单项选择题
A．The fierce competition in the market. B．The growing necessity of staff training. C．The accelerated pace of globalisation. D．The urgent need of a diverse workforce.
A．She taught chemistry and microbiology courses in a college. B．She gave lectures on how to become a public speaker. C． She helped families move away from industrial polluters. D．She engaged in field research on environmental pollution.
A．The lack of overall urban planning. B．The huge gap between the haves and have-nots. C．The inadequate supply of water and electricity. D．The shortage of hi-tech personnel.