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Viruses are living things
EduBook Organización
- 1900 visitas
Viruses are very tiny living things. They are smaller than cells. All viruses are parasites. When they meet a cell, they enter it and produce more viruses, killing the cell. They can cause many…
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Video: What is AIDS
Tiching explorer Organización
- 4708 visitas
AIDS is the most dangerous sexually transmitted disease. In this 3 minute video we have a brief look at what AIDS is, how the HIV virus is transmitted, and what we can do to protect ourselves against…
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Comprehension check (KET)
EduBook Organización
- 2579 visitas
Look again at Chapter Three. Are sentences ‘Right’ or ‘Wrong’? If there is not enough information to answer ‘Right’ or ‘Wrong’ , choose ‘Doesn’t say’. The barley made Robinson…