Sometimes customers can't help _____ the things they don't really need.    [ ]

A. persuading to buy        

B. to be persuaded into buying   

C. being persuaded to buy    

D. to persuade into buying

下图为“一年中某段时间晨线与昏线交点的运动轨迹”图，读图回答下列各题。

当交点从②移向④期间，下列现象可确定的是（）

A.北半球各地白昼变短

B.漳州的昼夜长短差异不断增大

C.南半球各地白昼变长

D.漳州的正午太阳高度不断增大