【正文】 ns consist solely of can be inferred from the text that anions behaving as “simplecharged spheres” could be expected to[A] readily lose electrons and bee positively charged.[B] move freely in and out of their cavities.[C] respond to photons by liberating electrons.[D] remain fixed relative to their which of the following statements regarding electrides wouldthe author most likely agree?[A] They have proven themselves to be of great mercial value.[B] Their future mercial value is promising but uncertain.[C] They are interesting but of no practical value.[D] They have mercial value mainly in solar energy applications.[答案與考點(diǎn)解析]1.【答案】B【考點(diǎn)解析】本題是一道中心主旨題。本文的中心主旨句在第二段的第一句，如果抓住了這句話并且聯(lián)系每段的中心主旨句，就可得出本題的正確選項(xiàng)B。其實(shí)本文第二段就是在講一種新的晶體的與眾不同的“characteristics”（特點(diǎn)）?？忌诮忸}時(shí)一定要首先找出全文的中心主旨句，并與上下文聯(lián)系。2.【答案】D【考點(diǎn)解析】這是一道段落關(guān)系題。從第二段到尾段是本文作者闡述其中心思想的段落。在展開(kāi)中心思想之前，作者為中心思想的展開(kāi)進(jìn)行了鋪墊（講述一般晶體的特點(diǎn)），從而為第二段到尾段的陳述（講述一種新晶體的特點(diǎn)）提供明確的對(duì)比?？忌诮忸}時(shí)一定要注意段落之間的關(guān)系。3.【答案】D【考點(diǎn)解析】這是一道審題定位題。題干中沒(méi)有給出明確的審題定位信息。破解此題需要考生平時(shí)的閱讀積累，這是一道較難的題目。題干中所涉及的是“the defining characteristic of an electride”（電子晶體的特點(diǎn)）。在第二段作者第一次在文章中談到了“electride”，所以其特點(diǎn)也應(yīng)該在第二段向讀者交待，故本題的答案信息來(lái)源應(yīng)該在第二段。綜合第二段第二、三句的內(nèi)容可推導(dǎo)出本題的正確選項(xiàng)D?？忌诮忸}時(shí)一定要具備出色的審題定位能力。4.【答案】D【考點(diǎn)解析】本題是一道句間關(guān)系與反推題。題干中的信息以將本題的答案信息確定在第三段。根據(jù)第三段所陳述的內(nèi)容進(jìn)行反推可得出本題的正確選項(xiàng)D。在進(jìn)行反推時(shí)一定要注意第一句中的“do not behave as if?”以及第二句中的“cannot be pinned down”所起的作用。考生在解題時(shí)一定要具備反推即逆向推理的能力。5.【答案】B【考點(diǎn)解析】這是一道審題定位題。本題的題干沒(méi)有提供任何審題定位可銳教育官網(wǎng) 的信息。但是善于閱讀的考生應(yīng)該知道每篇文章尾段的重要性。在本題到來(lái)之前本文的尾段還沒(méi)有涉及任何一道題，故考生應(yīng)該首先從尾段中尋找本題的答案信息。尾段的第二句第四句表明新的晶體在商業(yè)方面的可利用性；尾段的第五句表明這種新的晶體的不足之處。可見(jiàn)本題的正確選項(xiàng)應(yīng)該是B?？忌诮忸}時(shí)一定要對(duì)文章結(jié)構(gòu)以及出題點(diǎn)有所認(rèn)識(shí)，最好對(duì)全文有整體的把握。[參考譯文]在各種最簡(jiǎn)單和最常見(jiàn)的晶體中，離子鹽是其中一例，它典型的實(shí)例就是氯化鈉，或普通的食鹽。離子鹽的基本組成成份便是離子，也就是那些由于得到或失去一個(gè)或多個(gè)電子而帶有電荷的原子或分子。例如，在形成氯化鈉的過(guò)程中，鈉原子釋放一個(gè)電子（從而帶有正電荷）而氯電子得到一個(gè)電子（從而帶有負(fù)電荷）。這些離子由于帶有相反的電荷而相互吸引，它們緊密地堆砌在一起就象緊密擠壓在一起的球體。最近，密西根州立大學(xué)的科學(xué)家們研制出一種新的被稱為電子晶體的晶體。在電子晶體中，陰離子（即帶負(fù)電荷的離子）全部被電子替代，這些電子被困在自然形成的空穴中，而空穴位于規(guī)則堆砌的陽(yáng)離子（即帶正電荷的離子）的框架內(nèi)。電子晶體是第一種陰離子空間全被電子占據(jù)的離子鹽。和其它類型的陰離子不同，作為陰離子的電子不像那些簡(jiǎn)單的帶電球體。特別地，由于它們的質(zhì)量很小而且有與遠(yuǎn)距離的離子進(jìn)行相互作用的傾向，它們不會(huì)被固定在任何一個(gè)位置。相反，它們會(huì)到處游離，或者緊靠那些在空穴邊上的原子，或者在這些原子之間游離，并且還和附近空中的電子發(fā)生相互作用，甚至于可能與它們交換位置。電子晶體的特征很大程度上依賴于空穴間的距離，而這些空穴便是容納被捕獲電子的地方。當(dāng)這些被捕獲的電子相距很遠(yuǎn)時(shí)，它們之間的相互作用不強(qiáng)，因而在某種程度上表現(xiàn)為一組相互孤立的負(fù)電荷。但當(dāng)它們間的距離很近時(shí)，它們便表現(xiàn)出一些特征來(lái)，很像大量相同離子的集合。當(dāng)它們間的距離更近時(shí)，群體集合屬性更占主導(dǎo)地位，而且電子也出現(xiàn)“離位”現(xiàn)象：它們不再被束縛于單個(gè)的空穴之上，而是或多或少地可以在正離子的構(gòu)架之間穿越。通過(guò)從不同的材料來(lái)合成電子晶體，科學(xué)家們可以改變陰離子空穴的幾何結(jié)構(gòu)，以及改變它們同周?chē)庪x子之間的關(guān)系。這些隨之而來(lái)的特征使得電子晶體可能成為經(jīng)濟(jì)實(shí)用的新材料和新設(shè)備的基礎(chǔ)。例如，由于在某些電子晶體中，電子結(jié)合得非常微弱，從而使得這些晶體可以有效地用作光敏探測(cè)器。在這種探測(cè)器中，一束光子可以釋放一個(gè)電子，從而形成一股小電流。這種結(jié)合微弱的特性同樣可使電子晶體對(duì)太陽(yáng)能轉(zhuǎn)換器和電池的陰極很有用。可電子晶體的一個(gè)缺陷在于它易于與空氣和水發(fā)生反應(yīng)而分解。目前，研究人員正設(shè)法尋找提高電子晶體穩(wěn)定性的方法。第四篇：2018年可銳考研英語(yǔ)完形填空模擬題可銳教育官網(wǎng)2018年可銳考研英語(yǔ)完形填空模擬題（一）Text1．Fill each of the numbered blanks in the following passage with one suitable the beginning, water has furnished man with a source of food and a highway to travel first civilisations arose____________(1)water was a dominant element in the environment, a challenge__________(2)man’s Egyptians invented the 365___________(3)calendar in response___________(4)the Nile’s annual Babylonians, who were among ___________(5)most famous lawmakers___________(6)antiquity, devised edicts regulating water inspired the Chinese___________(7)build a 1,000 mile canal, a plex system___________(8), after nearly 2,500 years, ___________(9)still partly in use and still mands the awe of the ancients never found plete solutions ____________(10)their water Hwang Ho, or Yellow River, is also known___________(11)“China’s Sorrow”。it is so erratic and dangerous___________(12)in a single flood it has caused a million harassed the great civilisation of the Indus River valley, and inadequate drainage ruined much__________(13)its (14)dominates man as it always has___________(15).Its presence continues to govern the location of his homes and cities。its tempestuous variability can kill ___________(16)or his herds or his crops。its routes link him to____________(17)fellows。its immense value may add___________(18)already dangerous political are many examples__________(19)this in our___________(20)： Text2．SectionⅠ Use of EnglishDirections:Read the following the best word(s)for each numbered blank and mark A, B, C or D on ANSWER SHEET 1.(10 points)Language is a system of arbitrary vocal symbols used for human agreed upon among linguists, this 2 covers four important aspects: system, arbitrary, symbol and is a system, 3 linguistic elements are arranged systematically, 4 being a system ensures a mon 5 on which the users can 6 it and understand , in the 7 that there is usually without 8 connection between a word(dog, for instance)and the thing referred to by the word “dog”.A 9 from Shakespeare would make a good example: “a rose by any other name 可銳教育官網(wǎng)would smell as sweet?！?That is why there are 10 languages in the world, with so many different sounds and writings, all of which 11 more or less the same is symbolic, because words(writings/pictogram)are associated 12 objects, concepts, actions, by nothing more than other words, language users 14 the sounds or vocal forms to symbolize 15 they wish to is vocal, because sound or speech is the primary 16 for all human systems developed much later than the spoken recognition can be proved by the fact 18 every normal human can 19 in a certain language but not 20 is able to write。1.[A] Presumably [B] Broadly [C] Incidentally [D] Cheerfully2.[A] interference [B] access [C] impact [D] definition3.[A] since [B] if [C] unless [D] while4.[A] other than [B] now that [C] rather than [D] except that5.[A] freedom [B] origin [C] ground [D] reform6.[A] grasp [B] urge [C] oblige [D] assess7.[A] cost [B] sense [C] sight [D] risk8.[A] paradoxical [B] continuous [C] inpatible [D] intrinsic9.[A] maintenance [B] quotation [C] existence [D] survival10.[A] plex [B] racial [C] numerous [D] prominent11.[A] bind [B] carry [C] restrain [D] sustain12.[A] to [B] from [C] by [D] with13.[A] convention [B] conviction [C]conservation [D] consensus14.[A] substitute [B] wreck [C] employ [D] propel15.[A] when [B] that [C] which [D] what16.[A] version [