农业推广方法效果评价的尺度应是（）
A.推广目标的实现程度
B.改变农民行为的程度
C.推广成效率
D.推广对象经济效益
参考答案：B
Nowadays more and more people are advised to arrange for insurance _______ they or their family members need medical treatment.
A so that B. in order that
C in case D no wonder that
防止噪声污染的最根本的措施是（）。
A．从声源上降低噪声
B．采用隔声装置
C．严格控制人为噪声
D．对接收者进行防护
