15. To prevent the spread of the Ebola virus from West Africa to the rest of the world, many airports
have begun Ebola ______ for passengers from the infected areas.
(A) screenings (B) listings (C) clippings (D) blockings
15. To prevent防止the spread of 傳播the Ebola virus from West Africa to the rest of 其他the world, many airports have begun 開始了Ebola ______ for passengers from the infected areas.