首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Scientists have discovered a powerful antibiotic in the blood stream of giant pandas that can destroy bacteria. The Chinese rese
Scientists have discovered a powerful antibiotic in the blood stream of giant pandas that can destroy bacteria. The Chinese rese
admin
2022-01-04
74
问题
Scientists have discovered a powerful antibiotic in the blood stream of giant pandas that can destroy bacteria. The Chinese researchers discovered the【C1】________known as cathelicidin-AM, after【C2】________the panda’s DNA It’s thought that the antibiotic is【C3】________by the bear’s immune system in order to protect them from infections.
The scientists found that cathelicidin-AM killed bacteria in less than an hour【C4】________other antibiotics took more than six hours. They now want to develop the substance as a new drug to fight superbugs.
The【C5】________bears, of which there are just 1,600 in the wild, have become a symbol for conservation—and now there could be a new reason to try and protect them.【C6】________, scientists will not need to rely on the animal’s unreliable breeding ability to【C7】________the new antibiotic, as they have been able to make it artificially in the lab by decoding the genes to produce a small molecule known as a peptide.
Dr Xiuwen Yan, who led the research at the Life Sciences College of Nanjing Agricultural University in China told the Daily Telegraph: "It showed potential antimicrobial activities against wide【C8】________of microorganisms including bacteria, both standard and drug-resistant【C9】________. Under the pressure of increasing microorganisms【C10】________drug resistance against conventional antibiotics, there is【C11】________need to develop new type of antimicrobial agents. Gene-encoded antibiotics play an important role in immune system against【C12】________microorganisms. They cause much less drug resistance than conventional antibiotics."
Panda populations have decreased【C13】________the destruction of their natural habitat and bamboo food【C14】________in China and south east Asia.【C15】________to increase their numbers, including efforts at Edinburgh Zoo with resident pandas Tian Tian and Yang Guang, have been【C16】________for the extreme difficulty in getting them to breed in captivity.【C17】________in the wild, pandas【C18】________to breed easily, as the females only come into season once a year.
It has been【C19】________that the millions of pounds spent in using expensive artificial breeding techniques could be put to better use on other conservation projects. And this new discovery is likely to【C20】________the case to save the endangered creatures.
【C17】
选项
A、But
B、Even
C、Since
D、Only
答案
B
解析
前面提到很难让熊猫在圈养状态下繁殖,空格后又提到雌熊猫一年只有一次发情期(come into season),说明在野外的熊猫的繁殖也不容易,两个句子是递进关系。B项even表示 “甚至”,加强语气,内容比前一句的意思更进一层。A项But“但是”表示转折。C项Since“由于”表示原因。D项Only“只有”引出条件。
转载请注明原文地址:https://kaotiyun.com/show/5MY4777K
0
考研英语二
相关试题推荐
Accordingtothepassage,thefactthatyoungpeopleseemtobelosinginterestinscience______.Thesecondparagraphismain
Theremarkableprogressofscienceandtechnologyinthe20thcenturyhasbroughtenormousbenefitstohumankind.Longandhealt
Leadingdoctorstodayweighinonthedebateoverthegovernment’sroleinpromotingpublichealthbydemandingthatministersi
BritainmightstillbepartofFranceifitweren’t______adisastrousflood200,000yearsago,accordingtoscientistsfromImpe
Everyone,itseems,hasahealthproblem.AfterpouringbillionsintotheNationalHealthService,Britishpeoplemoanaboutdir
Thinkthisway,it’syourinabilitytoresistcheesecakethat’smakingittoughtofitintoyourskinnyjeans?Well,anewstudy
Scientistsoftenstruggletocommunicatethefindingsofresearch.Oursubjectmattercanbetechnicalandnoteasilydigestedb
Thebattletopreventoratleastslowglobalwarminghasintensifiedinthepastyearasscientistshavelearnedmoreaboutthe
OntheheelsofElNino,itsopposite,LaNinamaysoonarrive.InaWeeklyUpdate,scientistsattheNOAAClimatePredictionCe
Afull-timejobdoesn’thavetodestroyallhopeoffamilydinnersorafternoonplaytime.Womencanincreasetheirchancesofge
随机试题
精癃相当于西医学的
某厚层黏性土组成的冲积相地层,由于大量抽汲地下水引起大面积地面沉降。经20年观测,地面总沉降量为1250mm,从地面下深度60m处以下沉降观测标未发生沉降,在此期间,地下水位深度由地面下5m下降到地面下45m。试问:该黏性土地层的平均压缩模量E(MPa)最
大体积混凝土浇筑应采取措施降低水化热,使内外温差不宜超过()。
下面对Word创建表格功能的正确描述是()。
关于计算机内存的描述,下列说法不正确的有()。
下列选项中,不能作为政府采购当事人中采购人的有()。
证券公司应当在代销合同签署后()个工作日内,向证券公司住所地证监会派出机构报备金融产品说明书、宣传推介材料和拟向客户提供的其他文件、资料。
若有以下定义:chara;intb;floatc;doubled;则表达式a*b+d-c值的类型为【】。
A、Shecan’tfindajob.B、Shedoesn’tknowhowtomanageabookstore.C、ShewantstoquithercurrentjobintheIBMoffice.D、
Scatteredaroundtheglobearemorethan100smallregionsofisolatedvolcanicactivityknowntogeologistsashotspots.Unlik
最新回复
(
0
)