Analysis of test questions: Kennedy's words emphasize that we should be responsible for the country and do what we can for the country's development, which inspires us to consciously assume the responsibility for the country and the nation, shoulder the heavy responsibility of rejuvenating China, and at the same time have the patriotic feelings of "every man is responsible for the rise and fall of the world." So ABD meets the meaning of the question; In our country, the personal interests of citizens are basically the same as those of the state. To safeguard national interests, we should also give consideration to personal interests, which is C mistake. The answer to this question is ABD.