2. 外语
  3. About half of the infant and maternal deaths in developing countries could be avoided if women had【M1】______ used family plannin

About half of the infant and maternal deaths in developing countries could be avoided if women had【M1】______ used family plannin

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问题    About half of the infant and maternal deaths in
developing countries could be avoided if women had【M1】______
used family planning methods to prevent high risk
pregnancies,  according to a report publishing【M2】______
recently by the Johns Hopking University.
   The report indicates that 5.6 million infant
deaths and 2,000,000 maternal deaths could be
prevented this year if women chose to have theirs 【M3】______
children within the safest years with adequate inter
vals among births and limited their families to mode【M4】______
rate size.
   This amounts to about half of the 9.8 million
infant and 370,000 maternal deaths in developing
countries, excluded China, estimated for this year【M5】______
by the United Nations’ Children’s Fund and the US
Centers for Disease Control respectably. China was【M6】______
excluded because very few births occur in tile high
risk categories.
   The report says that evidences from around the 【M7】______
world shows the risk of maternal or infant ill and 【M8】______
death is the highest in four specific types of pregnancy
pregnancies before the mother is 18 year old; 【M9】______
those after the mother is 35 years old; pregnancies
after four births; and those lesser than two years【M10】______
apart.
【M1】
选项
答案将had used改为used。
解析 因为此句是虚拟语气，表示与现在事实相反，故条件从句中应使用一般过去时，例如：Many would be wise if they did not think themselves wise．许多人原本会成为聪明人——如果他们不自以为聪明。
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