調雨順已被視為“奢侈品”。氣象學家對此眾說紛紜，莫衷一是。有的說是全球變暖所致，有的說是大氣環流異常，還有的認為厄爾尼諾是罪魁禍首。

盡管如此，大多數學者都認同這樣一個觀點：全球氣候變化速度正在加劇，極端災害天氣今后無疑將更加頻繁，并且其強度和范圍都將走強。面對日益脆弱的全球氣候，人類需要更認真地思考，如何切實有效地規范自身活動，珍愛我們共同的家園。

未來極端事件將對與氣候有密切相關的行業，如水利、農業、林業、能源、健康和旅游業等有更大影響。在世界經濟發展不穩定性、不確定性上升的當下，上述因素為全球經濟復蘇帶來更多變數。

國家。

雖然目前它的定位精度與GPS還有一定的差距，但它具備了GPS所沒有的短報通信和位置報告的功能。在沒有手機信號的地方，用戶也可以通過該系統發送短信。

2008年四川汶川大地震后，災區電話無法接通，手機信號中斷。救援人員將北斗導航終端帶入災區，及時保持了與外界的通訊聯絡。

該系統的位置報吿功能可以幫助交通管理部門掌握行駛車輛的位置，及時疏導交通，緩解交通擁堵狀況。

雖然北斗衛組導航系統時中國獨立發展、自主運行的衛星導航系統，但這并不影響它與世界上其他衛星導航系統之間的兼容性。用戶在同時使用北斗和GPS這兩種導航系統時，定位和導航效果會更好。

r pumps to fix flat tires, footrests to lean on while taking breaks and trash cans that are specially angled, so you can throw in empty water bottles without stopping.

Best of all, you can cycle on those routes for long distances without having to make way for cars and trucks at junctions and traffic lights, according to the official description of the Cycle Super Highways, which are under construction here as part of the Danish capital’s efforts to become carbon-neutral by 2025. Are they as good as they sound? These days it is hard to find a big city that doesn’t make grandiose claims to encourage cycling, and harder still to find one that fulfills them. Redesigning congested traffic systems to add hike lanes to overcrowded roads is fiendishly difficult, especially in historic cities with narrow cobbled streets like Copenhagen. But as its cycling program sounds so ambitious, I went there to try it.

Maybe I’d be less cynical if I lived in Amsterdam, Cologne or any other city with decent cycling facilities. But as a Londoner, I’ve learned the hard way to be suspicious whenever politicians promise to do anything bike-friendly. London’s mayor, Boris Johnscoff, is a keen cyclist, who issues policy papers with auspicious titles like “Cycling Revolution” and has continued his predecessor’s biking program by introducing a cycle-rental project and building new bike lanes.

So far, so good. You may think, unless you have braved the potholes, parked trucks and construction debris that obstruct those lanes, many of which appear to have been designed by “someone who has never seen a bicycle, let alone ridden one.

Luckily for Copenhagen’s cyclists, their system has been more thoughtfully designed. The capital is a compact, reasonably flat city which is naturally bike-friendly, and even its old cycle routes are wider and better maintained than London’s. More than a third of Copenhageners already bike to work or school, mainly on short journeys of an average of 5 kilometers, or 3 miles.

The city’s traffic planners hope to encourage people to cycle for longer distances by creating the cycling equivalent of freeways, which will provide fast, direct routes of up to 22 kilometers into the center. A total of 28 highways are planned, providing 495 kilometers of dedicated bike tracks. The first one fromthe western suburb of Albertslund opened in April 2012, followed a year by the second, from Farum, northwest of the city.

What are the superhighways like? Judging by my experience of the Farum route, they’re great. Impressive though the air pumps, footrests and angled trash cans are, the biggest thrill was pedaling through the “green waves” of uninterrupted green traffic lights, which have been programmed to prioritize cyclists over cars.

It was also cheering to see bikers chatting while cycling two or three abreast in “conversation lanes.” Like most urban bikers, I usually value the practical benefits of cycling, as a speedy means of transport and convenient form. of exercise, but the Farum route made it as pleasurable as zipping along empty country lanes.

The planners hope the full network will eventually encourage a 30-percent increase in cycling among Copenhagen’s comments, which would be hugely beneficial in terms of reducing the city’s CO2 emissions and health care costs.

f to Picasso.

In a class at the company’s internal university, the instructor likened the 11 lithographs that make up Picasso’s The Dull to the way Apple builds its smartphones and other devices. The idea is that Apple designers strive for simplicity just as Picasso eliminated details to create a great work of art.

Steven P. Jobs established the Apple University as a way to inculcate employees into Apple’s business culture and educate them about its history, particularly as the company grew and the technical business changed. Courses are not required, only recommended, but getting new employees to enroll is rarely a problem.

Randy Nelson, who came from the animation studio Pixar, co-founded by Mr. Jobs, is one of the teachers of “Communicating at Apple.” This course, open to various levels of employees, focuses on clear communication, not just for making products intuitive, but also for sharing ideas with peers and marketing products.

In a version of the class taught last year, Mr. Nelson showed a slide of The Bull, a series of 11 lithographs of a bull that Picasso created over about a month, starting in late 1945. In the early stages, the bull has a snout, shoulder shanks and hooves, but over the iterations, those details vanish. The last image is a curvy stick figure that is still unmistakably a bull.

“You go through more iterations until you can simply deliver your message in a very concise way, and that is true to the Apple brand and everything we do,” recalled one person who took the course.

In “What Makes Apple, Apple,” another course that Mr. Nelson occasionally teaches, he showed a slide of the remote control for the Google TV, said an employee who took the class last year. The remote control has 78 buttons. Then, the employee said, Mr. Nelson displayed a photo of the Apple TV remote control, a thin piece of metal with just three buttons.

How did Apple’s designers decide on three buttons? They started out with an idea. Mr. Nelson explained, and debated until they had just what was needed — a button to play and pause a video, a button to select something to watch, and another to go to the main menu.

The Google TV remote control serves as a counterexample. It had so many buttons, Mr. Nelson said, because the individual engineers and designers who worked on the project all got what they wanted.

安全對有效應對國際金融危機沖擊、推動世界經濟全面復蘇和長遠發展具有重要意義。

國際社會應樹立互利合作、多元發展、協同保障的新能源安全觀，共同穩定能源等大宗商品價格、防止過度投機和炒作，保障各國特別是發展中國家能源需求，維護能源市場正常秩序。同時，各國應改善能源結構，加強先進能源技術的研發和推廣，大力發展清潔和可再生能源，在相關領域積極開展國際合作。

中國政府高度重視能源和能源安全問題。在解決中國的能源問題上，始終堅持節約優先、立足國內、多元發展、保護環境的原則，加強國際互利合作，大力改善和調整能源結構，努力構筑穩定、經濟、清潔、安全的能源供應體系。中國愿與世界各國一道共同努力，建立起能源合作長效機制，為保障全球能源安全、應對氣候變化做出應有的貢獻。

有11次與既有大國之間發生了對抗和戰爭。但現在的世界已今非昔比，中美之間乃至全球各國之間已是日趨緊密的利益共同體，對抗將是雙輸，戰爭沒有出路。不沖突、不對抗的宣示，就是要順應全球化潮流，改變對中美關系的負面預期，解決兩國之間的戰略互不信，構建對中美關系前景的正面信心。

相互尊重，是構建中美新型大國關系的基本原則。世界是多樣的，中美作為兩個社會制度不同、歷史文化背景各異，同時又利益相互交織的大國，相互尊重就顯得尤為重要。我們只有相互尊重對方人民選擇的制度與道路，相互尊重彼此的核心利益與關切，才能求同存異，進而聚同化異，實現兩國的和諧相處。

合作共贏，是中美構建新型大國關系的必由之路。中美雙方在雙邊關系各領域都有著廣泛合作需求和巨大合作潛力。此外，作為兩個大國，環顧當今世界，從反恐到網絡安全，從核不擴散到氣候變化，從中東和平到非洲發展，也都離不開中美兩國的共同參與、合作和貢獻。

代以來中華民族的夙愿。

在新的歷史時期，中國夢的本質是國家富強、民族振興、人民幸福。我們的奮斗目標是，到2020年國內生產總值和城鄉居民人均收入在2010年基礎上翻一番，全面建成小康社會。到本世紀中葉，建成富強民主文明和諧的社會主義現代化國家，實現中華民族偉大復興的中國夢。

實現中國夢，必須堅持中國特色社會主義道路。我們已經在這條道路上走了30多年，歷史證明，這是一條符合中國國情、富民強國的正確道路，我們將堅定不移地沿著這條道路走下去。

實現中國夢，必須弘揚中國精神。用以愛國主義為核心的民族精神和以改革創新為核心的時代精神振奮起全民族的“精氣神”。

實現中國夢，必須凝聚中國力量?？照務`國，實干興邦。我們要用13億中國人的智慧和力量，一代又一代中國人不懈努力，把我們的國家建設好，把我們的民族發展好。

實現中國夢，必須堅持和平發展。我們將始終不渝走和平發展道路，始終不渝奉行互利共贏的開放戰略，不僅致力于中國自身發展，也強調對世界的責任和貢獻;不僅造福中國人民，而且造福世界人民。實現中國夢給世界帶來的是和平，不是動蕩;是機遇，不是威脅。

空間技術研究院的簡介，這一塊需要大家平時多練習積累。

本公司是全球最大最強的冶金建設運營服務商，擁有24萬在職員工，資產規模超7000億元，境外機構、資源項目與承建工程遍布全球60多個國家和地區。

本公司有著獨特的全產業鏈競爭優勢，公司在全球金屬礦業領域率先打通了從資源獲取、勘查、設計、施工、運營到流通、深加工的全產業鏈，形成了為金屬礦產企業提供系統性解決方案，和工程建設運營一體化全生命周期的服務能力。

公司金屬礦產資源儲量豐富，在國內外擁有一批世界級優質礦山。在冶金工業建設領域，公司積累了貫穿各環節的核心技術優勢和設計施工能力，承擔了中國大中型鋼鐵企業超過90%的設計施工任務和全球60%冶金建設任務，是冶金建設的“國家隊”。公司擁有遍布全球的貿易流通網絡，全球采購、全球營銷，金屬礦產品流通規模穩居國內第一。

Passage 2

本美術館以收藏、研究、展示中國近現代至當代藝術家作品為重點的國家藝術博物館，是新中國成立以后的國家文化標志性建筑。主體大樓為仿古閣樓式，黃色琉璃瓦大屋頂，四周廊榭圍繞，具有鮮明的民族建筑風格。主樓建筑面積18000多平方米 ，共有17個展覽廳，展覽總面積8300平方米。

中國美術館現收藏各類美術作品10萬余件，以19世紀末至今中國藝術名家和各時期代表作品為主，兼有部分古代書畫和外國藝術作品，同時也包括豐富的民間美術作品。

建館以來，中國美術館已舉辦數千場具有影響的各類美術展覽，反映了中國美術繁榮發展的態勢，也成為中國與國際藝術交流的重要平臺。

中國美術館也注重通過網站及“數字美術館”項目建設延展公眾服務內容和手段，網站3次改版，建成10多個美術數據庫，日益成為美術信息發布、檢索與共享平臺。

Passage 2

Scientists have found the first evidence that briny water flowed on the surface of Mars as recently as last summer, a paper published on Monday showed, raising the possibility that the planet could support life.

Although the source and the chemistry of the water is unknown, the discovery will change scientists’ thinking about whether the planet that is most like Earth in the solar system could support present day microbial life.

The discovery was made when scientists developed a new technique to analyze chemical maps of the surface of Mars obtained by NASA’s Mars Reconnaissance Orbiter spacecraft.

They found telltale fingerprints of salts that form. only in the presence of water in narrow channels cut into cliff walls throughout the planet’s equatorial region. The slopes appear during the warm summer months on Mars, then vanish when the temperatures drop. Scientists suspected the streaks were cut by flowing water, but previously had been unable to make the measurements.

Mars Reconnaissance Orbiter makes its measurements during the hottest part of the Martian day, so scientists believed any traces of water, or fingerprints from hydrated minerals, would have evaporated.

Also, the chemical-sensing instrument on the orbiting spacecraft cannot home in on details as small as the narrow streaks, which typically are less than 16 feet wide. But Ojha and colleagues created a computer program that could scrutinizeindividual pixels. That data was then correlated with high-resolution images of the streaks. Scientists concentrated on the widest streaks and came up with a 100 percent match between their locations and detections of hydrated salts.