近年来，全球气候变暖问题日益严重，北极冰川融化速度也随之加快。北极冰川消融，将使北极熊等北极特有物种面临灭绝的威胁，还有可能造成海平面升高，对沿海国家和地区造成重大影响。这说明（    ）

①我们要珍爱生命，就要珍爱我们所生活的大自然                       ②人类对气候变化和自然灾害无能为力

③破坏人类赖以生存的生态环境，最终受害的还是人类自己       ④地球是人类共同的家园，关爱地球就是关爱人类自己

唐朝是我国诗歌繁盛的时代。写下“三吏”“三别”,被称为“诗圣”的是（    ）

依据国家相关法律规定，机动车驾驶员醉驾将受到刑事处罚。检测驾驶员是否酒后驾车，可用一种装有重铬酸钾（K₂Cr₂O₇）的仪器。K₂Cr₂O₇由____种元素组成，在K₂Cr₂O₇中Cr元素的化合价是____。

一定条件下，在密闭容器内，SO₂氧化成SO₃的热化学方程式为：2SO₂ (g) + O₂ (g) 2SO₃ (g)；△H=－a kJ·mol^－1在相同条件下，要想得到2a kJ热量，加入各物质的物质的量可能是（      ）

    In ancient Egypt, the pharaoh(法老) treated the poor message runner like a prince when he arrived at the palace, if he brought good news. However, if the exhausted runner had the misfortune to bring the pharaoh unhappy news, his head was cut off.

    Shades of that spirit spread over today's conversations. Once a friend and I packed up some peanut butter and sandwiches for an outing. As we walked light-heartedly out the door, picnic basket in hand, a smiling neighbor looked up at the sky and said, ”Oh boy, bad day for a picnic. The weatherman says it's going to rain.”I wanted to strike him on the face with the peanut butter and sandwiches. Not for his stupid weather report, for his while!

    Several months ago I was racing to catch a bus. As I breathlessly put my handful of cash across the Greyhound counter, the sales agent said with a broad smile ,”Oh that bus left five minutes ago.” Dreams of head-cutting!

    It's not the news that makes someone angry. It's the unsympathetic attitude with which it's delivered. Everyone must give bad news from time to time, and winning professionals do it with the proper attitude. A doctor advising a patient that she needs an operation does it in a caring way. A boss informing an employee he didn't get the job takes on a sympathetic tone. Big winners know, when delivering any bad news, they should share the feeling of the receiver.

    Unfortunately, many people are not aware of this. When you're tired from a long flight, has a hotel clerk cheerfully said that your room isn't ready yet? When you had your heart set on the toast beef, has your waiter mainly told you that he just served the last piece? It makes you as traveler or diner want to land your fist right on their unsympathetic faces.

    Had my neighbor told me of the upcoming rainstorm with sympathy, I would have appreciated his warming .Had the Greyhound salesclerk sympathetically informed me that my bus had already left, I probably would have said, ”Oh, that's all right. I'll catch the next one.” Big winners, when they bear bad news ,deliver bombs with the emotion the bombarded(被轰炸的)person is sure to have.