Composition of HLNL A HLNL virus

When the TV broadcast a confirmed flu case in Beijing on the 16th, I was peeling off the few remaining rice grains in the bowl. Finally, the lunch in a heavy atmosphere was over, and the announcer was still narrating unhurriedly on the TV, without raising or descending: "This is the third confirmed case in China, and a total of 8,451 confirmed cases of influenza A have been reported in 36 countries around the world......."”

There is a claim that the current epidemic was caused by the leakage, mutation and spread of the virus due to careless operation of scientists in a certain country when they were doing general influenza vaccine development experiments in the laboratory, which sounds somewhat indignant. It is neither the outbreak of the virus that exists in the world, nor the epidemic of incurable diseases that are difficult to conquer for a long time, but the mutation of ordinary influenza viruses that led to the epidemic. This human error has occurred, so where is the medicine that we are so proud of?

Disasters keep coming. The "SARS" war in memory has not been forgotten, the panic of "avian flu" has not faded, and now the ensuing influenza A has to sprinkle salt on the wounds that have not yet healed. The virus does not seem to be the vanquished under our highly developed medical microscope, but rather like a latent "Satan" making a comeback, tossing tricks every year, and even a casual mutation has forced mankind to spend huge sums of money on the research and development of the vaccine industry, often always in a hurry.

In this way, the cost of "Satan" is very low, or rather, the mutation is just an evolutionary instinct made by them in the face of various potion sprays. And people have to pay for the huge "cost of responding to the war".

However, not everyone sees this underlying economics. So we see that gourmets are still unbridled in their appetite for animal bodies.

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A and B viruses are a kind of microorganisms with a very simple structure, it has no cell structure, mainly composed of protein shell and internal genetic material, and the internal genetic material is nucleic acid (most viruses are DNA, only a few viruses are RNA) A is correct, B is wrong

c. Viruses cannot live independently, and can only obtain nutrients from other living organisms to maintain their lives, which is parasitic c error

Therefore, a

(1) Protect susceptible populations.

2) Antigen antibody.

3) Vaccine-containing inoculum is low.

In order for infectious diseases to become prevalent, there must be three links: the source of infection, the route of transmission and the susceptible population These three links must be in place at the same time, and none of them is indispensable According to this, there are three measures to control infectious diseases: controlling the source of infection, cutting off the transmission route, and protecting the susceptible population Among them, the prevention of infectious diseases through vaccination is to protect some people with weak body immunity and easy to be infected, so this measure is to protect the susceptible population

Therefore, c

A. According to the information in the question, ethanol can kill and inactivate influenza A HLNL virus, and ethanol ethanol can be used as a disinfectant, so A's statement is correct;

b. The number of atoms contained in a molecule is indicated according to the number marked in the lower right corner of the element symbol; Therefore 2:6:1 is the ratio of the number of atoms contained in an ethanol molecule; It is not the mass ratio of carbon, hydrogen and oxygen in ethanol, so B is wrong;

c. According to the analysis of ethanol (chemical formula: C2 H6 O), ethanol is composed of three elements: carbon, hydrogen and oxygen; Therefore, the statement c is correct;

d. According to the fact that ethanol is obtained by fermentation and distillation of sorghum, corn and potatoes, it is a renewable energy source, so D is correct;

Therefore, choose B