【文章內(nèi)容簡(jiǎn)介】 are discovering that the very fear they put into prey（被捕食者）species is exactly what helps make ecosystems（生態(tài)）healthy. Yellowstone National Park is a typical example of just how wolves can help repair an ecosystem. An October 2018 study analyzed 40 years of research on large animals inside the park. Yellowstone has benefited from the reintroduction of wolves in ways that we did not anticipate, especially the plexity of biological interactions（互動(dòng)） in the park, explained Mark Boyce, a professor in the Department of Biological Sciences. We were really surprised at that and we39。d never have seen these responses if the park hadn39。t adopted ecologicalprocess management—allowing natural ecological processes to take place with least human intervention. After the wolves were reintroduced at Yellowstone, willow and cottonwood trees increased in number. The population of bears and bison also rose and what was once a ruling deerwolf interaction is now more diverse. To learn more about just how wolves are beneficial, a short documentary from Quest explains how the presence of wolves influences the behavior of deer, which eventually makes entire ecosystems more biologically diverse and healthy. In this documentary, biologist Aaron Wirsing explored why wolves and other top predators （捕食者）were needed for diverse ecosystems to develop. Using a simple video camera, Wirsing is gaining a unique view point on predatorprey relationships and changing the way we think about wolves. The research is one more piece of evidence for why protecting these top predators is important not just for wolves as a species, but for hundreds of species at every level of an ecosystem. The fear they bring along may be the very angle that helps save them from dying out.（1）What does the underlined word anticipate in paragraph 3 probably mean? A.Expect.B.Understand.C.Notice.D.Accept.（2）For what purpose was a documentary made? A.To introduce how wolves behave in the wild.B.To show how wolves benefit from ecosystems.C.To record how Aaron Wirsing observed wolves.D.To study what good wolves can do to ecosystems.（3）What is the significance of the research? A.It proves wolves feed on hundreds of species.B.It helps prove the importance of protecting wolves.C.It shows the plex relationships between species.D.It provides evidence that wolves are endangered animals.（4）What is the main idea of the passage? A.The fear of wolves is beneficial to ecosystems.B.The fear of wolves put them in danger of disappearing.C.Yellowstone National Park owes its healthy ecosystems to wolves.D.The introduction of wolves in Yellowstone National Park is a success.【答案】 （1）A（2）D（3）B（4）A 【解析】【分析】本文是一篇說(shuō)明文，研究表明人類(lèi)以及其他動(dòng)物對(duì)狼的恐懼對(duì)維持健康、平衡的生態(tài)系統(tǒng)是有益的，其中黃石公園灰狼的引進(jìn)就是一個(gè)典型的例子。 （1）考查詞義猜測(cè)。根據(jù)第三段中的We were really surprised at that可知，黃石公園在意想不到的方面從重新引入狼中獲益。故選A。 （2）考查細(xì)節(jié)理解。根據(jù)第五段中的“To learn more about just how wolves are beneficial, a short documentary from Quest explains how the presence of wolves influences the behavior of deer, which eventually makes entire ecosystems more biologically diverse and healthy.”可知，拍攝紀(jì)錄片的目的是了解狼是如何對(duì)生態(tài)有益的。故選D。 （3）考查細(xì)節(jié)理解。根據(jù)最后一段中的“The research is one more piece of evidence for why protecting these top predators is important not just for wolves as a species, but for hundreds of species at every level of an ecosystem.”可知，這項(xiàng)研究再次證明了為什么保護(hù)這些食肉動(dòng)物不僅對(duì)狼這個(gè)物種很重要，而且對(duì)生態(tài)系統(tǒng)的各個(gè)層面的物種都很重要。故這項(xiàng)研究的意義在于它有助于證明保護(hù)狼的重要性。故選B。 （4）考查主旨大意。本文主要講述了人類(lèi)以及其他動(dòng)物對(duì)狼的恐懼對(duì)維持健康、平衡的生態(tài)系統(tǒng)是有益的，因?yàn)槭巢輨?dòng)物不會(huì)過(guò)度繁殖，從而保護(hù)了植物的生長(zhǎng)。故選A。 【點(diǎn)評(píng)】本題考點(diǎn)涉及細(xì)節(jié)理解，詞義猜測(cè)和主旨大意三個(gè)題型的考查，是一篇科研類(lèi)閱讀，要求考生在捕捉細(xì)節(jié)信息的基礎(chǔ)上，進(jìn)一步根據(jù)上下文的邏輯關(guān)系，進(jìn)行分析，推理，概括和歸納，從而選出正確答案。5．閱讀理解 Rich countries are racing to dematerialise payments. They need to do more to prepare for the sideeffects. For the past 3,000 years, when people thought of money they thought of cash. Over the past decade, however, digital payments have taken off— tapping your plastic on a terminal or swiping a smartphone has bee normal. Now this revolution is about to turn cash into an endangered species in some rich economies. That will make the economy more efficient—but it also causes new problems that could hold back the transition(轉(zhuǎn)型). Countries are removing cash at varying speeds. In Sweden the number of retail cash transaction per person has fallen by 80% in the past ten years. America is perhaps a decade behind. Outside the rich world, cash is still king. But even there its leading role is being challenged. In China digital payments rose from 4% of all payments in 2012 to 34% in 2017. Cash is dying out because of two forces. One is demand— younger consumers want payment systems that plug easily into their digital lives. But equally important is that suppliers such as banks and tech firms (in developed markets) and teles panies (in emerging ones) are developing fast, easytouse payment technologies from which they can pull data and pocket fees. There is a high cost to running the infrastructure behind the cash economy—ATMs, vans carrying notes, tellers who accept coins. Most financial firms are keen to abandon it, or discourage oldfashioned customers with heavy fees. In the main, the prospect of a cashless economy is excellent news. Cash is inefficient. When payments dematerialise, people and shops are less open to theft. It also creates a credit history, helping consumers borrow. Yet set against these benefits are a couple of worries. Electronic payment systems may risk technical failures, power failure and cyberattacks. In a cashless economy the poor, the elderly and country folk may be left behind. And a digital system could let governments watch over people39。s shopping habits and private multinationals exploit their personal data.（1）Some rich countries are trying to . A.dematerialize moneyB.get rid of the sideeffects o