The cousins are alike in age, but        they are as different as day and night.

A．anyhow

B．besides

C．otherwise

D．moreover

关于农田防护林网规划布置说法不正确的选项是（）

A.主林带方向应尽量与主害风垂直，偏离角也不超过30°

B.主林带的间距主要取决于林带的有效防风距离

C.副林带主要防止次要害风，尽量与主林带垂直

D.副林带的间距一般比主林带的间距小