Among the following options, the correct descriptions of the lifecycle in Trichinella spiralis are（）

A.Direct development

B.It has an exogenous stage

C.Adult worms parasitize in the host’s intestines

D.Larvae parasitize in the striated muscle of hosts

正确答案：Direct development；Adult worms parasitize in the host’s intestines；Larvae parasitize in the striated muscle of hosts