Spread of COVID-19 occurs via airborne particles and droplets. People who are infected with COVID can release particles and droplets of respiratory fluids that contain the SARS CoV-2 virus into the air when they exhale (e.g., quiet breathing, speaking, singing, exercise, coughing, sneezing). The droplets or aerosol particles vary across a wide range of sizes – from visible to microscopic. Once infectious droplets and particles are exhaled, they move outward from the person (the source). These droplets carry the virus and transmit infection. Indoors, the very fine droplets and particles will continue to spread through the air in the room or space and can accumulate.
Since COVID-19 is transmitted through contact with respiratory fluids carrying the infectious SARS-CoV-2 virus, a person can be exposed by an infected person coughing or speaking near them. They can also be exposed by inhaling aerosol particles that are spreading away from the infected person. Transmission of COVID-19 from inhalation of virus in the air can occur at distances greater than six feet. Particles from an infected person can move throughout an entire room or indoor space. The particles can also linger in the air after a person has left the room – they can remain airborne for hours in some cases. Someone can also be exposed via splashes and sprays of respiratory fluids directly onto their mucous membranes. Spread may also sometimes occur through contact with contaminated surfaces, though this route is now considered less likely. See Science and Technical Resources related to Indoor Air and Coronavirus (COVID-19) or Indoor Air and COVID-19 Key References and Publications for technical information.
Поделитесь своими знаниями, ответьте на вопрос:
Exercise 1.
Open the brackets using Present Simple or Present Continuous.
I'm not drinking coffee now. I'm writing an English exercise.
I don't drink coffee in the evening. I drink coffee in the morning.
Your friend is doing his homework now?
Your friend is going to school in the morning?
Look! The baby is sleeping. The baby always sleeps after dinner.
My grandmother don't work. She is on pension.
Where is your cousin work? - He works at a hospital.
Exercise 2.
Choose the correct answer.
Story about a person's life written by someone else
d) biography
Facts and statistics about people, places and things
b) encyclopedia
Long story, usually in chapters
b) novel
Has rhythm, may rhyme, may have stanzas (sections)
a) poetry
Exercise 3.
Open the brackets using the first verb with used to, and the second one in Past Simple.
e.g.: He (live) in New York before he (enter) Oxford University. – He used to live in New York before he entered Oxford University.
I used to earn enough money, but then I lost my job.
Bob not used to like football, but then he changed his mind.
My mum used to drive a lot before she had that accident.
This telephone used to work well before my son dropped it.
Mary used to work in a hotel, but then she got married.
He used to play basketball before he broke his leg.
Exercise 4.
Choose the correct answer.
He was cooking his wife came into the room.
c) when
She stayed at school the lessons were over.
b) until
He was reading the book his children were doing homework.
c) while
Call me you remember some new information.
a) as soon as