A team of American scientists has found a treatment to protect humans from the deadly H5N1 flu virus, ________ brings great ________ to the world.

A．that; appearance

B．which; relief

C．which; advantage

D．that; profit

1993年6月，第五次（）教育学术交流会在太原工业大学召开。

A.中美

B.中英

C.中法

D.中日