Multiple Choice
In the 2000 years before 1900, life expectancy increased by about _____years. In the 70 years between 1900 and 1970, life expectancy increased by about _____years.
A) 28; 23
B) 23; 28
C) 36; 5
D) 5; 36
Correct Answer:

Verified
Correct Answer:
Verified
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