Which country is Bob from

A．only terminally ill patients can have euthanasia.
B．if anyone who rationally decides to end his life, he can have euthanasia.
C．people should respect for life.
D．no matter what punishment they get, they’ll carry out euthanasia to patients.

A．R’s one branch of linguistics.
B．It helps teachers to decide the content of teaching.
C．It’s not useful to foreign language learning.
D．It makes the results of linguistics theories more practical.