有关专家指出，建设美丽中国要引导公众树立绿色消费观，形成节约资源、保护环境的责任意识，把生态文明从理念转变为全民自觉行为。这种说法是基于（   ）

①先进的社会意识对社会发展起积极的推动作用

②社会意识来源于实践并能推动社会实践的发展

③正确的价值观能够在实践中转换为现实的力量

④价值观能够直接将理念转换成为全民自觉行动

下面四个命题：
①若直线$a\parallel$平面$\alpha$，则$\alpha$内任何直线都与a平行；
②若直线$a\perp$平面$\alpha$，则$\alpha$内任何直线都与a垂直；
③若平面$\alpha$平面$\beta$，则$\beta$内任何直线都与$\alpha$平行；
④若平面$\alpha$平面$\beta$，则$\beta$内任何直线都与$\alpha$垂直。
其中正确的两个命题是（   ）

    You can't see any object unless light from that object gets into your eyes. Some of the things you see give off light of their own. The sun, the stars, a lighted lamp are the examples that can be seen by their own light. But most of the things you see are not giving off light of their own. They are just reflecting(反射) light that falls on them from the sun or some other luminous bodies. The moon, for example, doesn't give off any light of its own. It is not luminous. You see it because sunlight falls on it and some of the sunlight reflects on the earth. So moonlight is only second—hand sunlight.
    When you look at a book, it sends some of the light which fails on it to your eyes, and you see the book. If light could be kept out from where you're so that there would be no light from the book to reflect. Then you couldn't see the book even with your eyes wide open. Light travels so fast that the time in which it travels from the book you're reading to your eyes is as short as if there were no time at time. Light reaches us from the moon, which is about 380, 000 kilometres away, in only a little more than a second.

抗战时期，一位父亲送给参军的儿子一面“死”字旗，旗上写着：“国难当头，日寇狰狞．国家兴亡，匹夫有分．本欲服役，乃过年龄．幸吾有子，自觉请缨．赐旗一面，时刻随身．伤时拭血，死后裹身．勇往直前，勿忘本分．”从中，我们能感受到这对父子（　　）

①救亡图存的坚定决心 ②宁死不屈的民族气节 ③赴汤蹈火的牺牲精神 ④不畏强暴的英雄气概．