The following are all mentioned as reasons why the airlines arehaving a hard time EXCEPT that .( )
A、the tourist industry is experiencing an all-time low
B、there is no increase in the number of passengers
C、there are more seats on the planes than needed
D、the competition between airlines is strong
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
16. Paragraph?17. Paragraph?18. Paragraph?19. Paragraph?20. Paragraph? 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