He has bought two pens, but ________ writes well.[ ]

A. none of which

B. neither of which

C. none of them

D. neither of them

以下哪条措施对建筑物的夏季防热不利

A．外墙面浅色粉刷
B．屋顶大面积绿化
C．窗户上设遮阳装置
D．增大窗墙面积比