拓展模块U9 Health and Diseases 课文2 只读版 ~ AIDS 艾滋病

拓展模块Unit 9 课文2 只读版

AIDS 艾滋病

1 Several months ago, I visited a friend who was hospitalized with AIDS.I asked the doctor whether I needed to take any precautions.“You’re more of a risk to him than he is to you,” said the doctor.“You might have a cold or some infection. That would be very serious for him,because he has no resistance.”The risk to me, the doctor said, was almost none.

2 AIDS is the plague of the 20th century.It is a disease caused by a virus – HIV.Within one to three weeks after infection with HIV,most people experience flu-like symptoms,such as fever,sore throat,headache, skin rash,and a feeling of discomfort.These symptoms last one to four weeks.During this period,HIV reproduces rapidly in the blood.The virus circulates in the blood throughout the body.HIV destroys that person's immune system,leaving him with no ability to fight off germs and viruses. Gradually,the person will become very weak, get infected and die.

3AIDS can be spread in many ways.It is transmitted mainly through the following ways: sexual contacts, infected blood transfusions,and sharing of infected needles among drug users.You don't have to worry when you are with an AIDS patient or an HIV carrier because AIDS is not transmitted through hand-shaking and breathing.

4Scientists worldwide have been trying to develop a drug to kill HIV.Until now,they have not yet found a solution.But AIDS can be prevented.Therefore it is of vital importance to educate people, especially young people on AIDS prevention.

5 One of the most prevalent myths about HIV transmission is that mosquitoes or other bloodsucking insects, can infect you.There is no scientific evidence to support this claim.To understand why a mosquito does not aid in the transmission of HIV,let us look at the insect’s biting behavior.

6 When a mosquito bites someone, it does not inject its own blood or the blood of a previously bitten animal or person into the next person it bites.The mosquito does however inject its saliva, which acts as a lubricant so that it can feed more effectively.Yellow fever and malaria are transmitted in this way,but HIV does not reproduce in insects, so the virus will not survive in the mosquito long enough to be transmitted through its saliva.In addition, a mosquito does not normally travel from one person to another after ingesting blood.It needs time to digest its blood meal before moving on.

拓展模块Unit 9 课文2 只读版AIDS艾滋病

1几个月前，我去看望一个丈滋病住院的朋友。我问医生我是否需要采取预防措施。“你对他的危险要远大于他对你。”医生说，“你可能感冒或有感染。那对他会是非常危险的，因为他没有免疫力。”对我的危险，医生说，几乎没有。

2艾滋病是20世纪的瘟疫。它是由一种病毒   HIV引起的。在感染HIV后的一到三个星期内，大多数人会经历类似流感的症状，例如发烧、咽喉疼痛、头疼、出现皮疹和不舒适感。这些症状持续一到四周。在此期间，HIV在血液中迅速再生。病毒在血液中循环，传遍周身。

3 HIV摧毁那人的免疫系统，使其没有能力抵抗细菌和病毒。这个人就会慢慢地变得很虚弱，感染疾病而死亡。

4艾滋病能通过多种方式传播。它的传染主要通过以下方式：性接触、输血感染和在毒品使用者之间共用被感染的针头。当你和一个艾滋病患者或HIV携带者在一起时，你不必担心，因为艾滋病不会通过握手和呼吸传染。

5全世界的科学家都在试图开发杀死HIV的药物。直到现在，他们仍未找到解决的办法。但是艾滋病可以预防。所以，至关重要的是教育人们特别是年轻人有关艾滋病的预防。

6有关HIV传染的最普遍的荒诞说法之一是蚊子或其他吸血昆虫会传染你并没有科学证据支持这一说法。要了解为什么蚊子不会帮助传输HIV病毒，先让我们看看这种昆虫的叮咬行为。

7当蚊子叮咬某人，它不会把自己的血液或它先前叮咬的动物或人的血液注入下一个被叮咬者的体内。然而，蚊子确会注入它的唾液，唾液起润滑作用以便它能更有效地进食。黄热病和疟疾就是通过这种方式被传染的，但是HIV不在昆虫体内再生，所以这种病毒不会在蚊子的体内存活到足以通过唾液传染的程度。此外，蚊子在吞下血液之后通常不会从一个人转移到另一个人。在它继续进食前，它需要时间来消化它的血液食物。