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n. 病毒，病原体
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Work Book Unit 7 Listening
Ken is learning about HIV/AIDS in school.
His teacher has asked him to interview a doctor at a local hospital
and write a report about basic HIV/AIDS facts.
Listen to the interview and help Ken prepare the report.
Part One A:Hello,Dr Wards.
Thank you for letting me interview you.
B:You are welcome.Now,what would you like to know?
A:Well,my first question is about the name of the disease.
What does AIDS stand for?
B:When we talk about AIDS,we often use the term HIV/AIDS.
HIV is the virus that causes AIDS.
AIDS stands for Acquired Immune Deficiency Syndrome.
A:Acquired Immune Deficiency Syndrome?
OK,got it.But I'm not sure I understand what it means.
B:Well,to acquire something is to get something,
so acquired means that you can get infected with the disease,
Immune comes from Immune system,
the system that protects your body from diseases.
A:So Acquired Immune
tells us that this is the disease that we can get from other people.
And that it has something to do with our immune system.
What exactly does AIDS do to our immune system?
B:That's what the next word tells us.
If something is deficient,it means that it isn't functioning probably.
It isn't working in the way it should.
So Acquired Immune Deficiency
means that even though we were born with a good immune system
we have now got the disease that breaks down the immune system.
A:Wow,that's terrible.
So what happens when someone's immune system doesn't work?
B:Well,to put it simply,he or she gets sick lot.
The last word in AIDS 'Syndrome',
means all the bad things that happen to your body,
when the immune system doesn't work.
Part Two People who die of AIDS actually don't 'die' of AIDS.
When a person infected with HIV develops AID.
She or she easily gets sick.
A person with AIDS has a very weak immune system.
Many common diseases can be cured in patients whose immune system functions well.
But when they enter the body of a person with AIDS,they can kill him or her.
Many AIDS patients die of infections or serious colds.
But there are also many diseases that we have never heard of.
If your immune system is working,they may not be able to any harm.
But because the immune system has been weakened the disease can't be cured.
They will grow stronger and stronger
until one day they kill the patient with AIDS.
Therefore,much of the treatments AIDS patients receives
is means to help the body defend itself against diseases.
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