rded in 1981,according to __6__unaids report released(发布)on november 24.
hiv/aids has killed 25 million people in the world __7__new infections are slowing sharply due to __8__(prevent)programs.
hiv/aids can be transmitted(传播)through sexual contact,or by sharing needles with an hivpositive drug user,or from an hivpositive woman to __9__child before or during birth or through breastfeeding(母乳喂养)__10__birth.hiv also can be transmitted through receipt(接受)of infected blood.
【解题导语】 中国艾滋病感染者和病人达74万,病毒传播势头得到遏制。
1.解析:one的序数词用first,表示“第一例艾滋病阳性病例”。
答案:first
2.解析:考过去完成时的被动语态,动作发生在announced之前。
答案:had been recorded
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