15．One butterfly species has come back from near extinction （滅絕）and is beginning to quickly adapt to warmer weather，a new research has found．
The research，presented at the Butterfly Conservation's international conference，found that the quino checkerspot butterfly has both moved to higher，cooler altitudes and has chosen an entirely new plant on which to lay its eggs．The butterfly，once thickly settled in Mexico and California，has witnessed a sharp drop in its numbers as climate change sees temperatures in their natural habitats（棲息地）become too hot and dry for the food plant its babies eat．
Camille Parmesan，professor at Plymouth University said that while the butterfly's movement is encouraging，it also points to the need for habitat protection．If the butterflies-and potentially other species-adapt quickly enough to move to higher altitudes，it's required that healthy environments exist in those altitudes in which the butterflies can settle．It's also required that these species have corridors（走廊）by which to move to higher altitudes，so that they can avoid getting killed by roads or long stretches of developed land．
Scientists believe the quino checkerspot is the first butterfly species to change habitat and diet so quickly，but it's not the only species to be forced to adapt to climate change．A 2013 study found that，while trees aren't moving northward as quickly as scientists expected，they're instead speeding up their lifecycles，causing younger trees to replace older trees at a higher rate．Certain desert plants，on the other hand，have migrated（遷徙）surprisingly far upslope，with some moving more than 800 feet from their 1963 lowermost boundaries．
Other species aren't adapting so quickly，however．The migration patterns of many butterfly species are being changed by earlier and warmer springs-something that's happening to some bird species as well．This changed migration timing could lead to mismatches in food and weather conditions for the migrating species，with food sources that were traditionally obtainable at a migration destination hatching or blooming（開花） too early for the birds or butterflies to consume．

72．We can learn from the passage that the quino checkerspot butterflyC．
A．will be certain to die out in the very near future because of global warming
B．is suffering from a drop in its population due to cold climate
C．has moved to cooler places and chosen another food plant for its babies
D．a(chǎn)dapts well to their natural habitats in Mexico and California
73．How is Paragraph 3 mainly developed？A
A．By making lists．
B．By using examples．
C．By analyzing causes．
D．By making comparisons．
74．In response to warmer temperatures，the trees areA．
A．quickening their birth and death rates        
B．the only species to be forced to move uphill
C．moving northward as quickly as scientists expected
D．moved to cooler places at a rate of 800feet per decade
75．According to the last paragraph，when the species arrive at the migration destination，they mightC．
A．lay their eggs too early                 
B．suffer from severe diseases
C．have no food sources                 
D．change weather conditions．

分析 一項新的調(diào)查研究表明，一種瀕臨滅絕的蝴蝶物種開始回歸到正常數(shù)量并開始迅速適應(yīng)更加溫暖的氣候．

解答 CAAC
72．答案 C  細(xì)節(jié)理解題．由第二段第一句 the quino checkerspot butterfly has both moved to higher，cooler altitudes and has chosen an entirely new plant on which to lay its eggs 可知，the quino checkerspot butterfly 搬到了更高更寒冷的維度生活并且在一種之前它們從來沒有用過的植物上產(chǎn)卵，故正確答案為C．
73．答案 A 主旨大意題．第三段采用總分結(jié)構(gòu)，第一句先指出 it also points to the need for habitat protection，然后接下來兩句 it's required that…It's also required that 分別闡述 the need for habitat protection，顯然是羅列論據(jù)．C項易錯，cause 意為"起因"，雖然也譯作"原因"，但指的是直接導(dǎo)致一事物發(fā)生的另一事物，而本段第二、三句則是在闡述依據(jù)、論據(jù)、理由，與 cause 所表示的起因或原因不是同一回事．本段沒有舉例子，也沒有作對比，由此排除B、D項．故正確答案為A．
74．答案 A 細(xì)節(jié)理解題．由第四段第二句 they're instead speeding up their lifecycles，causing younger trees to replace older trees at a higher rate 可知，樹木加快了它們的生命周期，使新老更替更加快速，與A項表意一致，故正確答案為A．
75．答案 C  細(xì)節(jié)理解題  根據(jù)最后一段最后一句 with food sources that were traditionally obtainable at a migration destination hatching or blooming too early for the birds or butterflies to consume 可知，原來可以獲得的食物資源可能會因開花結(jié)實過早而不能供鳥或蝴蝶食用了，故當(dāng)物種遷徙至新的棲息地時可能會面臨沒有食物來源的困難，與C項表意一致，故正確答案為C．

點評 1、瀏覽．瀏覽的主要目的就是確定文章的體裁．如果文章屬于人物傳記、記敘文、故事、科普小品和有關(guān)社會文化、文史知識的文章，一般來說，應(yīng)該先看看文章的試題考查內(nèi)容，對題目類型做到心中有數(shù)，針對不同問題，在通讀時有粗有細(xì)地去閱讀，這樣不僅能把握篇章的基本結(jié)構(gòu)和邏輯線索，也能做好有關(guān)具體事實信息考查的試題．
2、挖掘寓意，掌握中心思想，推出結(jié)論．任何文章，作者在行文時都有一定的寫作目的和主要話題．在通讀篇章時應(yīng)該吃透作者的寫作意圖，抓住文章的主題句，充分發(fā)揮自己的想象力和概括力，作出對中心思想的歸納和結(jié)論的推斷．
3、把握篇章結(jié)構(gòu)，利用上下文進(jìn)行推測．高考中的閱讀理解篇章往往是一個較完整的短文，其結(jié)構(gòu)、思想，前后上下連貫統(tǒng)一．考試時應(yīng)充分利用這一特點推測一些生詞、短語在句中的含義，切莫盲目孤立猜測．
4、綜觀全篇，前后呼應(yīng)．這是閱讀理解的最后一步，在做完閱讀理解題后，要立足于文章整體，再迅速讀一遍短文，短文中的問題和答案的設(shè)置前后都是相關(guān)聯(lián)的，有著一定的連續(xù)性，體現(xiàn)著文章的基本脈絡(luò)．

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