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[主观题]

H-live-n-one virus in the passage means ______. A. farm birds B. infected farm

H-live-n-one virus in the passage means ______.

A. farm birds

B. infected farm animals

C. people died in Hong Kong

D. a different kind of bird flu virus

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更多“H-live-n-one virus in the pass…”相关的问题

第1题

How can I reduce my risk the virus in an affected area？A、to catchB、of catchingC、as to

How can I reduce my risk the virus in an affected area？

A、to catch

B、of catching

C、as to

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第2题

Now I still keep in touch with my friends in Australia（)e-mail.

A.viable

B.vice

C.via

D.virus

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第3题

I want to_____ to act as nurse to fight against SARS.

A.violence

B.visit

C.virus

D.volunteer

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第4题

It would stop importing Chinese fowl and eggs after finding two cases of a flu virus i

A.exports

B.exporters

C.imports

D.exporter

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第5题

Among the devastating consequences of AIDS has【21】______ its epidemic spread in the develo

Among the devastating consequences of AIDS has 【21】______ its epidemic spread in the developing world. The disease has caused 【22】______ suffering, debilitation, loss of life and disruption of family, social and economic 【23】______ Because of the considerable expense and logistical difficulty in providing antiviral drugs to populations 【24】______ with the Human Immunodeficiency Virus 【25】______ the world, the biomedical community is looking towards vaccines to help solve this compelling problem.

The search for an AIDS vaccine began more than 15 years ago with great 【26】______ and high expectations. With the 【27】______ of the Human Immunodeficiency Virus (HIV) as the cause of AIDS, it seemed that a 【28】______ would follow closely behind. But despite a large concerted effort, the problem has proven more difficult than 【29】______ , and progress has not 【30】______ the 【31】______ hopes. Here I review the 【32】______ scientific obstacles confronting the development of an effective HIV vaccine, and I consider 【33】______ strategies to overcome these obstacles.

It is instructive to consider the circumstances that have 【34】______ to past successes in vaccine development. The smallpox vaccine is 【35】______ the most successful inventions in the history of 【36】______ Why, 200 years ago, without the benefit of modern biotechnology, did the smallpox vaccine succeed so readily while an AIDS vaccine 【37】______ elusive？ The answer lies in an experiment of nature that provided, to an astute observer, a clear direction for smallpox vaccine development. In this classic story of 【38】______ discovery, Edward Jennet noticed that milk maids who had previously contracted cowpox were 【39】______ to smallpox infection. This observation was the critical event leading to the finding that the cowpox virus cross-reacted immunologically with the smallpox virus and could 【40】______ be used to protect against smallpox.

【21】

A．on

B．with

C．been

D．about

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第6题

"Before the operation, I would look at someone and all I could see for their face was jell

y," says Jonathan Wyatt "Now, I can see peoples faces." The 65-year-old is one of six people in the world to receive gene therapy for a【C1】______type of inherited eye disease【C2】______choroideremia(an eye disease). The first published【C3】______of the trial, released today, suggest that【C4】______peoples genes can stop the disease from causing blindness—and【C5】______sight in those whose vision has become【C6】______. Choroideremia is caused by【C7】______in the CHM gene. In those who have the disease, a【C8】______of REP-1 means that cells in the eyes stop working and slowly begin to【C9】______causing blindness. Enter gene therapy, which uses a virus to insert a【C10】______copy of a gene into cells with a gene defect and could【C11】______be used to treat many genetic conditions. Robert MacLaren of the University of Oxford and his colleagues decided to see if it could【C12】______choroideremia. Starting two years ago with Wyatt, they【C13】______a virus carrying a corrective copy of the CHM gene into the eyes of people with choroideremia. Today the team【C14】______that of the six people who received the treatment six months【C15】______or longer, all have described【C16】______in their vision. Still, the long-lasting effects of the treatment remain【C17】______Wyatt had the treatment first, so can【C18】______that the benefits seem to last two years,【C19】______hes just one case. The treatment also cant replace cells that have been【C20】______destroyed.

【C1】

A．common

B．ambiguous

C．rare

D．simple

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第7题

_________ is caused by the hepatitis B virus （）.

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第8题

黄瓜花叶病毒学名的正确写法是

A.Cucumber mosaic virus