The Magnetic Sense-The Living Compass | |
Passage outline | Supporting details |
The existence of the earth magnet and the invention of the navigating compass | ◇Our earth is a big magnet and a little freely (71)swinging magnetic needle lines itself with the earth magnet to point north and south. ◇(72)Basedon the idea above,the navigating compass was invented. |
The possibility of birds'built-in compasses | ◇One piece of evidence is the (73)migrationof many birds between their summer homes and winter homes. ◇Birds can recognize star patterns on clear nights and keep on course (74)even under cloudy skies |
The (75)experiments/tests/study/research on pigeons'and bees'built-in compasses | ◇Little magnets were tied to the pigeons'heads to (76)block their magnetic sense. ◇The pigeons'magnetic sense seemed to be affected on (77)cloudydays. ◇Similar things with the same results were done with bees. |
The (78)discovery of the magnetic stuff for the animal compass | ◇Little rod-like bacteria were found by chance to swim together in the direction of (79)north. ◇Some animals had a chain of dense magnetic particles in or close to the (80)brain(s) inside their bodies. |
分析 本文是一篇說明文,科學(xué)家們一直在尋求理解關(guān)于方向的"第六感"的神秘面紗.一個滑稽的想法是動物身體內(nèi)部也許有一個固定指南針.人們發(fā)明指南針的想法也是源于觀察自然界的動物的規(guī)律.自然界有些動物每年遷徙兩次大都數(shù)時間在晚上或多云的時候,他們能沿著保持固定的航線是怎么做到的呢?家鴿能很好地找到回家的路以及蜜蜂也有著很好地方向感,池塘里的細(xì)菌也會成隊地游走,這一切的解釋可能都是由于,動物體內(nèi)或大腦附近有磁體.
解答 71.swinging 詞性轉(zhuǎn)換.根據(jù)第三段"a little magnetic needle thatswings freely lines"把定語從句轉(zhuǎn)換成現(xiàn)在分詞短語修飾名詞needle.故填swinging.
72.Based 同義轉(zhuǎn)換.根據(jù)第三段"When peoplediscovered that idea about a thousand years ago and invented the compass"說明人們是根據(jù)這個原理發(fā)明了指南針.Be based on…以…為基礎(chǔ).故填Based.
73.migration 詞性轉(zhuǎn)換.根據(jù)第六段Many birds migrate twice a year中的動詞migrate轉(zhuǎn)換成名詞,故填migration.
74.even 原詞再現(xiàn).根據(jù)第三段最后一句it allowed sailors tonavigate (航海)on ocean voyages,even under cloudy skies.中的even.故填even.
75.experiments/tests/study/research 根據(jù)文章第7,8段"One interesting experiment"可知是對鴿子和蜜蜂身上做的實驗.故填experiments/tests/study/research.
76.block 原詞再現(xiàn) 根據(jù)It was as if the magnets had blockedtheir magnetic sense.故填block.
77.cloudy 原詞再現(xiàn).根據(jù)第六段"But on cloudy days,the pigeons with magnetscould not.",故填cloudy.
78.discovery 推理題.根據(jù)文章倒數(shù)第四段How would an animal get themagnetic stuff for a compass.可知,接下來的幾段都是講述實驗的發(fā)現(xiàn).故填discovery.
79.north 原詞再現(xiàn).根據(jù)倒數(shù)第三段最后一行"that all swam together in one direction-north.",故填north.
80.brain(s) 原詞再現(xiàn).根據(jù)文章倒數(shù)第二行"the magnetic stuff wasalways in or closer to the brain.",故填brain(s).
點(diǎn)評 本題考查任務(wù)型閱讀題型.解答此類題型的步驟:預(yù)測與確立文章主題,了解圖表縱橫框架結(jié)構(gòu),預(yù)測文章文脈內(nèi)容.略讀:快速瀏覽全文,結(jié)合圖表理清文章基本結(jié)構(gòu)與文脈.掃讀:獲取文章主要信息.細(xì)讀:分析整合信息、準(zhǔn)確表達(dá).復(fù)查:通觀全篇,復(fù)讀檢查.同時注意語法:字母大小寫、名詞的數(shù)和格、詞性等方面.
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