CROWDING THE PLANET This chart shows how much the world’s population grew between 1900 and 2000, and how much experts believe

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问题                     CROWDING THE PLANET
   This chart shows how much the world’s population grew between 1900 and 2000, and how much experts believe it will grow by 2025. The numbers are in billions.

What was the world population in 1950?

选项 A、Half a billion
B、2 billion
C、2.5 billion
D、5 billion

答案C

解析 The world population in 1950 was 2.5 billion. Choice (A) confuses half a billion and 2.5 billion. Choice (B) was the population in 1925. Choice (D) confuses 5 billion and 2.5 billion.  
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