According to the passage, most women ______. A: were infected by a single variant of the HIV virus B: were infected by multiple variants of the HIV virus C: were stronger than men D: had anti-body in their body

The World Health Organization says that the virus can ________ from an infected person to another in close contact. A: transplant B: transform C: transport D: transmit

Interferons are a family of eukaryotic cell proteins classified according to the cell of origin. IFN-ɑ and IFN-β are produced by a variety of virus-infected cells. They A: act on target cells to inhibit viral replication B: act directly on the virus C: are virus-specific D: all of above

3. (B) A: A) People were concerned about the number of bees. B: B) Several cases of Zika disease had been identified. C: C) Two million bees were infected with disease. D: D) Zika virus had destroyed some bee farms.

The vaccine for measles is best characterized by() A: Bacteriocin B: Killed virus vaccine C: Inactivated virus vaccine D: Live virus vaccine E: Recombinant virus vaccine

The pathogen of hemorrhagic fever with renal syndrome is A: Dengue virus B: hantavirus C: Xinjiang haemorrhagic fever virus D: Ebola virus E: Congo hemorrhagic fever virus

Which of the following can be inferred from the passage A: There are useful viruses as well as harmful ones. B: Many virus checking software is free of charge. C: Even if you take the advice, your computer may still be infected with viruses. D: Shut down your computer whenever there is a virus.

Which is the most common pathogen in infant acute bronchiolitis? A: Respiratory syncytial virus B: Influenza virus C: Rhinovirus D: Ecovirus E: Coxsackie virus

It is reported that those infected with SARS

SARS-CoV-2 is a ____ A: RNA virus B: DNA virus C: Viroid D: Virusoid E: Prion