单项选择题


Questions 5 to 8 are based on the following passage.
Why did the bus hostess go to another bus

A．To compare experience with the hostess on that bus.
B．To get some orders.
C．To find if there were some vacant seats.
D．To fetch some more egg-salad sandwiches.
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单项选择题
Where did they first meet
A．At a ranch.
B．At school.
C．At a party.
D．At a dance.
单项选择题
In order to apply pesticide spraying precisely, we can use infrared scanning to ______ .
A．estimate the damage to the crops
B．draw a color-coded map
C．measure the size of the affected area
D．locate the problem area
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