The third reason for AIDS education is _________.
A. to reduce the fear of HIV and AIDS
B. to bring down the death rate of AIDS
C. to prevent the spread of HIV
D. to protect HIV-positive people or AIDS patients
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The purpose of the passage is _________.
A. to explain why we should overcome the fear of AIDS
B. to criticize schools for neglecting AIDS education
C. to prove that the danger of AIDS has been overstated (夸大)
D. to give the reasons for AIDS education
肋膈隐窝由哪些结构返折形成 (1分)
A. 肋胸膜和膈胸膜
B. 肋胸膜和纵隔胸膜
C. 纵隔胸膜和膈胸膜
D. 肋胸膜和胸膜顶
E. 膈胸膜和脏胸膜
下列关于胸腺区的描述,正确的是 (1分)
A. 在胸骨体的后方
B. 呈倒三角形
C. 成人胸腺区较宽
D. 儿童胸腺区有胸腺遗迹
E. 前方有胸膜遮盖
下列结构中,不属于后纵隔内的是 (1分)
A. 食管
B. 升主动脉
C. 奇静脉
D. 交感干
E. 胸导管