【題目】The 2013 population investigation shows one in four people in Jiangsu will be over 65 and the number of over-85 people ________ by 2030．

A. have doubled B. will be doubled

C. will have doubled D. will double

【答案】C

【解析】2013年人口調(diào)查表明在江蘇省四分之一的人超過了65歲，并且到2032年年齡超過85歲的人的數(shù)量會翻倍。根據(jù)時間狀語by 2030可知，應用將來完成時。

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