单项选择题

Farmers can save a considerable amount of pesticide by ______.

A．resorting to spot-spraying
B．consulting infrared scanning experts
C．transforming poisoned rain
D．detecting crop problems a[ an early date
<上一题 目录 下一题>
热门 试题

单项选择题
Plants will emit an increased amount of heat when they are ______.
A．sprayed with pesticides
B．facing an infrared scanner
C．in poor physical condition
D．exposed to excessive sun rays
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
相关试题