听力原文：（With) Other viruses, such as smallpox and measles, and polioneuromere, the major

听力原文：(With) Other viruses, such as smallpox and measles, and polioneuromere, the majority of people mount an immune response even if they never been vaccinated that clears the natural infection. With H1V, there are virtually no incidents of a person who has completely cleared the virus from their body, which means that although some people can control the virus better than others, the body is having trouble making a protective immune response.

What is the point the speaker is trying to make about HIV virus？

A．HIV vaccines trigger an immune response, but that response has proven inadequate.

B．The body's natural immune response to HIV infection could eradicate the virus.

C．The majority of people could mount an immune response even without being vaccinated that clears the natural infection from every virus.

D．Some people can control HIV virus better than others and make a protective immune response.