The first attempt made by European people to settle down permanently in North America occurred in the 1580s.(  )

• A、Right
• B、Wrong
• C、Not mentioned

We know for sure that colonization began at the end of the 15^th century.(  )

• A、Right

• B、Wrong

• C、Not mentioned

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A. Main Results of Recent Researches

B. Difference between Genetic and Observed Intelligence

C. Effect of Environment on Intelligence

D. Intelligence and Achievement

E. Impact on School Education

F. A Changed View of Intelligence