槽后脊前，上升运动，阴雨天气；（），下沉运动，晴朗天气。
参考答案：槽前脊后
We must do something to stop people from _____.[ ]
A. to throw litter about
B. to throw litter into
C. throwing litter about
D. throwing litter into
绿卡通主卡如遗失或被盗，应及时办理挂失手续。挂失手续办妥，挂失（）生效。
A.次日
B.当天
C.即时
D.三天后
