【正文】 in 2020. However, Rodriguez assured me that his staff won39。s campus while it delivered Red bull and other drinks to students. To retrieve (檢索) orders, the app encourages students to give the robot a wave。 Broadly speaking, jobs of caring for robots fall under the umbrella of careers in automation, which include maintenance, engineering and programming. The demand for people with this skill set is considerable, with 20 million to 50 million new jobs to be expected in this category by 2030, according to the Mckinsey Global Institute. In the year that ended in June 2018, had almost three times the number of positions on the recruitment mittee that ended in June 2016.s job was to monitor how it handled various grounds, field ments from the public, and press the off switch if necessary. He said, People would also ask if it could deliver beer. It couldn39。 During the winter of 2017, an 18year old college student named Canon Reeves spent much of his time trailing a kneehigh robot around Fayetteville, Arkansas, as it delivered Amazon packages to students. The robot, created by a startup called Starship Technologies in 2014, is basically a cooler on wheels。 【點(diǎn)評】本題考點(diǎn)涉及細(xì)節(jié)理解，詞義猜測和主旨大意三個(gè)題型的考查，是一篇科研類閱讀，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。本文主要講述了人類以及其他動(dòng)物對狼的恐懼對維持健康、平衡的生態(tài)系統(tǒng)是有益的，因?yàn)槭巢輨?dòng)物不會(huì)過度繁殖，從而保護(hù)了植物的生長。故選B。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)物不僅對狼這個(gè)物種很重要，而且對生態(tài)系統(tǒng)的各個(gè)層面的物種都很重要。故選D。 （2）考查細(xì)節(jié)理解。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。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】本文是一篇說明文，研究表明人類以及其他動(dòng)物對狼的恐懼對維持健康、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。The fear of wolves put them in danger of disappearing.C.It provides evidence that wolves are endangered animals.（4）What is the main idea of the passage? A.It helps prove the importance of protecting wolves.C.To study what good wolves can do to ecosystems.（3）What is the significance of the research? A.To show how wolves benefit from ecosystems.C.Accept.（2）For what purpose was a documentary made? A.Notice.Understand.Expect. 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.t adopted ecologicalprocess management—allowing natural ecological processes to take place with least human intervention. 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。 Wolves strike fear into the hearts of many species, humans included. Our fear of them has brought them to the edge of dying out, as we have cruelly killed them as petitors and troublemakers. But researchers 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. 【點(diǎn)評】本題考點(diǎn)涉及細(xì)節(jié)理解和推理判斷兩個(gè)題型的考查，是一篇科普類閱讀，考生需要準(zhǔn)確捕捉細(xì)節(jié)信息，并根據(jù)上下文進(jìn)行邏輯推理，從而選出正確答案。根據(jù)最后一段中的“The objects recovered from the bottom of the sea likely came from the recent explosion for two main reasons.”可知，作者在最后一段是想給出支持猜測的理由。故選B。 （3）考查推理判斷。根據(jù)第一段中的“Scientists have found what they believe are pieces of a meteor(流星)that fell to the earth last year.”可知，一場巨大的流星雨導(dǎo)致了在海中搜索的開始。故選C。 （1）考查細(xì)節(jié)理解。一場巨大的流星雨導(dǎo)致了在海中搜索的開始。Describe the process of the search.【答案】 （1）C（2）A（3）B（4）B 【解析】【分析】本文是一篇說明文，科學(xué)家們發(fā)現(xiàn)了他們認(rèn)為是去年墜落地球的流星碎片。Give reasons to support a guess.C.They have better submarine equipment.（4）What does the author intend to do in the last paragraph? A.They like to explore strange sea areas.B.The brainstorm of researchers.（3）Why do the scientists prefer to search for meteors in the ocean? A.Plenty of natural resources.B.A huge meteor shower.D.To observe movements of the universe.C.To recover the rock particles. The Nautilus is equipped with two remotely operated vehicles(ROVs), called Hercules and Argus. These robotic submarines help researchers find and collect materials from the seafloor. The fact that the particles landed in the ocean, instead of on land, means larger pieces may have survived and can be studied. For this reason, scientists decided to launch the first intentional search for meteorites from the ocean. Until the latest research, scientists had only accidentally discovered a small number of meteorites from drilling operations. The crew of the Nautilus, a private research ship, recovered the rock particles(顆粒).The Nautilus is operated by the Ocean Exploration Trust. The group says its aim at present is to examine areas of the ocean that have never been explored before.3．犇犇閱讀理解 根據(jù)第一段中的A single dose(劑量) of an experimental vaccine(疫苗) can protect mice against the Zika(寨卡) virus,可知，一種實(shí)驗(yàn)性疫苗可以保護(hù)小鼠免受寨卡病毒侵襲，由此可知，本文主要介紹的是寨卡病毒疫苗對小白鼠非常有效，故選A。根據(jù)第三段中的US scientists from the Walter Reed Army Institute of Research, the Beth Israel Deaconess Medical Center and Harvard Medical School tested two types of Zika vaccine in mice可知，美國科學(xué)家在白鼠身上只測試了兩種而不是兩種以上的寨卡病毒，故選B。 would still be years away可知，但是，即使這些進(jìn)展順利，一種廣泛用于保護(hù)高危人群的授權(quán)疫苗仍需數(shù)年時(shí)間，也就是說如果人體試驗(yàn)進(jìn)展順利的話，短期內(nèi)仍無法獲得授權(quán)疫苗，故選C。根據(jù)第二段中的But even if these go well, a licensed