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阅读理解之史地常识类(共3篇,限时22分钟)a(2013辽宁大连双基测试)under the cold clear water of lake huron, researchers have found a fiveandahalffootlong piece of wood that is 8,900 years old. the wood, which is tapered (使成锥形) on one side in a way that looks deliberate, may provide important clues to a mysterious period in north american prehistory.“this was the stage when humans gradually shifted from hunting large animals to fishing, gathering and agriculture,” said anthropologist john oshea. “but because most of the places in this area that prehistoric people lived in are now under water, we dont have good evidence of this important shift itself. we just have clues from before and after the change.”with support from the national science foundation (nsf) and the national oceanic and atmospheric administration (noaa), oshea and his colleague guy meadows began exploring the area several years ago. in 2009 they reported finding a series of stone features that they believe were “drive lanes” used by ancient indian hunters.since that discovery, oshea and meadows have worked on identifying human campsites, which are typically located away from hunting areas. on their 25foot boat, the researchers first spotted the ancient wood object using a small piece of equipment with a camera. then a team of divers including oshea went down about 100 feet to get it.the woods age has now been fixed by means of carbon dating. it is currently undergoing more detailed analyses to determine whether there has been human modification, which visual examination suggests. “the first thing you notice is that it appears to have been shaped with a rounded base and a pointed tip,” oshea said. “it must have been created. it looks like it might have been used as a tent pole or a pole to hang meat.”in addition to the wood, the researchers have collected many other samples from the bottom of the lake. oshea and his colleagues will need to wait for calmer weather before they can resume their search for evidence of human life under the great lake.语篇解读:考古学家们的新发现有望印证远古人类从游猎文明到农耕文明的转变。1during the mysterious period mentioned in the passage, the lake huron area _.awas deserted by ancient indiansbwitnessed the start of agriculturecwas taken up by large animalsdbegan to be covered by water解析:选b推理判断题。从第一、二段的“. may provide important clues to a mysterious period in north american prehistory . when humans gradually shifted from hunting large animals to fishing, gathering and agriculture”可知b项正确。2whats the fourth paragraph mainly about?ahow the wood was found.bwhy the wood is important.cpreparations that were made for the discovery of the wood.dconclusions the experts have made from the discovery of the wood.解析:选a主旨大意题。本段主要交代了 john oshea 和同事们从何时开始使用何种方法找到了这块木头。3according to the passage, _.aexperts havent found out the age of the woodbexperts first noticed the wood when they were divingcthe wood was probably a humanmade tooldthe wood is the most important discovery among all the samples found under the lake解析:选c推理判断题。从第五段的最后一句可知c项正确。4what do we know about the future plan of john oshea and his colleagues?athey will explore another lake soon.bthey will study the weather around lake huron.cthey will have a long holiday before going back to work.dthey will continue to explore lake huron.解析:选d细节理解题。从文章最后一句可知答案。b(2013天津和平区二模)100 years after the sinking of the titanic, experts are still debating what caused the tragedy. now, new research by british historian tim maltin points to an unusual optical illusion (视错觉) that may have hidden the iceberg that caused the titanics deadly crash.maltin read weather records from survivors and the ship logs to research his theory. the titanic sailed from warm gulf stream waters into the freezing labrador current. there, the air column was cooling from the bottom up, creating layers of cold air below layers of warmer air. this is called a thermal inversion (逆温)“the thermal inversion,” maltin says, “caused light to refract (折射), abnormally downward.” the refraction created a mirage (海市蜃楼): objects appeared higher and therefore nearer than they actually were, before a false horizon.the area between the false horizon and the real horizon appeared as haze (霾). the iceberg was hidden in the haze, so those aboard the titanic didnt see it until the ship was about to collide with it. as titanic first officer william mcmaster murdoch recalled, “that iceberg came right out of the haze.” but by that time, the titanic was too close to avoid hitting it.shortly before the titanic hit the iceberg, it sailed into the view of another ship, the californian. but the refraction of the light made it appear too near and too small to be the titanic the largest ship in the world at the time. the californian signaled to the titanic by the morse lamp, which uses flashes of light to send signals. the titanic, now in trouble, also signaled to the californian by the morse lamp, but the thermal inversion disrupted the signals. the titanic finally sank at 2:20 am local time on april 15.although some experts agree with maltins theory, others say the titanic sank simply because it ignored several warnings of heavy ice and because it was going too fast in dangerous waters. whatever the cause, people remain fascinated with the titanic, and researchers and historians will likely come up with new theories for years to come.语篇解读:本文是一篇说明文。英国一位历史学家最新研究发现:一个非同寻常的视错觉海市蜃楼,是让泰坦尼克号撞上冰山并且未能获得附近船只救援的原因。5according to tim maltins new research, _may have been the cause of titanics tragedy.aextremely terrible weather conditions at seaban unusual visual illusion caused by a thermal inversioncfirst officer williams wrong direction judgementdsailing too fast in dangerous waters解析:选b细节理解题。根据第一、二段内容可知,tim maltin的研究发现,一种由逆温造成的不寻常的视错觉导致了泰坦尼克号悲剧的发生,故答案为b项。6why did the californian fail to come to the titanics rescue?athe californian didnt successfully signal to the titanic.bthe titanic didnt understand the signals.cthe titanic signaled back to the californian by a wrong morse lamp.dthe californian didnt successfully receive the titanics response.解析:选d细节理解题。根据倒数第二段倒数第二句可知,泰坦尼克号也用摩尔斯信号灯回应了加利福尼亚号,但是,逆温扰乱了这些信号,使加利福尼亚号没有收到泰坦尼克号的回应,故答案为d项。7what does the underlined word “disrupted” in paragraph 5 most probably mean?adisturbedbreceivedcpredicted dspread解析:选a词义猜测题。根据倒数第二段可知,加利福尼亚号轮船用摩尔斯信号灯向泰坦尼克号发出信号,泰坦尼克号也用摩尔斯信号灯回应了加利福尼亚号。但是,逆温“扰乱”了这些信号,disturbed意为“干扰,妨碍”,意思最为贴近,故答案为a项。8if a mirage forms, one may have a visual illusion that _ before a false horizon.aa slow ship seems to be sailing at a high speedba ship on the sea seems to be sailing in the skyca ship sailing far away appears much nearer than it really isda faraway ship seems to be sailing upside down解析:选c细节理解题。根据第三段内容可知,海市蜃楼现象会使物体在一个假的地平线前面,从而显得比实际情况更高、更近,故答案为c项。9from the passage we can draw the conclusion that _.athe titanic had hardly hit the iceberg when it almost crashed into another shipbthe titanic didnt receive any warnings of heavy ice in advancecthe californian was sailing too far away to come to the titanics rescuedthe californian didnt believe it was the titanic that was sailing there解析:选d推理判断题。根据倒数第二段第二句可知,光的折射使泰坦尼克号显得太近太小,根本不像是当时世界上最大的轮船,所以d项正确。c(2013黑龙江哈九中二模) with the average temperature for january standing at 50, it is no wonder the russian village of oymyakon is the coldest permanently inhabited settlement in the world. known as the “pole of cold”,the coldest ever temperature recorded in oymyakon is 71.2. this is the lowest recorded temperature for any permanently inhabited location on earth and the lowest temperature recorded in the northern hemisphere (北半球)ironically, oymyakon actually means “nonfreezing water” due to a nearby hot spring. most homes in oymyakon still burn coal and wood for heat and enjoy few modern conveniences.nothing grows there so people eat reindeer (驯鹿) meat and horsemeat. a single shop provides the towns bare necessities and the locals work as reindeerbreeders, hunters and icefisherman.there are few modern conveniences in the village with many buildings still having outdoor toilets and most people still burn coal and wood for heat. when coal deliveries are irregular, the power station starts burning wood. if the power ceases, the town shuts down in about five hours, and the pipes freeze and crack.daily problems that come with living in oymyakon include pen ink freezing, glasses freezing to peoples faces and batteries losing power. locals are said to leave their cars running all day for fear of not being able to restart them. even if there was coverage for mobile phone reception, the phones themselves would not work in such conditions.another problem caused by the frozen temperatures is burying dead bodies, which can take anything up to three days. the earth must first have thawed (融解) sufficiently in order to dig it, so a bonfire is lit for a couple of hours. hot coals are then pushed to the side and a hole couple of inches deep is dug. the process is repeated for several days until the hole is deep enough to bury the coffin.travel companies offer tourists the opportunity to visit the village and sample life in the freezing conditions.语篇解读:俄罗斯的奥伊米亚康村庄一月份的平均气温达到零下50摄氏度,是全球最寒冷的永久居住点。10oymyakon gets its name because _.ait is extremely cold therebits water is nonfreezingcthere is a hot spring nearbydit is known as the “pole of cold”解析:选c细节理解题。根据第二段的第一句话“ironically, oymyakon actually means nonfreezing water due to a nearby hot spring.”可知,它是因附近的一个温泉而得名。11from the passage we can infer that people in oymyakon _.apref
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