单项选择题

Agricultural pests are______.

A．rapidly being destroyed by chemical poisons
B．killed by pesticides
C．dangerous to farmers, scientists, and food planners
D．bec0ming used to poisons
<上一题 目录 下一题>
热门 试题

单项选择题
IPM is a plan that______.
A．uses the pests' natural enemies
B．controls the pests' breeding environment
C．develops stronger strains of seeds
D．does all of the above
单项选择题
IPM is different from the older methods because______.
A．chemical poisons are only used when necessary
B．chemical poisons are used very often
C．pests are completely destroyed
D．farmers do not have to worry about pests
相关试题