Câu 36-40: Read the passage carefully.
1. An ongoing epidemic of coronavirus disease 2019 (COVID-19) caused by SARS-CoV-2 started in December 2019. It was first identified in Wuhan, capital of Hubei province, China. It is believed to have originated from another animal and subsequently spread between people. The time between exposure and disease onset is typically 2 to 14 days. Symptoms may include fever, cough, and shortness of breath. Complications may include pneumonia and acute respiratory distress syndrome. There is no vaccine or specific antiviral treatment, with efforts typically aiming at managing symptoms and supportive therapy. Hand washing is recommended to prevent spread of the disease. Anyone who is suspected of carrying the virus is advised to monitor their health for two weeks, wear a mask, and seek medical advice by calling a doctor before visiting a clinic.
2. The first two confirmed cases in Vietnam were hospitalised on 22 January at Chợ Rẫy Hospital, Ho Chi Minh City. These were a Chinese man travelling from Wuhan to Hanoi to visit his son living in Vietnam, and the son, who is believed to have contracted the disease from his father. On 29 January, the son was discharged with full recovery and the father was discharged on 12 February. The National Institute of Hygiene and Epidemiology said that on February 7, the research team successfully cultured and isolated a new strain of coronavirus ( nCoV ) in the laboratory, facilitating rapid testing of cases. infected and suspected nCoV infection. Moreover, Vietnam has also cured 16/16 cases of Covid-19 infection in that country. Since February 13, Vietnam has not recorded new cases. Once again, this small country has demonstrated the strength and talent in Medical field as well as the serious attitude of the people in their willingness to isolate and protect themselves.

Choose an option ( \(A, B, C\) or \(D)\) that best answers each question.

The tone of the passage could be best described as \(\qquad\) .