2. 外语
  3. Every year, malaria(疟疾)【S1】______about five hundred million people. More than one million of them die, mostly young children and

Every year, malaria(疟疾)【S1】______about five hundred million people. More than one million of them die, mostly young children and

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问题     Every year, malaria(疟疾)【S1】______about five hundred million people. More than one million of them die, mostly young children and pregnant women in Africa. For several years in sub-Saharan Africa, the Global Fund and other groups have been【S2】______for bed nets treated with long-lasting insect poison. Malaria is【S3】______by mosquito bites. The groups have also invested in anti--malaria drugs for A. C. T. , artemisinin-based combination therapy(青蒿素的组合疗法).
    Recently, a team from the World Health organization visited Ethiopia(埃塞俄比亚), Ghana(加纳), Rwanda(卢旺达)and Zambia(赞比亚). These countries were the first to【S4】______the bed nets and medicine. The Global Fund to Fight AIDS, Tuberculosis(结核)and Malaria requested a study to see if the interventions were【S5】______.
    The researchers found that the answer is yes. They looked at records of children【S6】______five. They found that malaria deaths fell【S7】______sixty-six percent in Rwanda between two thousand five and two thousand seven. Deaths fell by fifty-one percent in Ethiopia, thirty-four percent in Ghana and thirty-three percent in Zambia.
    The team reported that limited supplies of bed nets could help【S8】______the more limited【S9】______in Zambia and Ghana. But the findings in Ghana were more difficult to explain, because deaths from causes other than malaria fell more【S10】______.

    A)by           I)distribute
    B)mostly       J)in
    C)sickens      K)spread
    D)paying       L)effects
    E)explain      M)over
    F)receiving    N)under
    G)helping      O)causes
    H)sharply
【S8】
选项
答案E
解析 help后接动词原形或不定式，此处显然用动词原形。动词除用过的只剩余explain，结合55题，本句话是说该小组的报告指出有限的蚊帐供应可以解释在赞比亚和加纳效果有限的原因，此外，下句还有 explain呼应。
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大学英语四级

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