题目内容
China's populaion is expected to increase to about 1.5 billion in 2040, ________ it will start to decline slowly.
A.after that
B.since when
C.on which
D.after which
解析:
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本题考查“介词+关系代词"结构的用法。从句部分还原为:China's population will start to decline slowly after 2040.由此可知,答案为D。 |
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