四六级

　　听力水平的提高离不开多听多练，以下是文都网校小编为大家准备的一些英语六级听力练习题，希望对大家的备考有帮助。

点此下载六级听力练习.mp3

　　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.

　　原文与解析：

　　Patients with HIV often develop shortages of vitamins in the body. Researchers examined whether giving these patients a multivitamin with a mineral supplement helps to improve the body's natural defenses in fighting disease.

　　For 30 years, AIDS has been a major health problem in some African countries south of the Sahara Desert. (13) In Botswana, one of every four adults is infected with HIV. Yet the country also has aggressive AIDS, prevention campaigns. That is why Professor Marianna Baum decided to carry out her research on HIV and vitamins there.

　　Professor Baum studied almost 900 newly infected adults in Botswana who had not yet been given anti-AIDS drugs that target HIV. The adults were divided into groups. Each group got different combinations of vitamins B, C, E, and the mineral selenium, or a placebo.

　　Most patients with HIV do not have enough vitamins. (14) Profess Baum says she thought the multivitamins by themselves or the mineral selenium by itself would help strengthen the immune system. She was wrong.

　　(14) "We were surprised to find that only the combination was effective." Studies show that when people with HIV begin taking anti-retroviral drugs shortly after infection, they can stay healthy and are less likely to pass the virus to their sexual partners. But many patients do not have enough money to pay for treatment.

　　Professor Baum says the vitamin and mineral therapy combination should help people in low-income countries better control the virus.

　　"A simple multivitamin supplementation with selenium provided early in HIV disease can actually slow the HIV disease progression, and it should be provided very early in HIV infection."

　　(15) She says the vitamin therapy should not replace anti-retroviral drugs, but it can help people who cannot get those medicines.

　　13. Why did Professor Marianna Baum decide to carry out her research in Botswana?

　　14. What did Professor Marianna Baum find out about vitamins and HIV?

　　15. According to Professor Marianna Baum, what do we know about the vitamin therapy?

　　【小题13】短文提到 Botswana 时，介绍那里每四个成年人就有一个是艾滋病毒携带者，然而该国也有积极有力的艾滋病预防项目。选项 C 符合原文，故选 C。

　　【小题14】短文中提到，Baum 教授说她原来认为多种维生素或是砸自身都能增强免疫力，但是她错了。下文继续强调只有多种维生素和矿物质的组合才有效，故选 A。

　　【小题15】短文最后转述了 Baum 教授的观点，维生素疗法不能替代抗逆转录病毒药物，却能帮助那些无法得到这些药物的病人。选项 D 符合原文，故选 D。

以上就是今天的英语六级听力练习题目，希望对大家有帮助。