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
71
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.
【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/lRMD777K
0
考研英语二
相关试题推荐
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
Everyonewantstobeauthentic.Youwanttobetruetoyourself,notaslavishfollowerofsocialexpectations.Youwantto"liv
Inourcontemporaryculture,theprospectofcommunicatingwith—orevenlookingat—astrangerisvirtuallyunbearable.Everyone
Inourcontemporaryculture,theprospectofcommunicatingwith—orevenlookingat—astrangerisvirtuallyunbearable.Everyone
It’sdifficulttoimagineaworldwithoutantibiotics.Theycurediseasesthatkilledourancestorsincrowds,andenableanynu
It’sdifficulttoimagineaworldwithoutantibiotics.Theycurediseasesthatkilledourancestorsincrowds,andenableanynu
随机试题
与肝细胞癌的发生无关的是
促进机体生长发育、生殖的主要物质是
从伦理学上分析,生物-心理-社会医学模式取代生物医学模式在本质上反映了
某厂拟上一条新的生产线,项目的基准收益率为15%,有两种方案A、B可供选择。两个方案的现金流量如表1-3、表1-4所示。问题:(1)两种方案的财务净现值是多少?(2)两种方案的动态投资回收期各是多少?(3)应选择哪个指标
与工业产品生产相比,建设工程项目的运作和施工不能标准化,反映了建设工程项目及其生产具有( )的特点。
()是内存储器中的一部分,CPU对它们只取不存。
按影响因素的多少不同,指数因素分析方法可以分为()。
A.参与睡眠形成机制B.参与学习和记忆机制C.维持和改变大脑皮层的兴奋状态D.协调各种感觉在皮层与皮层下结构间的联系E.引起特定感觉并激发大脑皮层的传出活动特异性感觉投射系统的主要功能是
[*]
KDC分发密钥时,进行通信的两台主机都需要向KDC申请会话密钥。主机与KDC通信时使用的是(34)。
最新回复
(
0
)