Usually, the influenza virus is spread through the air from (1) or (2).
举一反三
- How does the virus pass from person to person? A: through the air B: skin contact C: through bloodd D: in food
- W.H.O. reported the influenza because（） A: the doctor belonged to that organization B: many people in Hong Kong also suffered from it C: the doctor found its virus and sent the samples to them D: it spread widely in Singapore for the first time
- How does the disease mentioned in the passage spread（） A: Through food. B: Through air C: Through insects. D: Through body fluids.
- Takeoff is the phase of flight in which an aircraft goes through a _____ from moving along the ground (taxiing) to flying in the air, usually starting on a runway.
- Whatis the major cause of influenza? A: H.influenzae B: Influenza virus C: rhinovirus D: Respiratory syncytial virus E: N.meningitidis