The development of science and technology in the world today is uneven. It is more prominent due to the confidentiality of science and technology between countries, regions and regions, and between groups. However, all inventions and creations of science and technology should be the wealth of all mankind. Any country, Neither groups nor individuals should be considered as existing for a long time. What does this passage mainly support? ['The confidentiality of science and technology should be strengthened.', 'Advanced science and technology should be learned from abroad.', 'The confidentiality of technology is limited, and sooner or later it will be leaked.', 'Science and technology are the wealth of all humankind and should not and should not be kept secret for a long time.']