Bytheyearof2053therewillbe487millionagedpeopleinChina，...

問題詳情：

 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

知識點：定語從句

題型：選擇題