题干

2011年4月10日,我国成功将第八颗北斗导航卫星送入太空预定转移轨道,标志着北斗区域卫星导航系统的基本系统建设完成。北斗卫星导航系统是中国独立发展、自主运行,并与世界其他卫星导航系统兼容互用的全球卫星导航系统,是我国经济社会发展不可或缺的重大空间信息基础设施。材料表明(    )
①文化与政治相互促进、相互交融     
②经济是文化的基础,文化促进经济发展 
③要充分认识科学技术是第一生产力
④文化生产力在现代社会经济发展中的作用越来越突出

A:①③

B:②④

C:①②

D:③④

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答案(点此获取答案解析)

D

同类题2

    Parents often assume that time spent with their kids will gradually decrease in adolescence. But a new study suggests that while teens try to avoid spending a lot of time together with their parents, private parent-child meetings may actually increase in their early adolescent years. And that may raise a teenager's self-esteem (自尊) ansocial confidence, especially if it is time spent with Dad, the researchers added.

    The researchers created a long-termstudy in which they invited families in 16 school districts in central Pennsylvania to participate. In each family, a teenager, a younger sibling, their mother and their father were interviewed at home and then asked about their activities and self-worth five times over a period of seven years.

    The study authors were surprised to discover that when fathers spent more time alone with their teenagers, the kids reported they felt better about themselves. Something about the father's role in the family seemed to improve self-esteem among the teenagers in the study, said study author Susan McHale, a professor of human development at Pennsylvania State University.

  “Time spent with Dad often involves joking, teasing and other playful interactions. Fathers, as compared to mothers, were more involved in leisure activities and had more friend-like interactions with their children, which is crucial for youth social development,” the study showed.

    But Marta Flaum, a psychologist in Chappaqua , New York, said, “How these findings reflect the real world is areal question. The sample in the study is so small and so unrepresentative of more families in the country today that I'm not sure how much we cangeneralizing from it. In my community, in Westchester County, I don't see parents and teenagers spending much time together at all. Parents are often working so hard and have less time to be together with their kids.”

    However, Flaum encourages parents to make time for their kids no matter how much work they have to do. “Research like this reminds us of how important it is. The time we have with themis so short, ” she said.