match the meaning of the question. The quality of Chinese traditional virtues will be passed down through the ages, but it cannot connect the preceding with the following, so it is excluded. The point of view of option D is inconsistent with the meaning of the question. It is not the traditional virtue of China, but the characteristic of China culture, so it is excluded.