Coronaviruses were discovered in the 1960s. They are a group of 56 that cause diseases in __57__ and birds. Inhumans, coronaviruses cause__ 58__ tract infections that are typically mild, such as the common cold.         The name "coronavirus" is__ 59__ from the Latin corona, meaning crown or halo. The name refers to the characteristicappearance of the infective form of the virus, which is__ 60__ of a crown or a solar corona.                    At the end of 2019, a new type of coronavirus started 61 in China. This type of coronavirus is often called 2019-nCoV, __62__ coronavirus, or COVID-19. It is believed that the virus was__ 63__ from animals to humans. Some of the first cases were64 in people who had visited a market selling live seafood and animals. Unfortunately, when viruses are transmitted fromanimals to people, it can take scientists a lot of time before they can develop a vaccine or medicines to cure __65__ .
【題組】56.
(A) virtues
(B) vision
(C) visual
(D) viruses