单项选择题
A.It has a very long history. B.It is a private institution. C.It was founded by Thomas Jefferson. D.It stresses the comprehensive study of nature.
A.To investigate the causes of AIDS. B.To raise money for AIDS patients. C.To rally support for AIDS victims in Africa. D.To draw attention to the spread of AIDS in Asia.
A.He was ready to make a concession. B.He was not prepared m go to court. C.He was not intimidated. D.He was a bit concerned.