2017年初，继“穿山甲案”后，新浪微博上又有网友曝光了数起濒危的国家一级、二级保护动物在各地遭到人类虐待的事例。人民日报对此发表评论：保护濒危物种，就是保护我们自己。这一事例表明（ ）
①各种生命互相依存，息息相关 ②人的生命具有独特性，人是自然界的主宰
③人类要敬畏自然界的大小生命，与自然和谐共处 ④每一种生命都有其存在的意义和价值
A：②③④
B：①②④
C：①③④
D：①②③
篮球场是一个长方形，它的长是50米，宽比长短14米，小明沿着篮球场跑5圈，要跑多少米？
A: Morning, Tom. You don't look well. ____?
B: Well, I have got a cold. But it's not serious. Hey, Jack, did you see the movie on CCTV 6 last night?
A: No, I didn't. ____?
B: Harry Potter Ⅲ. It was so exciting. So, what were you doing at that time?
A: ____. I'm not good at English, you know.
B: But English is not very hard to learn. ____.
A: Thank you for your advice. ____?
B: It's nearly 7:50. Hurry up, or we'll be late fir school.
下列情景中利用电磁感应原理的是（ ）
