My brother        a test next month. He's revising for it now.   [ ]

A. has                      

B. is having  

C. is going to have      

D. are having

北极地区（　　）

A．纬度很高，接近北极圈

B．北极圈横贯中部

C．几乎全在北极圈内

D．几乎全在北极点附近