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
2023-02-14
73
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 then-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.
【C4】
选项
A、for
B、after
C、unless
D、while
答案
D
解析
前半句提到科学家们发现抗菌肽-AM能在不到一小时的时间内杀死病菌,后半句提到其他抗生素则需要六个小时以上,可以看出是在对比抗菌肽-AM和其他抗生素,因此空格处需要一个表示对比关系的连词。D项while“然而”符合逻辑。A项for“因为”。表示因果关系。B项after“在……之后”,表示先后顺序。C项unless“除非”,表示条件。这三项均不含有对比关系。
转载请注明原文地址:https://kaotiyun.com/show/sCMD777K
0
考研英语二
相关试题推荐
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
Inourcontemporaryculture,theprospectofcommunicatingwith—orevenlookingat—astrangerisvirtuallyunbearable.Everyone
Inourcontemporaryculture,theprospectofcommunicatingwith—orevenlookingat—astrangerisvirtuallyunbearable.Everyone
Inourcontemporaryculture,theprospectofcommunicatingwith—orevenlookingat—astrangerisvirtuallyunbearable.Everyone
Inourcontemporaryculture,theprospectofcommunicatingwith—orevenlookingat—astrangerisvirtuallyunbearable.Everyone
It’sdifficulttoimagineaworldwithoutantibiotics.Theycurediseasesthatkilledourancestorsincrowds,andenableanynu
随机试题
毛果芸香碱降低眼内压的作用机制是什么?
基材经表面处理后表面粗糙度过大,形成的涂层厚度不均匀,()容易最先被破坏。
(非英语类学生必做)IarrivedintheUnitedStates【61】February6,1986,butIremembermyfirstdayherevery【62】Myfriendwaswa
当原子中壳层电子吸收的能量大于其结合能时,电子将脱离原子核的束缚,离开原子成为自由电子,这个过程称为电离。激发和电离都使原子的能量状态升高,使原子处于激发态而不稳定。关于原子的激发和跃迁,叙述正确的是
小方上大学一年级,正在学习《刑事诉讼法》。她对人民法院的下列认识中,不正确的有()
营业税是以商品(含应税劳务)在流转过程中产生的增值额作为计税依据而征收的一种流转税。()
零售商业物业的现场管理是否成功,有多方面的影响因素,包括()。
=__________.
ThereisacommonresponsetoAmericaamongforeignwriters:TheUSisalandofextremeswherethebestofthingsarejustase
Icryeasily.IonceburstintotearswhenthecurtaincamedownontheKirovBallet’s"SwanLake".Istillchokeut5everytime
最新回复
(
0
)