TOEFL Reading: ETS-TOEFL阅读机经 - 1Y3HW7S404YT0X0TL$

According to paragraph 4, all of the following were true of some people in northern Chile around 1000 B.C. EXCEPT: A. They were divers. B. They chewed coca leaves. C. They had dental problems caused by eating food from marine resources. D. They ate plants grown on land.