2. 外语
  3. By 2003 an estimated 42 million people were infected【S1】______and more than 20 million people had died of AIDS. A United Nation

By 2003 an estimated 42 million people were infected【S1】______and more than 20 million people had died of AIDS. A United Nation

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问题     By 2003 an estimated 42 million people were infected【S1】______and more than 20 million people had died of AIDS.  A United Nations report presented in 2002【S2】______that unless prevention programs were greatly expanded, AIDS would claim an【S3】______68 million lives by 2020. Sub Saharan Africa has been the region hardest hit by the HIV/AIDS pandemic; more than two-thirds of all people with HIV/AIDS are in this region. In the United States, an【S4】______900,000 people were living with HIV/AIDS in 2002.
    HIV is spread through contact with【S5】______body fluids such as blood and semen. Infected people may harbor the virus within their bodies for several years or even longer before developing symptoms of AIDS. Though symptomless, they can still infect others. Worldwide, most HIV【S6】______occurs during sexual relations between heterosexual partners. In the United States, the majority of transmission has been between homosexual partners. Transmission among drug addicts who【S7】______infected needles is another significant route of transmission in many countries.
    No cure for AIDS is known Researchers are working on preventative AIDS【S8】______, but none are expected to be ready for market in the near future. Meanwhile, drug therapies introduced in the mld-1990’s have been extremely effective in controlling AIDS【S9】______for some patients. However, the medications are expensive, putting them beyond the reach of the【S10】______majority of the world’s HIV-positive people.

A) estimated         B) transmission           C) novel               D) additional  
E) vast              F) peculiar               G) infected            H) vaccines
I) remarkable        J) predicted              K) restore             L) commit
M) share             N) progression            O) worldwide
【S1】
选项
答案O
解析 根据文章结构，此处应填一个副词，所给选项中只有world wide既可作形容词又可作副词。根据文意，到2003年为止，全世界估计有四千二百万人感染艾滋病，并已有二千多万人死于艾滋病。故选O)。
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大学英语四级

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