单项选择题

The application of infrared scanning technolgy to agriculture met with some difficulties due to （）

A．the lack of official support
B．its high cost
C．its failure to help increase production
D．the lack of financial support

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单项选择题

Infrared scanning technology may be brought back into operation because of（）

A．growing concern about the excessive use of pesticides on crops
B．the desire of farmers to improve the quality of their produce
C．the forceful promotion by the Department of Agriculture
D．full support from agricultural experts

单项选择题

Which of the following best characterizes the main feature of the nursing system at Beth Israel Hospital （）

A．The doctor gets more active professional support from the primary nurse.
B．Each patient is taken care of by a primary nurse day and night.
C．The primary nurse writes care plans for every patient.
D．The primary nurse keeps records of the patient's health conditions every day.