英语专业八级改错练习题及答案解析(一)About half of the infant and maternal deaths in developing countries couldbe avoided if women had used family planning methods to prevent high risk _1_pregnancies, according to a report publishing recently by the Johns Hopking _2_University.The report indicates that 5.6 million infant deaths and 2,000,000 maternalDeaths could be prevented this year if women chose to have theirs children _3_within the safest years with adequate intervals among bi