Now there is a misunderstanding that many people think that the usefulness of natural science is only to promote material civilization, but has nothing to do with human spiritual civilization. In fact, although our material life requires natural science knowledge, our spiritual life also has It also requires knowledge of natural sciences. The central meaning of this passage is? ['Explain the interrelationship between the construction of two civilizations.', 'Correct one-sided understanding of natural science.', 'Explain that natural science has an important role in the construction of spiritual civilization.', 'Explain that our spiritual life requires knowledge of natural sciences.']