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　　The picture that sits on my desk in my bedroom is my favourite. (A)When I have trouble studying, or I’m worried about an exam, I always take a look at it. It is a picture of my best friends taken three years ago when we were in middle school. It reminds(使……想起) me of the good time we’ve shared and the support(支持) their friendship still gives me today. Our lives have gone in different directions, (B) _______ our friendship we created has kept us close. Every week I get a message on my answering machine from one of them, or a letter in the mail with the latest news or vacation photos. I often get an email with a joke for the day or words of comfort about some problems in my life. My friends often show up for surprise birthday parties, and one of them (C) _______ travelled two hours from the other end of town just to watch my first English speech contest. Our friendship has carried me through a lot of difficult experiences, and has enriched the good ones.

炉火照天地，红星乱紫烟． 赧郎明 夜，歌曲动寒川．

“秋浦”，唐代属池州府，今安徽省池州市贵池区，古代时著名的铜、银产地． 这首诗的意思是：“炉中的炭火熊熊燃烧，映红了整个天地． 从炉中喷出一股股紫色的浓烟，时而有腥红的火星从炉烟中欢快地跳出来． 在月色的笼罩下和炉火的辉映中，工人们一个个红光满面，精神焕发． 他们一边劳动，一边歌唱，那嘹亮的歌声使寒冷的河水都荡漾起来了（ 寒川，也有译作寒冷的山 谷 ）．”

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北京时间2016年3月14日，科学家近日研制出了一种能够改变形状和大小的新型材料，能造出新型便携式建筑、“动态建筑”，或者能改变形状的车辆，以提高城市空间利用。这种新材料的发展表明（　　）

①尊重客观规律是造福人类的前提 

②人类根据规律发生作用的条件和形式利用规律

③科技创新可以改变规律         

④人造物的产生改变了世界的物质性。