II.　　
        Have you heard about AIDS, 　35.　 is one of the world’s worst health problems? When AIDS was first reported in the USA in 1981, very 　36.　 was known about it. There was not even a name for it. No one knew how people got it or how they could fight it. People just kept dying of it. The world was 　37.　 scared of AIDS 　37.　 wrong ideas about AIDS were passed around. Some believed they would catch AIDS by just being around people with it. Some even believed AIDS would bring the end of the world.　　However, 　38.　 they were worried about did not come true. In 1995, David Ho, a Taiwanese American, found a way to help fight AIDS. Since then, the number of people 　39.　 has dropped greatly because there are stronger medicines to help them live longer. Today, there is still no easy answer to AIDS, but at least we know more about it. Now it is with experience, not with fear, that we can fight it.
【題組】35.
(A)who　
(B)what　
(C)that　
(D)which