GMAT閱讀機(jī)經(jīng)整理：Caterpillar.

　　3月2日換庫(kù)后，小編為大家整理這個(gè)月的GMAT閱讀機(jī)經(jīng)，這篇GMAT閱讀機(jī)經(jīng)是關(guān)于Caterpillar的文章，考生朋友可以看看，下面的內(nèi)容為考古內(nèi)容，分享給大家，希望對(duì)大家有所幫助，文中觀點(diǎn)僅供參考。

　　[V1]

　　有一篇講熱帶雨林的caterpillar.說caterpillar population fluctuation是因?yàn)槭裁? 下一段還提到了一種neural p.. virus(有討論這個(gè)東西對(duì)population的影響)

　　[V2]

　　閱讀還考了那個(gè) 蝴蝶life cycle的，就是population有一個(gè)cycle。

　　[V3]

　　考了一種動(dòng)物的population cycle。機(jī)經(jīng)上有。就是不是因?yàn)椴妒痴叨鴮?dǎo)致的，是一種virus導(dǎo)致的，這種virus會(huì)存活啥的啥的。

　　考古已確認(rèn)(原題，連題目都一樣!)(還是提醒大家，注意變體!!)

　　老新觀點(diǎn)

　　1P: population cycle, identify driving force, however, surprising elusive. Common approach unproductive; ecologist’s attempt, not succeed. In short, population regulated by intimated connected with insects.

　　2P: recent work suggest virus. Contributed to. Recent work made possible by new techniques. NP hypothesized because…

　　3P: attractions of hypothesis is ….

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　　T-9-20:GWD-13-34:

　　Which of the following, if true, would most weaken the author’s conclusion in lines 25-30?

　　A. New research reveals that the number of species of birds and parasites that prey on lepidoptera has dropped significantly in recent years.

　　B. New experiments in which the habitats of lepidoptera are altered in previously untried ways result in the shortening of lepidoptera population cycles.

　　C. Recent experiments have revealed that the nuclear polyhedrosis virus is present in a number of predators and parasites of lepidoptera.

　　D. Differences among the habitats of lepidoptera species make it difficult to assess the fects of weather on lepidoptera population cycles.

　　E. Viral disease is typically observed in a large proportion of the lepidoptera population.

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　　T-9-21:GWD-13-35:

　　It can be inferred from the passage that the mortality caused by agents such as predatory birds or parasites was measured in an attempt to

　　A. develop an explanation for the existence of lepidoptera population cycles

　　B. identify behavioral factors in lepidoptera that affect survival rates

　　C. identify possible methods for controlling lepidoptera population growth

　　D. provide evidence that lepidoptera populations are self-regulating

　　E. determine the life stages of lepidoptera at which mortality rates are highest

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　　T-9-22:GWD-13-36:

　　The primary purpose of the passage is to

　　A. describe the development of new techniques that may help to determine the driving force behind population cycles in Lepidoptera

　　B. present evidence that rutes a particular theory about the driving force behind population cycles in Lepidoptera

　　C. present a hypothesis about the driving force behind population cycles in Lepidoptera

　　D. describe the fluctuating patterns of population cycles in Lepidoptera

　　E. question the idea that a single driving force is behind population cycles in Lepidoptera

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　　T-9-23:GWD-13-37:

　　According to the passage, bore the discovery of new techniques for detecting viral DNA, population ecologists believed that viral diseases

　　A. were not widely prevalent among insect populations generally

　　B. affected only the caterpillar life stage of lepidoptera

　　C. were the driving force behind lepidoptera population cycles

　　D. attacked already declining caterpillar populations

　　E. infected birds and parasites that prey on various species of Lepidoptera

　　一種飛蛾，他們的數(shù)量有周期性的變化。但是一開始，科學(xué)家用常規(guī)的方法都沒有測(cè)量出來引起周期性變化的原因，既不是生存地的條件，也不是捕食者的數(shù)量。后來科技發(fā)展，科學(xué)家發(fā)現(xiàn)應(yīng)該是一種病毒。這個(gè)病毒會(huì)保存在一種晶體里面，晶體被飛蛾吃掉后，外殼就融化，然后病毒在飛蛾體內(nèi)繁殖，同時(shí)包裹上晶體，等飛蛾死掉，那些晶體就落在土壤里了。然后這個(gè)發(fā)現(xiàn)很有意義，因?yàn)楹芏鄤e的種類的飛蛾也可能是這個(gè)原因

　　以上就是關(guān)于Caterpillar這篇GMAT閱讀機(jī)經(jīng)的全部?jī)?nèi)容，考生可以有選擇的看看，機(jī)經(jīng)雖好，但是也要適度喲。最后祝大家都能考出好成績(jī)。