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                                                                                                   瞬息与永恒的舞蹈
                                                                                                              张抗抗
        ①那盆昙花养了整整六年,仍是一点动静没有。年复一年,它无声无息地蛰伏着,除了枝条日甚一日的蓬勃,别无吐蕾开花的迹象。怜它好歹是个生命,不忍丢弃,只好把它请到阳台上去,找一个遮光避风的角落安置了,只在给别的盆花浇水时,捎带着用剩水敷衍它一下。心里早已断了盼它开花的念想,饥一餐饱一顿地,任其自生自灭。
         ②一个夏天的傍晚。我再次走上阳台,去给冬青浇水,然后弯下腰为冬青掰下了一片黄叶。忽然有一团鹅黄色的绒球,从冬青根部的墙角边钻出来,闪入了我的视线。我几乎被那团鸡蛋大小的绒球吓了一大跳:那不是绒球,而是一枝花苞——昙花的花苞,千真万确。
        ③昙花入室,大概是下午六点左右。它就放在房间中央的茶几上,天色一点点暗下来。那一枝鹅黄色的花苞渐渐变得明亮。晚七点多钟的时候,它忽然颤栗了一下,颤栗得那么强烈,以至于整盆花树都震动起来。就在那个瞬间里,闭合的花苞无声地裂开了一个圆形的缺口,喷吐出一股浓郁的香气,四散溅溢。它的花蕊是金黄色的,沾满了细密的颗粒,每一粒花粉都在传递着温馨呢喃的低语。那橄榄形的花苞渐渐变得蓬松而圆融,原先紧紧裹挟着花瓣的丝丝淡黄色的针状须茎,如同刺猬的毛发一根根耸立起来,然后慢慢向后仰去。在昙花整个开启的过程中,它们就像一把白色小伞的一根根精巧刚劲的伞骨,用尽了千百个日夜积蓄的气力,牵引着、支撑着那把小伞渐渐地舒张开来。
         ④现在它终于完完全全绽开了,它更像一位美妙绝伦的白衣少女,赤着脚从云中翩然而至。从音乐奏响的那一刻起,“她”便欣喜地抖开了素洁的衣裙,开始那一场舒缓而优雅的舞蹈。“她”知道这是自己多年来一直期盼的一次公开演出,只许成功,不能失败,虽然是初次登台,但是她的每一个动作都娴熟完美,昙花于千年岁月中修炼的道行,已给“她”注入了一个优秀舞者的遗传基因,使得“她”婀娜轻柔的舞姿带有一种动人心魄的绝美。
        ⑤这一场动人心弦的舞蹈,持续了两个多小时。“她”悄然无声地一边舞着,一边用自己身体内多年存储的精华,尽情演绎着生命的辉煌,挥洒着成功的芳香。
        ⑥盛开的昙花就那么静静地悬在枝头,像一帧被定格的胶片。
        ⑦但昙花的舞蹈并未就此结束。“她”忽然又颤动了一下,张开的手臂,渐渐向心口合抱;“她”用修长的指尖梳理着金发般的须毛,又将白色的裙衫一片片收拢;然后垂下“她”白皙的脖颈,向泥土缓缓地匍匐下去。
        ⑧“她”平静而庄严地做完这全套动作,大约用了三个小时——那是舞蹈的尾声中最后复位的表演。昙花的开放是舞蹈,闭合自然也是舞蹈。片片花瓣根根须毛,从张开到闭合,每一个动作都一丝不苟。“她”用轻盈舒缓的舞姿最后一次阐释艺术和生命的真谛。
        ⑨我很久很久地凝望着它,满怀歉意地观赏着昙花从帷幕拉开、尽情绽放到舞台定格的全部过程。“昙花一现”那个带有贬义的古老词语,在这个偶然的夏夜里变成一种正在逝去的遥远回声,给予我新的启示。
        ⑩那个傍晚的阳台,那一场绝美的舞蹈中,我是唯一幸运的陪伴者。想起我多年来对昙花的冷落和敷衍,愧恨之情油然而生。此后,我将用清水和阳光守候那绿色的舞台,等待它明年再度巡回。                      (选自《世纪经典散文》,有删改)

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    Plants are flowering faster than scientists predicted(预测)in reaction to climate change, which could have long damaging effects on food chains and ecosystems.

    Global warming is having a great effect on hundreds of plant and animal species around the world, changing some living patterns, scientists say.

    Increased carbon dioxide(CO2)in the air from burning coal and oil can have an effect on how plants produce oxygen, while higher temperatures and changeable rainfall patterns can change their patterns of growth.

    “Predicting species' reaction to climate change is a major challenge in ecology,” said the researches of several U.S. universities. They said plants had been the key object of study because their reaction to climate change could have an effect on food chains and ecosystem services.

    The study, published on the Nature website, uses the findings from plant life cycle studies and experiments across four continents and 1,634 species. It found that some experiments had underestimated(低估)the speed of flowering by 8.5 times and leafing by 4 times.

    “Across all species, the experiments under-predicted the speed of the advance — for both leafing and flowering — that results from temperature increases,” the study said.

    The design of future experiments may need to be improved to better predict how plants will react to climate change, it said.

    Plants are necessary for life on the Earth. They are the base of the food chain, using photosynthesis(光合作用)to produce sugar from carbon dioxide and water. They let out oxygen which is needed by nearly every organism on the planet.

    Scientists believe the world's average temperature has risen by about 0.8℃ since 1900, and nearly 0.2℃ every ten years since 1979.

    So far, efforts to cut emissions(排放)of planet-warming greenhouse gases are not seen as enough to prevent the Earth heating up beyond 2℃ this century — a point scientists say will bring the danger of a changeable climate in which weather extremes are common, leading to drought, floods, crop failures and rising sea levels.