单选题 _______countries are now at risk of not achieving education for all on the basis of completion rates.

【正确答案】 D

【答案解析】细节理解题。文章的第三段提到“The number rises to 88 if completion rates are used as the criterion．”表明D项是答案。A项是比较具有迷惑性的答案。32个国家是按照以前的标准计算，而不是按照新的标准。