A.牙髓炎会发生剧烈的自发痛、夜间痛
B.牙龈炎晚期会在刷牙或咬硬物时出现牙龈出血
C.口腔溃疡伴有患处触碰引发疼痛的感觉
D.龋病常表现为遇冷热刺激不适、咬物不适或疼痛
The fifth paragraph is mainly about ______.
A.the results of an AIDS infection
B.the possible symptoms of an AIDS infection
C.how the AIDS virus is spread
D.the diseases AIDS patients easily have
From para.4 we may draw the conclusion that______.
A.people living with HIV/AIDS are good advocates and communicators and they are very successful
B.the voice of people living with HIV/AIDS is too weak to be heard
C.the effective way to deal with HIV/AIDS is the full involvement of people living with HIV/AIDS and all of the communities
D.people living with HIV/AIDS had only one way to go, that is death