下面的CAS区信息分级的描述正确的是？
A、红色警告
B、琥珀色告诫
C、蓝色提示
D、以上都是正确的
参考答案：D
David likes country life and has decided to ______ farming. [ ]
A. go in for
B. go back on
C. go through with
D. go along with
油水接触面
