题干

阅读理解

    A. High tech with traditional life at Green Bank.

    Over millions of years, penguins(企鹅)have developed a keen sense of where to find food. Once they're old enough, they set off from the shores on which they were hatched for the first time and swim long distances in search of tasty fish like anchovies and sardines. But they don't search directly for the fish themselves.

    For example, when young African penguins head out to sea, they look for areas with low surface temperatures and high chlorophyll(叶绿素) because those conditions signal the presence of phytoplankton(浮游植物). And lots of phytoplankton means lots of plankton(浮游动物), which in turn means lots of their favorite fish. Well, that's what it used to mean.

    Climate change plus overfishing have made the penguin feeding grounds a mirage(海市蜃楼). The habitat is indeed plankton-rich—but now it's fish-poor. Researchers call this an “ecological trap.”

    “It's a situation where you have a signal that previously pointed an animal towards good quality habitat. That habitat's been changed, usually by human pressures. The signal stays, but the quality in the environment deteriorates.”

    Richard Sherley, a zoologist at the University of Exeter and his team used satellite imaging to track the African penguins from eight sites along southern Africa. Historically, the birds benefited from tons of fish off the coasts of Angola, Namibia and western South Africa, but now they're going hungry.

    “I was really hoping we'd see them going east, and finding areas where the fish had moved to but it ends up being quite a sad story for the penguins.” said Richard.

    The researchers calculate that by falling into this ecological trap, African penguin populations on South Africa's Western Cape have declined by around 80 percent.

    Some research groups are exploring the idea of moving chicks to a place where they can't get trapped, like the Eastern Cape. But Sherley thinks that a longer-term solution means making and carrying out rules to create more sustainable(可持续的) fishing industry, something that he says needs public support.

上一题 下一题 0.0难度 选择题 更新时间:2018-09-11 04:35:21

答案(点此获取答案解析)

同类题1

阅读下面的文言文,完成小题。

    薛居正字子平,开封浚仪人。父仁谦,周太子宾客。居正少好学,有大志。清泰初,举进士不第,为《遣愁文》以自解,寓意倜傥,识者以为有公辅之量。逾年,登第。汉乾祐初史弘肇领侍卫亲军威权震主残忍自恣无敢忤其意者其部下吏告民犯盐禁法当死狱将决,居正疑其不实,召诘之,乃吏与民有私憾,因诬之,逮吏鞫之,具伏抵法。弘肇虽怒甚,亦无以屈。周广顺初,迁比部员外郎,领三司推官,旋知制诰。周祖征兖州,诏居正从行,以劳加都官郎中。显德六年,使沧州定民租。未几,以材干闻于朝,擢刑部侍郎。宋初,迁户部侍郎。建隆三年,入为枢密直学士,知贡举。初平湖湘,以居正知朗州。会亡卒数千人聚山泽为盗,监军使疑城中僧千余人皆其党,议欲尽捕诛之。居正以计缓其事,因率众翦灭群寇,擒贼帅汪端,诘之,僧皆不预,赖以全活。乾德初,加兵部侍郎。车驾将亲征太原,大发民馈运。时河南府饥,逃亡者四万家,上忧之,命居正驰传招集,浃旬间民尽复业。开宝八年二月,上谓居正等曰:“年谷方登,庶物丰盛,若非上天垂佑,何以及斯。所宜共思济物,或有阙政,当与振举,以成朕志。”居正等益修政事,以副上意焉。太平兴国六年,因服丹砂遇毒,方奏事,觉疾作,遽出。至殿门外,饮水升余,堂吏掖归中书,已不能言,但指庑间储水器。左右取水至,不能饮,舆归私第卒,年七十。居正气魄瑰伟,饮酒至数斗不乱。性孝行纯,居家俭约。为相任宽简,不好苛察,士君子以此多之。自参政至为相,凡十八年,恩遇始终不替。

(选自《宋史·薛居正传》,有删改)

同类题3

阅读下面的短文,并根据短文后的要求答题。

    [1]China's “four great new inventions” in modern times have made the daily life of the public more and more convenient. They are the high-speed railway(HSR), shopping online, shared bikes and mobile phone payment.

    [2]Living in Hong Kong, I knew them from the papers, the TV and the Internet. But last month I had the chance to experience all of them.

    [3]As usual, the golden week stopped the traffic. It was hard to get a railway ticket anywhere in the train stations. But I bought a train ticket to Beijing on the Internet and paid for it through Zhifubao. It was even cheaper than it was bought in the station. Then we got on the high-speed train. I was shocked at its speed and quietness. There was no noise which the train made while running. It was reported that China has the longest high-speed railway in the world, which is regarded as a “name card” for China.

    [4]China's HSR has also gone abroad. In 2014, China finished building its first foreign high-speed rail in Turkey. In June 2015, China and Russia agreed to build the 770 km of high-speed railway connecting Moscow and Kazan. In October 2015, China helped Indonesia to build a high-speed rail between Jakarta and Bandung.

    [5]Did I feel bored during the trip on the train? Not at all. I bought many cheap and good things in Taobao and Tmall on the Internet through my mobile phone. It's amazing that there are oceans of products in Taobao and Tmall.        [6]Soon we arrived in Beijing. We got on a bus near the train station.     getting off the bus, my friend told me that the bus stop is far from his home. I thought we would have to spend much money going to his home on a taxi, but it seemed that he wasn't worried about that. He showed me some bikes on the side of the street. They are called shared bikes. We only need to use our mobile phones to scan(扫描) the QuickResponse code(二维码) on shared bikes, then we could ride the bikes anywhere we wanted to go. It was so cool!

同类题4

阅读下文,回答问题

乌镇的时光

岑亚芳

    关于旅行的去处,我一直偏好古镇,仿佛总有些割舍不掉的心绪,觉得那里还生活着原先,还能看得到旧时的月色,还有一些被称作回忆的东西。

    去乌镇是几个月前的事了。到西柵的时候临近傍晚,阳光穿过深深的巷子,落在廊桥上,长青藤的叶子像玉石般晶莹剔透,时间仿佛在这一刻静止下来,我惊艳于逆光下这唯美的景象。居然忘了要拿背包里的相机。

    预订的民宿临水而筑,我的那间还有个小小的阳台,两把藤椅,一张小几、放着青花瓷茶具,倒也清雅别致。简单整理了下,摄友们便各自出发寻找美景去了。相较于一大群人聚集在一处猛拍出来的照片千篇一律,我倒是更喜欢这种方式。每个人心中都有一个不一样的乌镇,表现手法也各不相同。而我,更愿意闲散地四处走走,感受小镇特有的韵味。

    西栅果然有一种与众不同的美,这种美是大气的,沉稳的,朴素的。在这里,找不到一处西塘那样灯红酒绿的颜色,就是路灯,也是最简朴的灰白色调。青藤从斑驳的墙面垂下来,谁家的屋沿下,还挂着开满小花的盆栽?凹凸的青石板路蜿蜒而前,路面却非常干净,干净得好像我不是走在旅游景点中,而是在穿越一段长长的旧日时光,思绪很容易就陷入飘渺中去了。

    西栅是个充满诗情画意的地方。这里的小巷,石桥,河道,青瓦白墙.雕花木门,还有廊桥下长长的美人靠不知不觉,就会把你的脚步带入深远的记忆。沿街也有不少的商铺,从吃的到用的都齐全,却绝没有嘈杂的喧嚣。你可以进去看,没有人向你兜售什么,仿佛它的存在就是一种展示,喜欢,可以带走;不喜欢,它还在那里,静静地封存着一段不为人知的岁月。街上有个乌镇邮局,青砖外墙,乌漆墨黑的邮筒。走到这里,时光一下子倒退了百十年,脑海中突然闪现这样的画面:藕色的斜襟上衣、黛蓝的长裙,女孩撑着油纸伞,抿嘴轻笑……呵!那一个,丁香一样结着愁怨的姑娘!她翻起人们多少美好的遐想!我特别喜欢那些小小的书店和里面挂着的照片。照片都是当地的摄影师拍的。乌镇的春夏秋冬、暮色晨景,每一帧都是极美的画卷。聪明的人们把它们制成明信片发行,填好地址马上可以寄出去。我挑了几张,却没有邮寄。营业员帮我简单包装了下。素色的纸上印着他们的LOGO—“当年”,不经意间心又被轻轻地拨动了。

    就这样边走边摄,看两岸枕河人家,人们三五成群坐在窗前品茶喝酒,怡然自得。不断有桨声划过水面,摇碎了老屋和桥的影子。晚风吹来,空气里分明带着清新的自由和欢快。

    这样的时光很容易过去,等发现肚饿的时候,已是七点多了。民宿的饭菜都需要预约,也再没有空的桌子可以腾出来给我们了。结果,几个人只好走进一家茶楼,在月光和蕉叶下静静地享用了晚餐。

    夜深了,大部分游人已散去,我们又去拍了几张夜景.月色朦胧,灯光朦胧,露天电影已经散场。

    第二天坐船出来时,摄友们讨论此次拍摄的过程。我拿出包里的明信片给他们看。都说,这样的片子其实我们也可以拍出,只是,作者生活在这里, 一草一木再熟悉不过;而我们之于她,只是红尘中一行色匆匆的过客…

    是的, 也许那个晚上我们错过了最佳的摄影时间,也错过了一场可能非常好看的露天电影,好在并没有错过第二天的晨曦。当阳光笼着枕水人家、古拙的石桥、轻轻摇过的乌篷船,那种宁静、恬淡、惬意悄悄温润了身上每一个细胞。

    现在回想起来,仍然觉得在乌镇的时光非常美好。

(选自《散文百家》2015年第3期)