Bytheyearof2053therewillbe487millionagedpeopleinChina，...

问题详情：

 By the year of 2053 there will be 487 million aged people in China，       means that one third of the population will be over 60

A. that   B. which      D. where

【回答】

B

知识点：定语从句

题型：选择题