Which of  the two cameras are you going to buy?

—I’ll buy      of them，so I can give one to my friend．

A．all

B．both

C．neither

D．either

温室花卉冬季养护的工作重点是（）

A、浇水施肥

B、保温防寒

C、病虫害防治

D、中耕除草