单项选择题

A．Crowded air traffic.
B．The large size of airplanes.
C．Mistakes made by air traffic controllers.
D．Bad weather.
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单项选择题
A．He is in bad mood.B．He doesn’t feel good.C．On his doctor’s suggestion.D．He is not healthy.
A．He is in bad mood.
B．He doesn’t feel good.
C．On his doctor’s suggestion.
D．He is not healthy.
单项选择题
A．To help international students prepare to enter institutions of higher learning.B．To teach students how to use English in their daily lives and at work,C．To provide work opportunities for graduating students in the community.D．To provide learning opportunities for this area’s community.
A．To help international students prepare to enter institutions of higher learning.
B．To teach students how to use English in their daily lives and at work,
C．To provide work opportunities for graduating students in the community.
D．To provide learning opportunities for this area’s community.
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