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
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
There is not much the airlines can do when it comes to().
A、making sure. the departures are not delayed
B、the efficient handing procedure
C、speeding up customs procedure
D、the improvement of the condition of waiting lounges