16. Paragraph➊17. Paragraph❷18. Paragraph❸19. Paragraph❹20. Paragraph❺ A. Main Results of Recent ResearchesB. Difference between Genetic and Observed IntelligenceC. Effect of Environment on IntelligenceD. Intelligence and AchievementE. Impact on School EducationF. A Changed View of Intelligence
According to the passage, in operating airlines it is essential to.()
A、keep in mind the need. of the executives only
B、satisfy the need of the low fare passengers at the expense of theexecutives
C、try to attract as many passengers as possible by reducing fares
D、cater to the need of passengers setting at both ends of the jets
We know for sure that colonization began at the end of the 15thcentury.( )