单项选择题

In order to apply pesticide spraying precisely, we can use infrared scanning to （）

A．locate the problem areas
B．drew a color-coded map
C．measure the size of the affected area
D．estimate the damage to the crops

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单项选择题
The expression make the most of in Line 4 is closest in meaning to which of the following（）

A．Get the best yield from.
B．Raise the price of.
C．Exaggerate the worth of.
D．Earn a living on.
单项选择题
23（）

A．expense
B．tuition
C．pay
D．fine
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