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職稱英語理工類A完形填空練習(xí)2017

　　完形填空是職稱英語考試�？碱}型，離2017年職稱英語考試已經(jīng)沒有多少時間，為了幫助大家備考職稱英語理工完形填空題，小編整理了一些理工類A級完形填空練習(xí)，希望能幫到大家!

職稱英語理工類A完形填空練習(xí)2017

　　Why India Needs Its Dying Vultures

　　The vultures (禿鷹) in question may look ugly and threatening, but the sudden sharp decline in three species of India's vultures is producing alarm rather than celebration, and it presents the world with a new kind of environmental problem. The dramatic__________(51) in vulture numbers is causing widespread disruption to people living in the__________(52) areas as the birds. It is also causing serious public health problems __________(53) the Indian sub-continent.

　　While their reputation and appearance may be unpleasant to many Indians, vultures have__________(54)played a very important role in keeping towns and villages all over India __________(55) It is because they feed on dead cows. In India, cows are sacred animals and are__________ (56) left in the open when they die in their thousands upon thousands every year.

　　The disappearance of the vultures has __________(57) an explosion in the numbers of wild dogs feeding on the remains of these__________ (58) animals. There are fears that rabies (狂犬癥) may increase as a result. And this terrifying disease may ultimately (最終) affect humans in the region, __________ (59) ild dogs are its main carriers. Rabies could also spread to other animal species, __________(60) an even greater problem in the future.

　　The need for action is __________ (61), so an emergency project has been launched to find a solution to this serious vulture problem. Scientists are trying to__________ (62) the disease causing the birds' deaths and, if possible, develop a cure.

　　Large-scale vulture__________(63) were first noticed at the end of the 1980s in India. A population survey at that time showed that the three species of vultures had declined__________ (64)over 90 per cent. All three species are now listed as "critically endangered". As most vultures lay only single eggs and__________ (65) about five years to reach maturity, reversing their population decline will be a long and difficult exercise.

　　51.A. increase

　　B. threat

　　C. risk

　　D. decline

　　52.A. small

　　B. different

　　C. same

　　D. safe

　　53.A. above

　　B. with

　　C. across

　　D. through

　　54.A. rarely

　　B. long

　　C. recently

　　D. seldom

　　55.A. dangerous

　　B. clean

　　C. smelly

　　D. beautiful

　　56.A. immediately

　　B. occasionally

　　C. hardly

　　D. traditionally

　　57.A. acted as

　　B. led to

　　C. come from

　　D. slowed down

　　58.A. dead

　　B. strange

　　C. wild

　　D. endangered

　　59.A. when

　　B. so

　　C. whether

　　D. since

　　60.A. improving

　　B. causing

　　C. predicting

　　D. finding

　　61.A. frequent

　　B. regular

　　C. urgent

　　D. sudden

　　62.A. identify

　　B. prove

　　C. test

　　D. check

　　63.A. injuries

　　B. deaths

　　C. arrivals

　　D. attacks

　　64.A. in

　　B. on

　　C. along

　　D. by

　　65.A. waste

　　B. consume

　　C. take

　　D. adopt

　　答案與解析

　　51.D。考查詞匯。題干：禿鷹數(shù)量的急劇__________ 給生活在__________ 地區(qū)的人們帶來破壞。從上下文語境來看，通篇文章都在敘述禿鷹瀕臨滅絕對印度環(huán)境的負面影響，而且文章的標(biāo)題中的dying vultures也提供了線索。decline符合上下文的意思，意為“禿鷹的數(shù)量在急劇減少”。increase與上下文的意思相反。故D為正確答案。

　　52.C�？疾楣潭ù钆洹ｎ}干：禿鷹數(shù)量的急劇減少給生活在與鳥__________ 地區(qū)的人們帶來破壞。從上下文語境來看，禿鷹數(shù)量的急劇減少不僅是這些鳥類的災(zāi)難，對當(dāng)?shù)鼐用裢瑯右彩侨绱�，the same as意為“和……一樣”，為固定搭配。故C為正確答案。

　　53.C�？疾榻樵~。題干：這也給__________ 印度次大陸帶來了公共健康的問題。從上下文語境來看，四個選項中只有across the Indian sub.continent(整個印度次大陸)符合題干，故C為正確答案。

　　54.B。考查副詞。題干：雖然它們的聲譽和外觀可能對許多印度人是不愉快的，但是禿鷹__________ 在維護印度城鎮(zhèn)和鄉(xiāng)村的__________ 方面扮演了非常重要的角色。從上下文語境來看，四個選項代入后，long意為“長期以來一直起作用”，合乎上下文的意思，故B是正確答案。

　　55.B�？疾樵~匯。題干：雖然禿鷹的名聲不好，許多印度人也討厭其長相，但是長久以來，禿鷹在維護全印度的城鎮(zhèn)和鄉(xiāng)村的__________ 方面扮演了非常重要的角色。因為禿鷹是以死牛為生。四個選項分別代入后，B選項clean(清潔的)符合題干要求，其他選項dangerous意為“危險的”，smelly意為“有臭味的”，beautiful意為“漂亮的”，均不符合題干要求，故B是正確答案。

　　56.D�？疾樵~匯。題干：在印度，牛是神圣的動物，因而死后__________ 露尸戶外，任其腐爛。露尸戶外是印度的傳統(tǒng)，所以此處填traditionally“傳統(tǒng)地”。選項immediately意為“立即地”，occasionally意為“偶爾地”，hardly意為“幾乎不”，都不通，因此D為正確選項。

　　57.B�？疾楣潭ù钆�。題干：禿鷹的消失—__________ 以__________ 動物為生的野狗數(shù)量暴增。表達的是因果關(guān)系。“the disappearance ofthe vultures”是因，“all explosion in the numbers of wild dogs feeding on the remains ofthese dead animals”是果，四個選項中只有l(wèi)ead to(導(dǎo)致)能表達這種因果關(guān)系，使題干很通順。因此B為正確選項。

　　58.A�？疾樵~匯。題干：禿鷹的消失導(dǎo)致以__________ 動物為生的野狗數(shù)量暴增。從上下文語境來看，應(yīng)該是死的動物，因此A為正確選項。

　　59.D。考查狀語從句。題干：這種可怕的疾病最終會影響當(dāng)?shù)氐木用瘢琠_________ 野狗是狂犬病的主要攜帶者。前后是因果關(guān)系，四個選項中只有since(由于，因為)能表達這種因果關(guān)系。因此D為正確選項。

　　60.B�？疾樵~匯。題干：狂犬病也可能傳播到其他生物，__________ 更大的問題。從上下文語境來看，前后為因果關(guān)系，所以B選項causing(導(dǎo)致)為正確答案。

　　61.C�？疾樵~匯。題干：采取行動的需求是__________ 。從上下文語境來看，空格后提到了“啟動了應(yīng)急項目”，可以推斷要選的形容詞是urgent(緊迫的)，意為“采取行動已刻不容緩”，故C為正確選項。

　　62.A�？疾樵~匯。題干：科學(xué)家們正試圖__________ 導(dǎo)致禿鷹死亡的疾病，如果可能的話，找到治愈該病的方法。四個選項分別代入后，identify(確定)比較符合語境，故A為正確選項。

　　63.B�？疾樵~匯。題干：在印度，人們注意到禿鷹的大批__________ 最早是在20世紀(jì)80年代。根據(jù)上下文語境，deaths可使全段的意思連貫，故B為正確選項。

　　64.D。考查詞匯。題干：根據(jù)當(dāng)時的物種調(diào)查顯示，三種禿鷹的數(shù)量減少了90%以上。四個選項中只有by有“到(某事物)的程度”的意思。故c為正確選項。

　　65.C�？疾樵~匯。題干：由于大部分禿鷹每次只產(chǎn)一只蛋，幼鷹__________ 大約5年的時間才能成熟，因此，若想遏制住禿鷹數(shù)量的下降會是一項長期的、艱巨的任務(wù)。“花費或用多少時間”英語的常用的表達法是“take…days/months/years”，其他三個選項都不合適，故C為正確選項。

　　CellPhone Lets Your Secrets Out

　　Your cell phone holds secrets about you.Besides the names and numbers that you've programmed into it, ______traces____(51) of your DNA linger (遺留) on thedevice according to a new study

　　DNA is genetic (遺傳的)material _____that_____ (52) appears in every cell. Like your fingerprint, yourDNA is _____unique______ (53) to you——unless you have an identical twin. Scientiststoday analyze DNA in blood, saliva (唾液), orhair left ____behind_______ (54) at the scene of a crime. The results oftenhelp detectives identify ____criminals______ (55) and their victims. Your cellphone can reveal more about you ____than_____ (56) you might think.

　　Meghan J. McFadden, a scientist at McMasterUniversity in Hamilton, Ontario, heard about a crime in which the suspect bledonto a cell phone and later dropped the____device_____ (57). This made herwonder whether traces of DNA lingered on cell phones一evenwhen no blood was___involved_____(58). She and colleague Margaret Wallace ofthe City University of NewYork analyzed the flip-open phones(翻蓋手機)of10 volunteers. They used swabs (藥簽) tocollect _____invisible___ (59) traces of the users from two parts of the phone:the outside, where the user ____holds_____(60) it, and the speaker which isplaced at the user's ear

　　The scientists cleaned the phones using asolution made mostly__of____(61) alcohol. The aim of washing was to remove alldetectable traces of DNA. The owners got their phones back for another week.Then the researchers ___returned________ (62) the phones and cleaned each phoneonce more.

　　The scientists discovered DNA that _____belonged______(63) to the phone's speaker on each of the phones. Better samples werecollected from the outside of each phone, but those swabs also picked up DNAthat belonged to other people who had apparently also ____handed______ (64) thephone

　　Surprisingly, DNA showed up even in swabsthat were taken immediately after the phones were scrubbed. That suggests thatwashing won't remove all traces of ___evidence________ (65) from a criminal'sdevice. So cell phones can now be added to the list of clues that can clinch (確定)a crime-scene investigation.

　　51. A. name B.pictures C. shapes D. traces

　　答案：d

　　52. A. that B. while C.as D.what

　　答案：a

　　53. A. common B. good C. helpful D. unique

　　答案：d

　　54. A. behind B. away C. aside D.over

　　答案：a

　　55. A. visitors B. travelers C.scientists D.criminals

　　答案：d

　　56. A. until B. before C.unless D. than

　　答案：d