Treatment for Dengue Fever
There is no vaccine to prevent dengue and no specific medicine to treat it, so the only defense is eradication of the mosquitoes that carry it and measures to protect people from mosquito bites.
The small white animals with pink eyes are kept in a special isolated room so that they will not be exposed to any bacteria or germs that might infect them. They have been altered to be susceptible to human diseases.
By infecting these humanized mice with strains of the dengue virus, investigators can study how the disease takes hold and what factors might cause the more serious and often deadly dengue hemorrhagic fever.
Lab workers infect the mice artificially with the virus, keeping precise records of how much virus and what type of virus is used. But natural transmission of dengue by mosquitoes involves certain proteins the insects inject into the skin, something that Rico-Hesse says is missing when mice are artificially infected in the lab.
Rico-Hesse and her colleagues are breeding mosquitoes in the laboratory to test various strains of the dengue virus transmitted to the mice by mosquitoes.
Which statement is correct according to Paragraph 1
B.Strong effect of certain medication can cure dengue fever.
D.Scientists have invented a vaccine that can prevent dengue fever
解析:问题问的是:根据第一段,正确的是哪一项?第一段中提到,没有疫苗和药物能预防或治愈登革热,只有消灭所有携带病毒的蚊子才能防止被感染。由此可见,C选项正确
A.have red eyes.
C.are put in the room with lots of mosquitoes.
正确答案:D
According to the report, the virus strains that cause the more severe dengue and hemorrhagic fever are actually
B.from a special mosquito.
D.killable with a specific genetic variant
解析:问题问的是:能够导致更加严重的登革热和出血热的病毒株实际上是什么?第六段最后一句中提到这两种病毒株其实是属于同一种基因变异体。因此选A。容易引起混淆的是D选项,其中提到了特殊变异体,只是该选项的意思是说病毒可以被病毒的特殊变异体杀死,显然不对。注意killable,是kill 和able组成的合成词,意为可杀死的
A.Lab workers inject into the mice the fever virus with a syringe .
C.The artificial infection of virus has exactly the same effect as the natural one.
正确答案:A
What is the authors attitude to the future of the researchers work
B.Pessimistic.
D.Sarcastic
解析:问题问的是:作者对该项研究的前景持何种态度?纵观全文,作者始终非常客观的叙述试验的细节及进展情况,包括最后对前景的展望都是引用研究人员的原话。因此,他的态度应该是客观的。C选项正确
National Fitness Day 全民健身日
体坛英语资讯:Perus Bello tracing fathers footsteps at Youth Olympics
体坛英语资讯:Tipper wins crash-marred Stage 11 final in Tour of Qinghai Lake
大热天跳到冷水中或致命,即使你会游泳
体坛英语资讯:Beijing Guoan crown CSL half-season champions after beating Hebei China Fortune 6-3
娱乐英语资讯:Disneys remake of Chinese woman warriors saga starts production
体坛英语资讯:Vasco confirm signing of former Roma defender Castan
国际英语资讯:Three Ugandan lawmakers arrested over stoning of presidential convoy
国际英语资讯:WHO chief says more worried after visit to Ebola-hit DR Congo
意大利热那亚桥梁坍塌造成至少26人丧生
首位华人!王嘉尔拿下2018青少年选择奖
土耳其货币暴跌,没想到zara却捡了个大便宜!
国内英语资讯:China seeks WTO dispute settlement over US safeguard measures, subsidies
从日美贸易摩擦看中美贸易发展趋势
The Naughty Cat 淘气的猫
国际英语资讯:Sri Lankan president urges legislators to join new government amidst political crisis
国际英语资讯:Indonesian president orders swift aids distribution in quake-stricken Lombok
据说,早上起床后空腹喝水有7个好处
为什么你总是皮肤发痒?
国际英语资讯:Two Greek servicemen released from Turkey expected in Greece Wednesday
国际英语资讯:S. African president embarks on mission to woo investment
体坛英语资讯:Former Flamengo boss Ze Ricardo to coach Botafogo
国际英语资讯:Turkey, Russia vow to enhance strategic partnership
在这家意大利餐厅,社交媒体粉丝够多可以免单
KFC被禁止向孩子投放广告!原因震惊到我了
起早床好难,如何成功起早床?
My Dream 我的梦想
夹在美中之间的欧盟
体坛英语资讯:Defending 1o de Agosto beat Interclube 2-0 to lead Angola Championship
国际英语资讯:Merkels CDU suffers severe setback in Hesse election: initial forecast