China's population is expected to increase to about 1.5 billion in 2040, ______it will start to

题目简介

China's population is expected to increase to about 1.5 billion in 2040, ______it will start to

题目详情

China's population is expected to increase to about 1.5 billion in 2040, ______it will start to decline slowly.
A.whereB.whichC.on whichD.after which
题型:单选题难度:偏易来源:不详

答案

D

试题分析:考查非限制性定语从句。句中有逗号,说明是非限制性定语从句,先行词是2040,指时间,排除A;on when相当于when,但on指具体的一天,这里的2040年是一段时间,排除C;which作主语或宾语,it will start to decline slowly不缺少成分,排除B,after which相当于after 2040,故选D。

更多内容推荐