What is the best title among the following 4 titles for a research paper? A: Social determinants of health: the role of effective communication in the COVID-19 pandemic in developing countries B: The role of effective communication in the COVID-19 pandemic in developing countries C: Social determinants of health and the role of effective communication in the COVID-19 pandemic in developing countries D: Effective communication in the COVID-19 pandemic in developing countries

The outbreak of a flu _______ A: epidemic B: pandemic C: plague

Which is most widespread? A: an outbreak B: an epidemic C: a pandemic

中国遭受严重新冠疫情the COVID-19 pandemic _____China hard

Containing the global pandemic, like bolstering the global economy, depends on 2 （中美合作）.

The 13 National Winter Games have been postponed due to the global COVID-19 pandemic . （ ）

The semester is _____ because of the cronovirus pandemic outbreak. A: shorten B: shorting C: shortened D: short

Most of the experts agree that there is virtually the _______ of sleepiness in this country. A: pandemic B: epidemic C: infection D: contagion

A disease not present in a country and brought from outside is( ) A: Exotic B: Endemic C: Epidemic D: Pandemic

No country can stay _______ in the global pandemic of COVID-19. A: lonely B: isolated C: alone D: along