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Questions 13 to 15 are based on the passage you have just heard.
13
A.20% adults are infected with HIV in Botswana.
B.There aren't aggressive AIDS prevention campaigns.
C.Botswana's HIV infected rate still remains high.
D.People in Botswana suffer from shortages of vitamins.
14
A.The combination of vitamin and mineral can help patients with HIV.
B.The multivitamins would help strengthen the immune system.
C.Vitamins help the body absorb mineral and keep it healthy.
D.HIV weakens the body's natural defenses for fighting disease.
15
A.It is free of charge to the people with low income.
B.It changes HIV infection in the long run.
C.It slows rapidly the HIV disease progression.
D.It can't take the place of anti-retroviral drugs.
