题目内容
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 doubledB.will be doubled
C.will have doubledD.will double
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题目内容
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 doubledB.will be doubled
C.will have doubledD.will double